Event Begins: Thursday, November 14, 2024 3:00pm
Location: Industrial and Operations Engineering Building
Organized By: Industrial & Operations Engineering

About the speaker: Courtney Paquette is an assistant professor at McGill University and a CIFAR Canada AI chair, MILA. She was awarded a Sloan Research Fellowship in Computer Science in 2024. Paquette’s research broadly focuses on designing and analyzing algorithms for large-scale optimization problems, motivated by applications in data science. She is also interested in scaling limits of stochastic learning algorithms. She received her PhD from the mathematics department at the University of Washington (2017), held postdoctoral positions at Lehigh University (2017-2018) and the University of Waterloo (NSF postdoctoral fellowship, 2018-2019), and works 20% as a research scientist at Google DeepMind, Montreal.


Abstract: Given the massive scale of modern ML models, we now only get a single shot to train them effectively. This restricts our ability to test multiple architectures and hyper-parameter configurations. Instead, we need to understand how these models scale, allowing us to experiment with smaller problems and then apply those insights to larger-scale models. In this talk, I will present a framework for analyzing scaling laws in stochastic learning algorithms using a power-law random features model, leveraging high-dimensional probability and random matrix theory. I will then use this scaling law to address the compute-optimal question: How should we choose model size and hyper-parameters to achieve the best possible performance in the most compute-efficient manner?

Gallotta, C; Gouwy, S A; Komaromi, L. Geological Survey of Canada, Open File 8792, 2021, 50 pages, https://doi.org/10.4095/328273
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328273.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328273.jpg" title="Geological Survey of Canada, Open File 8792, 2021, 50 pages, https://doi.org/10.4095/328273" height="150" border="1" /></a>

Search Engine Optimization (SEO) has become a fine science. Tweaking, changing, and measuring is all part of the ongoing optimization process. SEO truly is a process that requires constant monitoring and attention. In order for a website to perform well, its managers and webmasters must adapt their SEO techniques as the search engine algorithms change.

On Page Search Engine Optimization

Published at LXer: The Arch Linux-based and KDE Plasma-focused CachyOS distribution has a new ISO release for September 2024 adding various performance improvements and optimizations across the...

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I have noticed a lot of queries of SproutSearch's main database table are getting slow as SproutSearch passes 8 million indexed blogs. I finally decided to do something about it after trying to add alter this table. I attempted to add a column that keeps track of the date and time of each blog's most recent post. The alter table command ran for at least 8 hours, and then MySQL either crashed or the admins killed my process. I attempted this a second time without making a new index, which also failed. I figured I would just create a new table with the extra column and write a program to slowly copy everything over. The first version of this PHP program queried 10,000 rows of data from the old table and inserted them one by one into the new table. I set up a cron job to run this every 10 minutes. Once the new table started getting big, the cron jobs were overlapping, some records were not copied, and copy processes started backing up. It dawned on me that I'd better learn something about MySQL optimization. I read some online articles and decided to try using mysqli_multi_query to copy the records. That would reduce the network overhead. The program ran several times faster but I wanted to look into other methods. I tried using prepared statements, which wasn't much better. I found this excellent article (http://www.informit.com/articles/article.asp?p=377652&seqNum=4&rl=1) which said if I use the insert format like: insert into table (column1, column2) values(val1, val2), (val1, val2)... MySQL wouldn't have to flush the index after every insert. I made my program create a giant insert statement in this format. I tried it out and it only took a few seconds when the new table was empty. I modified the program to run 10 batches of 10,000 records, which would take a few minutes. This program has been running for a few days, and all my data is finally in the new table. I am still having problems with the table being locked during lengthy select statements. It causes certain pages to hang for a long time. I am now copying all the data from a MYISAM table to a INNODB table because it has row level locking.

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Tips for Helping Your RSS Feed Perform!
In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.

Complete Article - SEO for RSS Feeds

RSS feeds are a great communication medium, and when properly managed, web feeds can bring in significant Internet traffic. RSS feeds should contain compelling themed content with episodic titles that are united in common broad theme. Use RSS feeds as an online marketing and search engine optimization tool. Just as optimizing an HTML web page will increase exposure, so too will an RSS feed that is properly optimized and promoted. Use these simple tips to improve your web feed exposure.

RSS Feed Tips to Help Search Engine Optimization

Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

Audio File Optimization Tips

The growth of video on the web has exploded in recent years. Competitors will leave you in the dust if you fail to adapt and provide the medium your customers are exploring. Keep in mind that simply having a video is not enough! To make the most of your video content, you should take steps to optimize the video and increase your exposure.

Video Optimization

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Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

1. Optimize Landing Page

Create a landing page for the audio files. The landing page should explain the audio content and encourage subscriptions. Outline the steps the visitor should take in order to subscribe or listen to the audio file. Make an effort to interact with the visitor on the landing page, and make it as easy as possible for them to subscribe or listen to your podcast.

Audio File Optimization

Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

1. Optimize Landing Page

Create a landing page for the audio files. The landing page should explain the audio content and encourage subscriptions. Outline the steps the visitor should take in order to subscribe or listen to the audio file. Make an effort to interact with the visitor on the landing page, and make it as easy as possible for them to subscribe or listen to your podcast.

Audio File Optimization

Tips for Helping Your RSS Feed Perform!
In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.

Simple steps to optimize an RSS feed for search engines:

Search Engine Optimization for RSS Feeds

RSS feeds are a great communication medium, and when properly managed, web feeds can bring in significant Internet traffic. RSS feeds should contain compelling themed content with episodic titles that are united in common broad theme. Use RSS feeds as an online marketing and search engine optimization tool. Just as optimizing an HTML web page will increase exposure, so too will an RSS feed that is properly optimized and promoted. Use these simple tips to improve your web feed exposure.


RSS Feed Tips to Help Search Engine Optimization

Tips for Helping Your RSS Feed Perform!
In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.

Search Engine Optimization for RSS

Optimizing your video for search engines will increase the exposure that the video receives, and optimization will also help spread the video's message. Follow these steps to enhance your videos and improve their rankings...

1. Shorter Videos Rank Better

No big surprise here -- the file size of short videos is much smaller than that of longer videos. On the video networks like YouTube, short videos are viewed far more often than longer ones. A length of less than 3 minutes per video seems to be ideal, and absolutely make every effort to keep your video under 10 minutes! If you have a long video segment, consider breaking it into multiple videos. The more popular videos on the video networks are given more exposure, which will also help increase the number of views received.

Video Optimization - Part 2

RSS feeds are a great communication medium, and when properly managed, web feeds can bring in significant Internet traffic. RSS feeds should contain compelling themed content with episodic titles that are united in common broad theme. Use RSS feeds as an online marketing and search engine optimization tool. Just as optimizing an HTML web page will increase exposure, so too will an RSS feed that is properly optimized and promoted. Use these simple tips to improve your web feed exposure.

RSS Feed Tips to Help Search Engine Optimization

Tips for Helping Your RSS Feed Perform!

In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.

Simple steps to optimize an RSS feed for search engines:

Search Engine Optimization for RSS

RSS feeds are a great communication medium, and when properly managed, web feeds can bring in significant Internet traffic. RSS feeds should contain compelling themed content with episodic titles that are united in common broad theme. Use RSS feeds as an online marketing and search engine optimization tool. Just as optimizing an HTML web page will increase exposure, so too will an RSS feed that is properly optimized and promoted. Use these simple tips to improve your web feed exposure.

RSS Feed Tips to Help Search Engine Optimization

Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

1. Optimize Landing Page

Create a landing page for the audio files. The landing page should explain the audio content and encourage subscriptions. Outline the steps the visitor should take in order to subscribe or listen to the audio file. Make an effort to interact with the visitor on the landing page, and make it as easy as possible for them to subscribe or listen to your podcast.

Audio File Optimization Tips

Tips for Helping Your RSS Feed Perform!

In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.

Search Engine Optimization for RSS

Search Engine Optimization for RSS

Tips for Helping Your RSS Feed Perform!
In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.
Simple steps to optimize an RSS feed for search engines:

Search Engine Optimiation for RSS Feeds

Tips for Helping Your RSS Feed Perform!

In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.

Search Engine Optimization for RSS Feeds

Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

1. Optimize Landing Page

Create a landing page for the audio files. The landing page should explain the audio content and encourage subscriptions. Outline the steps the visitor should take in order to subscribe or listen to the audio file. Make an effort to interact with the visitor on the landing page, and make it as easy as possible for them to subscribe or listen to your podcast.


Audio File Optimization Tips

Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

1. Optimize Landing Page

Create a landing page for the audio files. The landing page should explain the audio content and encourage subscriptions. Outline the steps the visitor should take in order to subscribe or listen to the audio file. Make an effort to interact with the visitor on the landing page, and make it as easy as possible for them to subscribe or listen to your podcast.

Audio File Optimization Tips

RSS feeds are a great communication medium, and when properly managed, web feeds can bring in significant Internet traffic. RSS feeds should contain compelling themed content with episodic titles that are united in common broad theme. Use RSS feeds as an online marketing and search engine optimization tool. Just as optimizing an HTML web page will increase exposure, so too will an RSS feed that is properly optimized and promoted. Use these simple tips to improve your web feed exposure.

RSS Feed Tips to Help Search Engine Optimization

Tips for Helping Your RSS Feed Perform!

In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.

Search Engine Optimization for RSS

Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

1. Optimize Landing Page

Create a landing page for the audio files. The landing page should explain the audio content and encourage subscriptions. Outline the steps the visitor should take in order to subscribe or listen to the audio file. Make an effort to interact with the visitor on the landing page, and make it as easy as possible for them to subscribe or listen to your podcast.

Audio File Optimization Tips

Tips for Helping Your RSS Feed Perform!
In some ways RSS is very similar to HTML, the language commonly used to create websites. Just as with HTML, webmasters using traditional search engine optimization tactics when creating an RSS feed will find that their RSS feed receives additional exposure and interest.

Search Engine Optimization for RSS

Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

Audio File Optimization Tips

Optimize your audio files to increase their popularity, just as you would optimize a website. Audio search engines are becoming more advanced as audio files become more commonplace on the Internet. Here are some tips to optimize your audio offerings...

1. Optimize Landing Page

Create a landing page for the audio files. The landing page should explain the audio content and encourage subscriptions. Outline the steps the visitor should take in order to subscribe or listen to the audio file. Make an effort to interact with the visitor on the landing page, and make it as easy as possible for them to subscribe or listen to your podcast.

Audio File Optimization

Fully updated to reflect modern developments in the field, the Fifth Edition of An Introduction to Optimization fills the need for an accessible, yet rigorous, introduction to optimization theory and methods, featuring innovative coverage and a straightforward approach. The book begins with a review of basic definitions and notations while also providing the related fundamental background of linear algebra, geometry, and calculus. With this foundation, the authors explore the essential topics of unconstrained optimization problems, linear programming problems, and nonlinear constrained optimization. In addition, the book includes an introduction to artificial neural networks, convex optimization, multi-objective optimization, and applications of optimization in… [Continue Reading]

In the end, your success or failure is a combination of what you control (your decision making) and what you don't (timing). Most people aren't really great at decision making. But that's something you can get better at. So let's move to the harder dynamic that we can't control – and that's timing. Everything in ... Read more

The post Premature Optimization is a Timing Mistake appeared first on Chris Lema.

E-mail spam is no more garbage but risk since it recently includes virus attachments and spyware agents which make the recipients' system ruined, therefore, there is an emerging need for spam detection. Many spam detection techniques based on machine learning techniques have been proposed. As the amount of spam has been increased tremendously using bulk mailing tools, spam detection techniques should counteract with it. To cope with this, parameters optimization and feature selection have been used to reduce processing overheads while guaranteeing high detection rates. However, previous approaches have not taken into account feature variable importance and optimal number of features. Moreover, to the best of our knowledge, there is no approach which uses both parameters optimization and feature selection together for spam detection. In this paper, we propose a spam detection model enabling both parameters optimization and optimal feature selection; we optimize two parameters of detection models using Random Forests (RF) so as to maximize the detection rates. We provide the variable importance of each feature so that it is easy to eliminate the irrelevant features. Furthermore, we decide an optimal number of selected features using two methods; (i) only one parameters optimization during overall feature selection and (ii) parameters optimization in every feature elimination phase. Finally, we evaluate our spam detection model with cost-sensitive measures to avoid misclassification of legitimate messages, since the cost of classifying a legitimate message as a spam far outweighs the cost of classifying a spam as a legitimate message. We perform experiments on Spambase dataset and show the feasibility of our approaches.

What Is Supply Path Optimization? This article delves into the workings of Supply Path Optimization (SPO), an approach designed to refine the ad purchasing procedure by minimizing intermediaries between advertisers and their intended audiences, thus promoting cost-effectiveness, increased efficiency, and transparency. It will also cover the advantages of SPO and provide strategies for [...]

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Buying online is growing, and FPL Food LLC in Augusta, Ga., has been leaning into this trend while also selling large volumes of beef to retail stores, foodservice and food manufacturing partners.

Customer satisfaction is crucial for any business, and a route optimizer can help you enhance it. By optimizing your driving routes, you can provide more accurate estimated arrival times to your customers. This allows them to plan their day accordingly and reduces the chances of missed or delayed appointments. Moreover, by optimizing your routes and minimizing the time spent on the road, you can offer faster and more reliable service to your customers. This can lead to increased customer loyalty and positive reviews, boosting your business reputation.

A crystal structure with N atoms in its unit cell can be solved starting from a model with atoms 1 to j − 1 being located. To locate the next atom j, the method uses a modified definition of the traditional R1 factor where its dependencies on the locations of atoms j + 1 to N are removed. This modified R1 is called the single-atom R1 (sR1), because the locations of atoms 1 to j − 1 in sR1 are the known parameters, and only the location of atom j is unknown. Finding the correct position of atom j translates thus into the optimization of the sR1 function, with respect to its fractional coordinates, xj, yj, zj. Using experimental data, it has been verified that an sR1 has a hole near each missing atom. Further, it has been verified that an algorithm based on sR1, hereby called the sR1 method, can solve crystal structures (with up to 156 non-hydrogen atoms in the unit cell). The strategy to carry out this calculation has also been optimized. The main feature of the sR1 method is that, starting from a single arbitrarily positioned atom, the structure is gradually revealed. With the user's help to delete poorly determined parts of the structure, the sR1 method can build the model to a high final quality. Thus, sR1 is a viable and useful tool for solving crystal structures.

A method to optimize the thermal deformation of an indirectly cryo-cooled silicon crystal monochromator exposed to intense X-rays at a low-emittance diffraction-limited synchrotron radiation source is presented. The thermal-induced slope error of the monochromator crystal has been studied as a function of heat transfer efficiency, crystal temperature distribution and beam footprint size. A partial cooling method is proposed, which flattens the crystal surface profile within the beam footprint by modifying the cooling contact area to optimize the crystal peak temperature. The optimal temperature varies with different photon energies, which is investigated, and a proper cooling strategy is obtained to fulfil the thermal distortion requirements over the entire photon energy range. At an absorbed power up to 300 W with a maximum power density of 44.8 W mm−2 normal incidence beam from an in-vacuum undulator, the crystal thermal distortion does not exceed 0.3 µrad at 8.33 keV. This method will provide references for the monochromator design on diffraction-limited synchrotron radiation or free-electron laser light sources.

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.

A multi-objective genetic algorithm (MOGA) is a powerful global optimization tool, but its results are considerably affected by the crossover parameter ηc. Finding an appropriate ηc demands too much computing time because MOGA needs be run several times in order to find a good ηc. In this paper, a self-adaptive crossover parameter is introduced in a strategy to adopt a new ηc for every generation while running MOGA. This new scheme has also been adopted for a multi-generation Gaussian process optimization (MGGPO) when producing trial solutions. Compared with the existing MGGPO and MOGA, the MGGPO and MOGA with the new strategy show better performance in nonlinear optimization for the design of low-emittance storage rings.

Investigation of the analyte soaking conditions on the crystalline sponge {[(ZnI2)3(tpt)2·x(solvent)]n} method using a statistical design of experiments model has provided fundamental insights into the influence of experimental variables. This approach focuses on a single analyte tested via 60 experiments (20 unique conditions) to identify the main effects for success and overall guest structure quality. This is employed as a basis for the development of a novel molecular structure grading system that enables the quantification of guest exchange quality.

Gaurav Dhiman is a respected expert in Enterprise Business Applications and ERP Systems

Jonathan Block Ascends to Co-CEO at BrainTap, Pioneers in Brainwave Optimization