algorithms Learn About Social Media Algorithms, Augmented Reality and More Changing Business Trends By www.small-business-software.net Published On :: Fri, 27 Oct 2017 21:09:00 -0400 The tools, platforms and methods you use to grow your business are constantly changing. So you need to keep up with all the latest updates and trends. Members of the online small business community have some great insights about these changing tools and trends, ranging from social media algorithms to augmented reality. Read on for some helpful tips. complete article Full Article
algorithms Nondeterministic Query Algorithms By www.jucs.org Published On :: 2011-07-04T16:04:43+02:00 Query algorithms are used to compute Boolean functions. The definition of the function is known, but input is hidden in a black box. The aim is to compute the function value using as few queries to the black box as possible. As in other computational models, different kinds of query algorithms are possible: deterministic, probabilistic, as well as nondeterministic. In this paper, we present a new alternative definition of nondeterministic query algorithms and study algorithm complexity in this model. We demonstrate the power of our model with an example of computing the Fano plane Boolean function. We show that for this function the difference between deterministic and nondeterministic query complexity is 7N versus O(3N). Full Article
algorithms Algorithms for the Evaluation of Ontologies for Extended Error Taxonomy and their Application on Large Ontologies By www.jucs.org Published On :: 2011-07-20T10:20:31+02:00 Ontology evaluation is an integral and important part of the ontology development process. Errors in ontologies could be catastrophic for the information system based on those ontologies. As per our experiments, the existing ontology evaluation systems were unable to detect many errors (like, circulatory error in class and property hierarchy, common class and property in disjoint decomposition, redundancy of sub class and sub property, redundancy of disjoint relation and disjoint knowledge omission) as defined in the error taxonomy. We have formulated efficient algorithms for the evaluation of these and other errors as per the extended error taxonomy. These algorithms are implemented (named as OntEval) and the implementations are used to evaluate well-known ontologies including Gene Ontology (GO), WordNet Ontology and OntoSem. The ontologies are indexed using a variant of already proposed scheme Ontrel. A number of errors and warnings in these ontologies have been discovered using the OntEval. We have also reported the performance of our implementation, OntEval. Full Article
algorithms Algorithm Visualization System for Teaching Spatial Data Algorithms By Published On :: Full Article
algorithms Android malware analysis using multiple machine learning algorithms By www.inderscience.com Published On :: 2024-10-07T23:20:50-05:00 Currently, Android is a booming technology that has occupied the major parts of the market share. However, as Android is an open-source operating system there are possibilities of attacks on the users, there are various types of attacks but one of the most common attacks found was malware. Malware with machine learning (ML) techniques has proven as an impressive result and a useful method for malware detection. Here in this paper, we have focused on the analysis of malware attacks by collecting the dataset for the various types of malware and we trained the model with multiple ML and deep learning (DL) algorithms. We have gathered all the previous knowledge related to malware with its limitations. The machine learning algorithms were having various accuracy levels and the maximum accuracy observed is 99.68%. It also shows which type of algorithm is preferred depending on the dataset. The knowledge from this paper may also guide and act as a reference for future research related to malware detection. We intend to make use of Static Android Activity to analyse malware to mitigate security risks. Full Article
algorithms A New Typology Design of Performance Metrics to Measure Errors in Machine Learning Regression Algorithms By Published On :: 2019-01-24 Aim/Purpose: The aim of this study was to analyze various performance metrics and approaches to their classification. The main goal of the study was to develop a new typology that will help to advance knowledge of metrics and facilitate their use in machine learning regression algorithms Background: Performance metrics (error measures) are vital components of the evaluation frameworks in various fields. A performance metric can be defined as a logical and mathematical construct designed to measure how close are the actual results from what has been expected or predicted. A vast variety of performance metrics have been described in academic literature. The most commonly mentioned metrics in research studies are Mean Absolute Error (MAE), Root Mean Squared Error (RMSE), etc. Knowledge about metrics properties needs to be systematized to simplify the design and use of the metrics. Methodology: A qualitative study was conducted to achieve the objectives of identifying related peer-reviewed research studies, literature reviews, critical thinking and inductive reasoning. Contribution: The main contribution of this paper is in ordering knowledge of performance metrics and enhancing understanding of their structure and properties by proposing a new typology, generic primary metrics mathematical formula and a visualization chart Findings: Based on the analysis of the structure of numerous performance metrics, we proposed a framework of metrics which includes four (4) categories: primary metrics, extended metrics, composite metrics, and hybrid sets of metrics. The paper identified three (3) key components (dimensions) that determine the structure and properties of primary metrics: method of determining point distance, method of normalization, method of aggregation of point distances over a data set. For each component, implementation options have been identified. The suggested new typology has been shown to cover a total of over 40 commonly used primary metrics Recommendations for Practitioners: Presented findings can be used to facilitate teaching performance metrics to university students and expedite metrics selection and implementation processes for practitioners Recommendation for Researchers: By using the proposed typology, researchers can streamline development of new metrics with predetermined properties Impact on Society: The outcomes of this study could be used for improving evaluation results in machine learning regression, forecasting and prognostics with direct or indirect positive impacts on innovation and productivity in a societal sense Future Research: Future research is needed to examine the properties of the extended metrics, composite metrics, and hybrid sets of metrics. Empirical study of the metrics is needed using R Studio or Azure Machine Learning Studio, to find associations between the properties of primary metrics and their “numerical” behavior in a wide spectrum of data characteristics and business or research requirements Full Article
algorithms Unveiling the Secrets of Big Data Projects: Harnessing Machine Learning Algorithms and Maturity Domains to Predict Success By Published On :: 2024-08-19 Aim/Purpose: While existing literature has extensively explored factors influencing the success of big data projects and proposed big data maturity models, no study has harnessed machine learning to predict project success and identify the critical features contributing significantly to that success. The purpose of this paper is to offer fresh insights into the realm of big data projects by leveraging machine-learning algorithms. Background: Previously, we introduced the Global Big Data Maturity Model (GBDMM), which encompassed various domains inspired by the success factors of big data projects. In this paper, we transformed these maturity domains into a survey and collected feedback from 90 big data experts across the Middle East, Gulf, Africa, and Turkey regions regarding their own projects. This approach aims to gather firsthand insights from practitioners and experts in the field. Methodology: To analyze the feedback obtained from the survey, we applied several algorithms suitable for small datasets and categorical features. Our approach included cross-validation and feature selection techniques to mitigate overfitting and enhance model performance. Notably, the best-performing algorithms in our study were the Decision Tree (achieving an F1 score of 67%) and the Cat Boost classifier (also achieving an F1 score of 67%). Contribution: This research makes a significant contribution to the field of big data projects. By utilizing machine-learning techniques, we predict the success or failure of such projects and identify the key features that significantly contribute to their success. This provides companies with a valuable model for predicting their own big data project outcomes. Findings: Our analysis revealed that the domains of strategy and data have the most influential impact on the success of big data projects. Therefore, companies should prioritize these domains when undertaking such projects. Furthermore, we now have an initial model capable of predicting project success or failure, which can be invaluable for companies. Recommendations for Practitioners: Based on our findings, we recommend that practitioners concentrate on developing robust strategies and prioritize data management to enhance the outcomes of their big data projects. Additionally, practitioners can leverage machine-learning techniques to predict the success rate of these projects. Recommendation for Researchers: For further research in this field, we suggest exploring additional algorithms and techniques and refining existing models to enhance the accuracy and reliability of predicting the success of big data projects. Researchers may also investigate further into the interplay between strategy, data, and the success of such projects. Impact on Society: By improving the success rate of big data projects, our findings enable organizations to create more efficient and impactful data-driven solutions across various sectors. This, in turn, facilitates informed decision-making, effective resource allocation, improved operational efficiency, and overall performance enhancement. Future Research: In the future, gathering additional feedback from a broader range of big data experts will be valuable and help refine the prediction algorithm. Conducting longitudinal studies to analyze the long-term success and outcomes of Big Data projects would be beneficial. Furthermore, exploring the applicability of our model across different regions and industries will provide further insights into the field. Full Article
algorithms Negative performance feedback from algorithms or humans? effect of medical researchers’ algorithm aversion on scientific misconduct By ifp.nyu.edu Published On :: Mon, 04 Nov 2024 00:59:43 +0000 Institutions are increasingly employing algorithms to provide performance feedback to individuals by tracking productivity, conducting performance appraisals, and developing improvement plans, compared to trad… Read the full article › The post Negative performance feedback from algorithms or humans? effect of medical researchers’ algorithm aversion on scientific misconduct was curated by information for practice. Full Article Open Access Journal Articles
algorithms SIAN Design Generates Modern Fine Jewelry Using Algorithms By design-milk.com Published On :: Mon, 05 Aug 2024 16:00:27 +0000 Architects Antonia Frey-Vorhammer and Simon Vorhammer, of SIAN, design jewelry that mirrors their highly intricate + geometric projects. Full Article Main Style + Fashion Technology Antonia Frey-Vorhammer jewelry jewelry designer modern jewelry rings Sian Design Simon Vorhammer
algorithms Optimization of synchrotron radiation parameters using swarm intelligence and evolutionary algorithms By journals.iucr.org Published On :: 2024-02-22 Alignment of each optical element at a synchrotron beamline takes days, even weeks, for each experiment costing valuable beam time. Evolutionary algorithms (EAs), efficient heuristic search methods based on Darwinian evolution, can be utilized for multi-objective optimization problems in different application areas. In this study, the flux and spot size of a synchrotron beam are optimized for two different experimental setups including optical elements such as lenses and mirrors. Calculations were carried out with the X-ray Tracer beamline simulator using swarm intelligence (SI) algorithms and for comparison the same setups were optimized with EAs. The EAs and SI algorithms used in this study for two different experimental setups are the Genetic Algorithm (GA), Non-dominated Sorting Genetic Algorithm II (NSGA-II), Particle Swarm Optimization (PSO) and Artificial Bee Colony (ABC). While one of the algorithms optimizes the lens position, the other focuses on optimizing the focal distances of Kirkpatrick–Baez mirrors. First, mono-objective evolutionary algorithms were used and the spot size or flux values checked separately. After comparison of mono-objective algorithms, the multi-objective evolutionary algorithm NSGA-II was run for both objectives – minimum spot size and maximum flux. Every algorithm configuration was run several times for Monte Carlo simulations since these processes generate random solutions and the simulator also produces solutions that are stochastic. The results show that the PSO algorithm gives the best values over all setups. Full Article text
algorithms Investigation of fast and efficient lossless compression algorithms for macromolecular crystallography experiments By journals.iucr.org Published On :: 2024-06-05 Structural biology experiments benefit significantly from state-of-the-art synchrotron data collection. One can acquire macromolecular crystallography (MX) diffraction data on large-area photon-counting pixel-array detectors at framing rates exceeding 1000 frames per second, using 200 Gbps network connectivity, or higher when available. In extreme cases this represents a raw data throughput of about 25 GB s−1, which is nearly impossible to deliver at reasonable cost without compression. Our field has used lossless compression for decades to make such data collection manageable. Many MX beamlines are now fitted with DECTRIS Eiger detectors, all of which are delivered with optimized compression algorithms by default, and they perform well with current framing rates and typical diffraction data. However, better lossless compression algorithms have been developed and are now available to the research community. Here one of the latest and most promising lossless compression algorithms is investigated on a variety of diffraction data like those routinely acquired at state-of-the-art MX beamlines. Full Article text
algorithms Analysis of crystallographic phase retrieval using iterative projection algorithms By journals.iucr.org Published On :: 2024-10-23 For protein crystals in which more than two thirds of the volume is occupied by solvent, the featureless nature of the solvent region often generates a constraint that is powerful enough to allow direct phasing of X-ray diffraction data. Practical implementation relies on the use of iterative projection algorithms with good global convergence properties to solve the difficult nonconvex phase-retrieval problem. In this paper, some aspects of phase retrieval using iterative projection algorithms are systematically explored, where the diffraction data and density-value distributions in the protein and solvent regions provide the sole constraints. The analysis is based on the addition of random error to the phases of previously determined protein crystal structures, followed by evaluation of the ability to recover the correct phase set as the distance from the solution increases. The properties of the difference-map (DM), relaxed–reflect–reflect (RRR) and relaxed averaged alternating reflectors (RAAR) algorithms are compared. All of these algorithms prove to be effective for crystallographic phase retrieval, and the useful ranges of the adjustable parameter which controls their behavior are established. When these algorithms converge to the solution, the algorithm trajectory becomes stationary; however, the density function continues to fluctuate significantly around its mean position. It is shown that averaging over the algorithm trajectory in the stationary region, following convergence, improves the density estimate, with this procedure outperforming previous approaches for phase or density refinement. Full Article text
algorithms Review and experimental comparison of speckle-tracking algorithms for X-ray phase contrast imaging By journals.iucr.org Published On :: This review focuses on low-dose near-field X-ray speckle phase imaging in the differential mode introducing the existing algorithms with their specifications and comparing their performances under various experimental conditions. Full Article text
algorithms distect: automatic sample-position tracking for X-ray experiments using computer vision algorithms By journals.iucr.org Published On :: 2024-10-30 Soft X-ray spectroscopy is an important technique for measuring the fundamental properties of materials. However, for measurements of samples in the sub-millimetre range, many experimental setups show limitations. Position drifts on the order of hundreds of micrometres during thermal stabilization of the system can last for hours of expensive beam time. To compensate for drifts, sample tracking and feedback systems must be used. However, in complex sample environments where sample access is very limited, many existing solutions cannot be applied. In this work, we apply a robust computer vision algorithm to automatically track and readjust the sample position in the dozens of micrometres range. Our approach is applied in a complex sample environment, where the sample is in an ultra-high vacuum chamber, surrounded by cooled thermal shields to reach sample temperatures down to 2.5 K and in the center of a superconducting split coil. Our implementation allows sample-position tracking and adjustment in the vertical direction since this is the dimension where drifts occur during sample temperature change in our setup. The approach can be easily extended to 2D. The algorithm enables a factor of ten improvement in the overlap of a series of X-ray absorption spectra in a sample with a vertical size down to 70 µm. This solution can be used in a variety of experimental stations, where optical access is available and sample access by other means is reduced. Full Article text
algorithms Algorithms Won’t Solve All Your Pricing Problems By hbr.org Published On :: Tue, 19 Oct 2021 09:00:11 -0500 Marco Bertini, marketing professor at Esade Business School, says more and more companies are turning to pricing algorithms to maximize profits. But many are unaware of a big downside. The constant price shifts can hurt the perception of the brand and its products. He warns that overreliance on artificial intelligence and machine learning without considering human psychology can cause serious damage to the customer relationship. And he outlines steps managers should take, including implementing guardrails, overrides, and better communication tactics. With London Business School professor Oded Koenigsberg, Bertini wrote the HBR article "The Pitfalls of Pricing Algorithms." Full Article
algorithms CAST and LIRIS establish partnership to apply advanced graph visualization algorithms By www.kmworld.com Published On :: Tue, 09 Jul 2024 01:00:11 EST The goal of the collaboration is to develop advanced algorithms that yield more efficient and user-friendly visual representations of application structures Full Article
algorithms New Auphonic Website, Free Advanced Algorithms and More Examples By auphonic.com Published On :: Wed, 01 Mar 2023 10:30:19 +0000 To start a new decade of automatic audio post production with Auphonic, we are happy to launch a few updates: New Website Design Opening the new homepage today, you might have noticed that our website looked different from what you had been used to before. Keeping our customers’ feedback from last year in mind, we designed a new vision for Auphonic. Our new website features a refreshed look with an improved, more engaging, and functional user experience. Moreover, a more straightforward, intuitive, and accessible navigation will give you a seamless workflow and a comfortable exploration of Auphonic’s features. We hope it will be easier to explore the diversity of applications that Auphonic has. In the end, however, as before, you will have the same full functionality of Auphonic available to you and some extra features if you are using our paid packages or subscriptions. Take a look yourself: New Auphonic Landing Page Free Access to our Advanced and Beta Algorithms In the past, only paying Auphonic users had access to the advanced algorithm parameters, to multitrack advanced audio algorithms, and to our Dynamic Denoising and AutoEQ beta models. We now enabled all advanced algorithms for free users, and you can use them for 2 hours of audio free each month! Using the Dynamic Denoiser, you can define whether Auphonic should remove only static or also fast-changing noises and if we should keep or eliminate music. For even greater speech intelligibility control, it is possible to manually adjust the amount of denoising to strike the perfect balance between clarity and ambiance. The AutoEQ automatically analyzes and optimizes the frequency spectrum of a voice recording to remove sibilance (De-Esser) and to create a clear, warm, and pleasant sound. The equalization of multi-speaker audio can be complex and time-consuming, as each voice requires its own unique frequency spectrum equalization. Our AutoEQ simplifies this process by creating separate, time-dependent EQ profiles for each speaker, ensuring a consistent and pleasant sound output despite any changes in the voices during the recording. Our advanced algorithm parameters help you to meet all common audio specifications of platforms like Netflix, Audible, podcasts, broadcasters (EBU R128, ATSC A/85, radio and mobile, commercials) in one click. You can define a set of target parameters (integrated loudness, true peak level, dialog normalization, MaxLRA, MaxM, MaxS), like -16 LUFS for podcasts, and we will produce the audio accordingly. In addition, they offer more control for multitrack productions and for the Adaptive Leveler. We would like to give away free hours for new Auphonic users, to try out our free advanced algorithms. Please use this URL to register your new Auphonic account. the code is valid till end of March 2023 and will give you 5 extra production hours for the next month. Happy content creation! More Audio Examples There is no better way to experience Auphonic than hearing the difference our post production tool makes when applied to different types of audio and content. We are happy to share that our new features page now contains some new audio examples you can listen to explore our web tool, and we will add even more examples in the next weeks. Full Article News
algorithms ETSI releases a Technical Report on autonomic network management and control applying machine learning and other AI algorithms By www.etsi.org Published On :: Thu, 28 Apr 2022 06:14:33 GMT ETSI releases a Technical Report on autonomic network management and control applying machine learning and other AI algorithms Sophia Antipolis, 5 March 2020 The ETSI Technical Committee on Core Network and Interoperability Testing (TC INT) has just released a Technical Report, ETSI TR 103 626, providing a mapping of architectural components for autonomic networking, cognitive networking and self-management. This architecture will serve the self-managing Future Internet. The ETSI TR 103 626 provides a mapping of architectural components developed in the European Commission (EC) WiSHFUL and ORCA Projects, using the ETSI Generic Autonomic Networking Architecture (GANA) model. The objective is to illustrate how the ETSI GANA model specified in the ETSI specification TS 103 195-2 can be implemented when using the components developed in these two projects. The Report also shows how the WiSHFUL architecture augmented with virtualization and hardware acceleration techniques can implement the GANA model. This will guide implementers of autonomics components for autonomic networks in their optimization of their GANA implementations. The TR addresses autonomic decision-making and associated control-loops in wireless network architectures and their associated management and control architectures. The mapping of the architecture also illustrates how to implement self-management functionality in the GANA model for wireless networks, taking into consideration another Report ETSI TR 103 495, where GANA cognitive algorithms for autonomics, such as machine learning and other AI algorithms, can be applied. Full Article
algorithms ETSI Secures Critical Infrastructures against Cyber Quantum Attacks with new TETRA Algorithms By www.etsi.org Published On :: Mon, 07 Nov 2022 17:51:09 GMT ETSI Secures Critical Infrastructures against Cyber Quantum Attacks with new TETRA Algorithms Sophia Antipolis, 8 November 2022 With the world facing growing challenges including the war in Europe and a global energy crisis, it is essential that the mission- and business-critical communications networks used by the public safety, critical infrastructure and utilities sectors (including transportation, electricity, natural gas and water plants) are secured against third-party attacks, to protect communications and sensitive data. With more than 120 countries using dedicated TETRA (Terrestrial Trunked Radio) networks for these critical services, work has been undertaken to ensure the ETSI TETRA technology standard remains robust in the face of evolving threats. Read More... Full Article
algorithms ETSI and TCCA Statement to TETRA Security Algorithms Research Findings Publication on 24 July 2023 By www.etsi.org Published On :: Tue, 29 Aug 2023 07:20:04 GMT Sophia Antipolis, 24 July 2023 The European Telecommunications Standards Institute (ETSI) and The Critical Communications Association (TCCA) are the proud authorities and custodians of the ETSI TETRA (Terrestrial Trunked Radio) technology standard, one of the world’s most secure and reliable radio communications standards. Read More... Full Article
algorithms ETSI Releases TETRA Algorithms to Public Domain, maintaining the highest security for its critical communication standard By www.etsi.org Published On :: Wed, 15 Nov 2023 09:23:53 GMT Sophia Antipolis, 14 November 2023 ETSI is happy to announce that at a meeting in October of its technical committee in charge of the TETRA standard (TCCE), a full consensus was reached to make the primitives of all TETRA Air Interface cryptographic algorithms available to the public domain. Read More... Full Article
algorithms Yeast Against the Machine: Bakers’ Yeast Could Improve Diagnosis - How our billion-year-old cousin, baker’s yeast, can reveal — more reliably than leading algorithms — whether a genetic mutation is actually harmful. By media.utoronto.ca Published On :: Wed, 06 Apr 2016 15:30:26 +0000 How our billion-year-old cousin, baker’s yeast, can reveal — more reliably than leading algorithms — whether a genetic mutation is actually harmful.Toronto, ON – It’s easier than ever to sequence our DNA, but doctors still can’t exactly tell from our genomes which diseases might befall us. Professor Fritz Roth is setting out to change this by […] Full Article Health & Medicine Media Releases University of Toronto
algorithms Combining X-ray Fluorescence, Infrared Spectroscopy and Software Algorithms for Positive Material and Contaminant Identification By www.qualitymag.com Published On :: Wed, 11 Sep 2024 00:00:00 -0400 FTIR is the primary method for material and contaminant identification but lacks sensitivity to metallic components. X-ray fluorescence (XRF) can fill this gap and improve identification accuracy. Full Article
algorithms Unsupervised Learning Algorithms By search.lib.uiowa.edu Published On :: Location: Electronic Resource- Full Article
algorithms Tools and Algorithms for the Construction and Analysis of Systems 22nd International Conference, TACAS 2016, Held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2016, Eindhoven, The Netherlands, April 2-8, 2016, Procee By search.lib.uiowa.edu Published On :: Location: Electronic Resource- Full Article
algorithms Mobile cloud computing : architectures, algorithms and applications By search.lib.uiowa.edu Published On :: Location: Engineering Library- QA76.585.D425 2016 Full Article
algorithms Extremal optimization : fundamentals, algorithms, and applications By search.lib.uiowa.edu Published On :: Location: Engineering Library- T57.L82 2015 Full Article
algorithms 291: ‘Algorithms, How Do They Work?’, With Nilay Patel By daringfireball.net Published On :: Fri, 31 Jul 2020 23:21:11 EDT Nilay Patel returns to the show to discuss this week’s House antitrust hearing featuring testimony from Tim Cook, Jeff Bezos, Sundar Pichai, and Mark Zuckerberg. Full Article
algorithms Algorithms we develop software by By grantslatton.com Published On :: 2024-11-13T05:47:01+00:00 Start working on the feature at the beginning of the day. If you don't finish by the end of the day, delete it all and start over the next day. You're allowed to keep unit tests you wrote. Full Article
algorithms Convergence, finiteness and periodicity of several new algorithms of ????-adic continued fractions By www.ams.org Published On :: Mon, 21 Oct 2024 15:01 EDT Zhaonan Wang and Yingpu Deng Math. Comp. 93 (), 2921-2942. Abstract, references and article information Full Article
algorithms Quantum Algorithms Institute Drives Predictive Model Accuracy with Quantum Collaboration By www.hpcwire.com Published On :: Tue, 12 Nov 2024 15:29:11 +0000 SURREY, British Columbia, Nov. 12, 2024 — Today, the Quantum Algorithms Institute (QAI) announced a partnership with Canadian companies, AbaQus and InvestDEFY Technologies, to solve common challenges in training machine learning […] The post Quantum Algorithms Institute Drives Predictive Model Accuracy with Quantum Collaboration appeared first on HPCwire. Full Article
algorithms Re-evaluating retrosynthesis algorithms with Syntheseus By pubs.rsc.org Published On :: Faraday Discuss., 2024, Advance ArticleDOI: 10.1039/D4FD00093E, PaperKrzysztof Maziarz, Austin Tripp, Guoqing Liu, Megan Stanley, Shufang Xie, Piotr Gaiński, Philipp Seidl, Marwin H. S. SeglerSyntheseus provides reference models and search algorithms as well as metrics to evaluate and improve synthesis planning tools.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
algorithms Understanding Algorithms With Sinead Bovell By www.wired.com Published On :: Thu, 19 Nov 2020 17:00:00 +0000 Do algorithms enhance our worst behaviors? How do algorithms influence our world views? Are social media algorithms making the world worse? Tech journalist Sinead Bovell talks with an ex-YouTube engineer, a former design ethicist from Google and an Oxford professor about the impact algorithms are having in our lives. Full Article
algorithms Harvard Professor Explains Algorithms in 5 Levels of Difficulty By www.wired.com Published On :: Wed, 08 Nov 2023 17:00:00 +0000 From the physical world to the virtual world, algorithms are seemingly everywhere. David J. Malan, Professor of Computer Science at Harvard University, has been challenged to explain the science of algorithms to 5 different people; a child, a teen, a college student, a grad student, and an expert. Director: Wendi Jonassen Director of Photography: Zach Eisen Editor: Louville Moore Host: David J. Malan Guests: Level 1: Addison Vincent Level 2: Lexi Kemmer Level 3: Patricia Guirao Level 4: Mahi Shafiullah Level 5: Chris Wiggins Creative Producer: Maya Dangerfield Line Producer: Joseph Buscemi Associate Producer: Paul Gulyas; Kameryn Hamilton Production Manager: D. Eric Martinez Production Coordinator: Fernando Davila Casting Producer: Vanessas Brown; Nicholas Sawyer Camera Operator: Brittany Berger Gaffer: Gautam Kadian Sound Mixer: Lily Van Leeuwen Production Assistant: Ryan Coppola Hair & Make-Up: Yev Wright-Mason Post Production Supervisor: Alexa Deutsch Post Production Coordinator: Ian Bryant Supervising Editor: Doug Larsen Assistant Editor: Lauren Worona Full Article
algorithms Algorithmic Collusion: Supra-competitive Prices via Independent Algorithms [electronic journal]. By encore.st-andrews.ac.uk Published On :: Full Article
algorithms Ideals, varieties, and algorithms [electronic resource] : an introduction to computational algebraic geometry and commutative algebra / David A. Cox, John Little, Donal O'Shea By darius.uleth.ca Published On :: New York : Springer, 2007 Full Article
algorithms Algebraic graph algorithms [electronic resource] : a practical guide using Python / K. Erciyes. By darius.uleth.ca Published On :: Cham, Switzerland : Springer, 2021. Full Article
algorithms COVID Moonshot: Can AI Algorithms and Volunteer Chemists Design a Knockout Antiviral? By feedproxy.google.com Published On :: Fri, 08 May 2020 17:36:00 GMT This pro-bono initiative crowdsourced 4,500 drug designs, synthesized 311, and is now testing them against viral proteins Full Article artificial-intelligence artificial-intelligence/medical-ai
algorithms Scaling diffraction data in the DIALS software package: algorithms and new approaches for multi-crystal scaling By journals.iucr.org Published On :: A new scaling program is presented with new features to support multi-sweep workflows and analysis within the DIALS software package. Full Article text
algorithms Scaling diffraction data in the DIALS software package: algorithms and new approaches for multi-crystal scaling By scripts.iucr.org Published On :: 2020-03-31 In processing X-ray diffraction data, the intensities obtained from integration of the diffraction images must be corrected for experimental effects in order to place all intensities on a common scale both within and between data collections. Scaling corrects for effects such as changes in sample illumination, absorption and, to some extent, global radiation damage that cause the measured intensities of symmetry-equivalent observations to differ throughout a data set. This necessarily requires a prior evaluation of the point-group symmetry of the crystal. This paper describes and evaluates the scaling algorithms implemented within the DIALS data-processing package and demonstrates the effectiveness and key features of the implementation on example macromolecular crystallographic rotation data. In particular, the scaling algorithms enable new workflows for the scaling of multi-crystal or multi-sweep data sets, providing the analysis required to support current trends towards collecting data from ever-smaller samples. In addition, the implementation of a free-set validation method is discussed, which allows the quantification of the suitability of scaling-model and algorithm choices. Full Article text
algorithms How algorithms influence us every day By www.mnn.com Published On :: Sun, 27 Nov 2016 19:28:31 +0000 The omnipresence of algorithms raises interesting questions about day-to-day human experience. Full Article Computers
algorithms XGEN Algorithms Earns Groundbreaking Returns for Investors By www.24-7pressrelease.com Published On :: Wed, 05 Feb 2020 07:00:00 GMT Investors report earning 12.5% in average monthly profits with XGEN Algorithms Full Article
algorithms The Theorem That Applies to Everything from Search Algorithms to Epidemiology By rss.sciam.com Published On :: Sun, 26 Apr 2020 15:00:00 GMT Perron-Frobenius theorem and linear algebra have many virtues to extol -- Read more on ScientificAmerican.com Full Article The Sciences Math
algorithms Advanced Multitrack Audio Algorithms Release (Beta) By feedproxy.google.com Published On :: Fri, 29 Mar 2019 10:16:41 +0000 Last weekend, at the Subscribe10 conference, we released Advanced Audio Algorithm Parameters for Multitrack Productions: We launched our advanced audio algorithm parameters for Singletrack Productions last year. Now these settings (and more) are available for Multitrack Algorithms as well, which gives you detailed control for each track of your production. The following new parameters are available: Fore/Background Settings: keep your music/clip tracks unchanged and set a custom background gain Multitrack Leveler Parameters: control the stereo panorama, leveling algorithm, dynamic range and compression Better Hum and Noise Reduction Controls for each track Maximum True Peak Level setting for the final mixdown Full API Support Please join our private beta program and let us know how you use these new features or if you need even more control! Fore/Background Settings The parameter Fore/Background controls whether a track should be in foreground, in background, ducked, or unchanged, which is especially important for music or clip tracks. For more details, please see Automatic Ducking, Foreground and Background Tracks . We now added the new option Unchanged and a new parameter to set the level of background segments/tracks: Unchanged (Foreground): We sometimes received complaints from users, which produced very complex music or clip tracks, that Auphonic changes the levels too hard. If you set the parameter Fore/Background to the new option Unchanged (Foreground), Level relations within this track won’t be changed at all. It will be added to the final mixdown so that foreground/solo parts of this track will be as loud as (foreground) speech from other tracks. Background Level: It is now possible to set the level of background segments/tracks (compared to foreground segments) in background and ducking tracks. By default, background and ducking segments are 18dB softer than foreground segments. Leveler Parameters Similar to our Singletrack Advanced Leveler Parameters (see this previous blog post), we also released leveling parameters for Multitrack Productions now. The following advanced parameters for our Multitrack Adaptive Leveler can be set for each track and allow you to customize which parts of the audio should be leveled, how much they should be leveled, how much dynamic range compression should be applied and to set the stereo panorama (balance): Leveler Preset: Select the Speech or Music Leveler for this track. If set to Automatic (default), a classifier will decide if this is a music or speech track. Dynamic Range: The parameter Dynamic Range controls how much leveling is applied: Higher values result in more dynamic output audio files (less leveling). If you want to increase the dynamic range by 3dB (or LU), just increase the Dynamic Range parameter by 3dB. For more details, please see Multitrack Leveler Parameters. Compressor: Select a preset for Micro-Dynamics Compression: Auto, Soft, Medium, Hard or Off. The Compressor adjusts short-term dynamics, whereas the Leveler adjusts mid-term level differences. For more details, please see Multitrack Leveler Parameters. Stereo Panorama (Balance): Change the stereo panorama (balance for stereo input files) of the current track. Possible values: L100, L75, L50, L25, Center, R25, R50, R75 and R100. If you understand German and want to know more about our Advanced Leveler Parameters and audio dynamics in general, watch our talk at the Subscribe10 conference: Video: Audio Lautheit und Dynamik. Better Hum and Noise Reduction Controls We now offer three parameters to control the combination of our Multitrack Noise and Hum Reduction Algorithms for each input track: Noise Reduction Amount: Maximum noise and hum reduction amount in dB, higher values remove more noise. In Auto mode, a classifier decides if and how much noise reduction is necessary (to avoid artifacts). Set to a custom (non-Auto) value if you prefer more noise reduction or want to bypass our classifier. Hum Base Frequency: Set the hum base frequency to 50Hz or 60Hz (if you know it), or use Auto to automatically detect the hum base frequency in each speech region. Hum Reduction Amount: Maximum hum reduction amount in dB, higher values remove more noise. In Auto mode, a classifier decides how much hum reduction is necessary in each speech region. Set it to a custom value (> 0), if you prefer more hum reduction or want to bypass our classifier. Use Disable Dehum to disable hum reduction and use our noise reduction algorithms only. Behavior of noise and hum reduction parameter combinations: Noise Reduction Amount Hum Base Frequency Hum Reduction Amount Auto Auto Auto Automatic hum and noise reduction Auto or > 0 * Disabled No hum reduction, only denoise Disabled 50Hz Auto or > 0 Force 50Hz hum reduction, no denoise Disabled Auto Auto or > 0 Automatic dehum, no denoise 12dB 60Hz Auto or > 0 Always do dehum (60Hz) and denoise (12dB) Maximum True Peak Level In the Master Algorithm Settings of your multitrack production, you can set the maximum allowed true peak level of the processed output file, which is controlled by the True Peak Limiter after our Loudness Normalization algorithms. If set to Auto (which is the current default), a reasonable value according to the selected loudness target is used: -1dBTP for 23 LUFS (EBU R128) and higher, -2dBTP for -24 LUFS (ATSC A/85) and lower loudness targets. Full API Support All advanced algorithm parameters, for Singletrack and Multitrack Productions, are available in our API as well, which allows you to integrate them into your scripts, external workflows and third-party applications. Singletrack API: Documentation on how to use the advanced algorithm parameters in our singletrack production API: Advanced Algorithm Parameters Multitrack API: Documentation of advanced settings for each track of a multitrack production: Multitrack Advanced Audio Algorithm Settings Join the Beta and Send Feedback Please join our beta and let us know your case studies, if you need any other algorithm parameters or if you have any questions! Here are some private beta invitation codes: 8tZPc3T9pH VAvO8VsDg9 0TwKXBW4Ni kjXJMivtZ1 J9APmAAYjT Zwm6HabuFw HNK5gF8FR5 Do1MPHUyPW CTk45VbV4t xYOzDkEnWP 9XE4dZ0FxD 0Sl3PxDRho uSoRQxmKPx TCI62OjEYu 6EQaPYs7v4 reIJVOwIr8 7hPJqZmWfw kti3m5KbNE GoM2nF0AcN xHCbDC37O5 6PabLBRm9P j2SoI8peiY olQ2vsmnfV fqfxX4mWLO OozsiA8DWo weJw0PXDky VTnOfOiL6l B6HRr6gil0 so0AvM1Ryy NpPYsInFqm oFeQPLwG0k HmCOkyaX9R G7DR5Sc9Kv MeQLSUCkge xCSvPTrTgl jyQKG3BWWA HCzWRxSrgW xP15hYKEDl 241gK62TrO Q56DHjT3r4 9TqWVZHZLE aWFMSWcuX8 x6FR5OTL43 Xf6tRpyP4S tDGbOUngU0 5BkOF2I264 cccHS0KveO dT29cF75gG 2ySWlYp1kp iJWPhpAimF We are happy to send further invitation codes to all interested users - please do not hesitate to contact us! If you have an invitation code, you can enter it here to activate the Multitrack Advanced Audio Algorithm Parameters: Auphonic Algorithm Parameters Private Beta Activation Full Article Audio Development News
algorithms Readability Algorithms Should Be Tools, Not Targets By feedproxy.google.com Published On :: Fri, 01 May 2020 11:30:00 +0000 The web is awash with words. They’re everywhere. On websites, in emails, advertisements, tweets, pop-ups, you name it. More people are publishing more copy than at any point in history. That means a lot of information, and a lot of competition. In recent years a slew of ‘readability’ programs have appeared to help us tidy up the things we write. (Grammarly, Readable, and Yoast are just a handful that come to mind. Full Article
algorithms Linear Convergence of First- and Zeroth-Order Primal-Dual Algorithms for Distributed Nonconvex Optimization. (arXiv:1912.12110v2 [math.OC] UPDATED) By arxiv.org Published On :: This paper considers the distributed nonconvex optimization problem of minimizing a global cost function formed by a sum of local cost functions by using local information exchange. We first propose a distributed first-order primal-dual algorithm. We show that it converges sublinearly to the stationary point if each local cost function is smooth and linearly to the global optimum under an additional condition that the global cost function satisfies the Polyak-{L}ojasiewicz condition. This condition is weaker than strong convexity, which is a standard condition for proving the linear convergence of distributed optimization algorithms, and the global minimizer is not necessarily unique or finite. Motivated by the situations where the gradients are unavailable, we then propose a distributed zeroth-order algorithm, derived from the proposed distributed first-order algorithm by using a deterministic gradient estimator, and show that it has the same convergence properties as the proposed first-order algorithm under the same conditions. The theoretical results are illustrated by numerical simulations. Full Article
algorithms Multi-group Multicast Beamforming: Optimal Structure and Efficient Algorithms. (arXiv:1911.08925v2 [eess.SP] UPDATED) By arxiv.org Published On :: This paper considers the multi-group multicast beamforming optimization problem, for which the optimal solution has been unknown due to the non-convex and NP-hard nature of the problem. By utilizing the successive convex approximation numerical method and Lagrangian duality, we obtain the optimal multicast beamforming solution structure for both the quality-of-service (QoS) problem and the max-min fair (MMF) problem. The optimal structure brings valuable insights into multicast beamforming: We show that the notion of uplink-downlink duality can be generalized to the multicast beamforming problem. The optimal multicast beamformer is a weighted MMSE filter based on a group-channel direction: a generalized version of the optimal downlink multi-user unicast beamformer. We also show that there is an inherent low-dimensional structure in the optimal multicast beamforming solution independent of the number of transmit antennas, leading to efficient numerical algorithm design, especially for systems with large antenna arrays. We propose efficient algorithms to compute the multicast beamformer based on the optimal beamforming structure. Through asymptotic analysis, we characterize the asymptotic behavior of the multicast beamformers as the number of antennas grows, and in turn, provide simple closed-form approximate multicast beamformers for both the QoS and MMF problems. This approximation offers practical multicast beamforming solutions with a near-optimal performance at very low computational complexity for large-scale antenna systems. Full Article
algorithms On analog quantum algorithms for the mixing of Markov chains. (arXiv:1904.11895v2 [quant-ph] UPDATED) By arxiv.org Published On :: The problem of sampling from the stationary distribution of a Markov chain finds widespread applications in a variety of fields. The time required for a Markov chain to converge to its stationary distribution is known as the classical mixing time. In this article, we deal with analog quantum algorithms for mixing. First, we provide an analog quantum algorithm that given a Markov chain, allows us to sample from its stationary distribution in a time that scales as the sum of the square root of the classical mixing time and the square root of the classical hitting time. Our algorithm makes use of the framework of interpolated quantum walks and relies on Hamiltonian evolution in conjunction with von Neumann measurements. There also exists a different notion for quantum mixing: the problem of sampling from the limiting distribution of quantum walks, defined in a time-averaged sense. In this scenario, the quantum mixing time is defined as the time required to sample from a distribution that is close to this limiting distribution. Recently we provided an upper bound on the quantum mixing time for Erd"os-Renyi random graphs [Phys. Rev. Lett. 124, 050501 (2020)]. Here, we also extend and expand upon our findings therein. Namely, we provide an intuitive understanding of the state-of-the-art random matrix theory tools used to derive our results. In particular, for our analysis we require information about macroscopic, mesoscopic and microscopic statistics of eigenvalues of random matrices which we highlight here. Furthermore, we provide numerical simulations that corroborate our analytical findings and extend this notion of mixing from simple graphs to any ergodic, reversible, Markov chain. Full Article
algorithms Online Algorithms to Schedule a Proportionate Flexible Flow Shop of Batching Machines. (arXiv:2005.03552v1 [cs.DS]) By arxiv.org Published On :: This paper is the first to consider online algorithms to schedule a proportionate flexible flow shop of batching machines (PFFB). The scheduling model is motivated by manufacturing processes of individualized medicaments, which are used in modern medicine to treat some serious illnesses. We provide two different online algorithms, proving also lower bounds for the offline problem to compute their competitive ratios. The first algorithm is an easy-to-implement, general local scheduling heuristic. It is 2-competitive for PFFBs with an arbitrary number of stages and for several natural scheduling objectives. We also show that for total/average flow time, no deterministic algorithm with better competitive ratio exists. For the special case with two stages and the makespan or total completion time objective, we describe an improved algorithm that achieves the best possible competitive ratio $varphi=frac{1+sqrt{5}}{2}$, the golden ratio. All our results also hold for proportionate (non-flexible) flow shops of batching machines (PFB) for which this is also the first paper to study online algorithms. Full Article