memory

Magnetoresistive Random Access Memory Structure and Method of Forming the Same

A magnetoresistive random access memory (MRAM) structure includes a bottom electrode structure. A magnetic tunnel junction (MTJ) element is over the bottom electrode structure. The MTJ element includes an anti-ferromagnetic material layer. A ferromagnetic pinned layer is over the anti-ferromagnetic material layer. A tunneling layer is over the ferromagnetic pinned layer. A ferromagnetic free layer is over the tunneling layer. The ferromagnetic free layer has a first portion and a demagnetized second portion. The MRAM also includes a top electrode structure over the first portion.




memory

M.2 INTERFACE MEMORY DEVICE AND M.2 INTERFACE CONNECTION SEAT INSERTEDLY PROVIDED THEREOF

The invention provides a M.2 interface memory device and a M.2 interface connection seat insertedly provided thereof. The M.2 interface memory device comprises a M.2 interface card and a housing provided with at least one guide groove. The M.2 interface connection seat is disposed on a circuit board, and comprises two arms and a base comprising a M.2 interface slot. At least one arm is provided with a guide rail. An opening direction of the M.2 interface slot is horizontal to a surface of the circuit board. When the M.2 interface card is inserted into the M.2 interface slot in a horizontal direction, the M.2 interface memory device will be fixed within the M.2 interface connection seat by embedding between the guide groove and the guide rail. Thus, M.2 interface memory devices of a variety of specification lengths are able to be inserted into the M.2 interface connection seat.




memory

ELECTRONIC/ELECTRICAL COMPONENT HOUSING WITH STRIPS OF METAL PLATE AND SHAPE MEMORY MATERIAL FORMING A HEAT TRANSFER PATH

Disclosed is a housing for electronic/electrical that includes an inner panel and an outer panel, a strip of metal plate, and a strip of shape memory material. The inner panel and the outer panel are disposed parallel to each other at regular intervals to define an internal space. The strip of metal plate extends from an inner surface of the outer panel. The strip of shape memory material extends from an inner surface of the inner panel and is attached or detached to/from the metal plate on the outer panel while changing into an original straight shape or a bent shape according to a temperature variation. Here, when the temperature increase beyond a first transition temperature, the shape memory material straightens to form a heat transfer path. At a low temperature environment, the shape memory material bends and is separated from the metal plate to interrupt the heat transfer path.




memory

MEMORY WITH ENHANCEMENT TO PERFORM RADIATION MEASUREMENT

Techniques are described that includes using a memory to store data within a system. The techniques include lowering a supply voltage applied to said memory and ceasing use of the memory to store data within the system. The techniques further include reading values from the memory with the supply voltage being lowered. The techniques further include determining a radiation level from an amount of corrupted ones of the values.




memory

EXOSOME AND LIPID BIOMARKERS FOR MEMORY LOSS

The present invention relates to methods of determining if a subject has an increased risk of suffering from memory impairment. The methods comprise analyzing at least one sample from the subject to determine a value of the subject's exosomal profile or combined biomarker profile (lipids plus exosomal cargo) and comparing the value of the subject's exosomal or combined biomarker profile with the value of a normal exosomal or biomarker profile, respectively. A change in the value of the subject's exosomal or combined biomarker profile, including a change in the subject's exosomal or combined biomarker profile, over normal values is indicative that the subject has an increased risk of suffering from memory impairment compared to a normal individual.




memory

ENHANCEMENT OF SPIN TRANSFER TORQUE MAGNETORESISTIVE RANDOM ACCESS MEMORY DEVICE USING HYDROGEN PLASMA

A method of making a MRAM device includes forming a magnetic tunnel junction on an electrode, the magnetic tunnel junction comprising a reference layer positioned in contact with the electrode, a tunnel barrier layer arranged on the reference layer, and a free layer arranged on the tunnel barrier layer; and depositing an encapsulating layer on and along sidewalls of the magnetic tunnel junction; wherein the exposing of the magnetic tunnel junction to hydrogen plasma is performed at a temperature from about 150 to about 250° C. An MRAM device including an encapsulating layer comprising either silicon nitride or aluminum oxide is also provided.




memory

METHOD OF FORMING A PATTERN USING ION BEAMS OF BILATERAL SYMMETRY, A METHOD OF FORMING A MAGNETIC MEMORY DEVICE USING THE SAME, AND AN ION BEAM APPARATUS GENERATING ION BEAMS OF BILATERAL SYMMETRY

A pattern-forming method includes providing a first ion beam at a first incidence angle and a second ion beam at a second incidence angle to a surface of an etch target layer formed on a substrate. Patterns are formed by patterning the etch target layer using the first and second ion beams. The first ion beam and the second ion beam are substantially symmetrical to each other with respect to a normal line that is perpendicular to a top surface of the substrate. Each of the first and second incidence angles is greater than 0 degrees and smaller than an angle obtained by subtracting a predetermined angle from 90 degrees.




memory

New Forest Rotary Club runs a fund in memory of founder president Maurice Porter

A HAMPSHIRE charity has launched its annual search for local good causes that need a cash boost.




memory

Sonic Sirius releases free Abc Soundset for Memory Moon Messiah

Sonic Sirius has announced availability of the Abc Soundset, a collection of 128 presets for the Messiah by Memory Moon, a software synthesizer inspired by the Prophet-5 polyphonic analog synth by Sequential Circuits. The soundset is suitable for Synth-Pop, New Wave, Electro, and other modern synth music. It includes arpeggios, bass, keys, leads, pads, and […]

The post Sonic Sirius releases free Abc Soundset for Memory Moon Messiah appeared first on rekkerd.org.




memory

Mindfulness and Memory

When it comes to mindfulness there is clear evidence that practicing it can be beneficial, but perhaps not for everyone all the time. It might even have some adverse effects on memory. In our final piece in our series on mindfulness, Two Guys on Your Head, Dr. Art Markman, and Dr. Bob Duke talk about...




memory

Memory, Trauma, and Treating PTSD

We may underestimate the role that our emotions of an event play in our memory of that event. But it turns out there are ways to manipulate those memories and separate the emotion out; even from Flashbulb memories. In this episode of Two Guys on Your Head, Dr. Art Markman, and Dr. Bob Duke talk...




memory

Take a trip down memory lane with the best — and worst — memories of the Kingdome


On the anniversary of the Kingdome's implosion, we take a trip down memory lane to relive its best and worst moments.




memory

40 acts of kindness,2010 Olympic memory,bisons and black history month

Winnipeg woman celebrates her fortieth birthday with forty acts of kindness,Shane Koyczan at 2010 Olympics,details on bison re-introduction program and Periodic Table of Black Cdn History in Ottawa



  • Radio/The Story from Here

memory

ABC News Quiz: Test your memory of news from around the world

There's been big news from all around the world this week — reckon you've kept up with it all? Test yourself with our news quiz.




memory

Michael's house near Dunalley burnt down in bushfires six years ago, he's still haunted by the memory

When there's a smell of smoke in the air, bushfire survivor Michael King still feels jittery. He describes it as similar to "how a Vietnam veteran might feel if he hears the sound of a chopper overhead".




memory

Improving your memory using ancient indigenous techniques

Forget Sudoku and cryptic crosswords, Australia's senior memory champion draws on indigenous cultures from around the world for memory techniques.



  • ABC Central Victoria
  • centralvic
  • Arts and Entertainment:Kids Games and Links:Memory and Puzzles
  • Community and Society:All:All
  • Community and Society:Indigenous (Aboriginal and Torres Strait Islander):Indigenous Culture
  • Community and Society:Indigenous (Aboriginal and Torres Strait Islander):Indigenous Protocols
  • Community and Society:Indigenous (Other Peoples):All
  • Health:All:All
  • Health:Older People:All
  • Australia:VIC:Castlemaine 3450

memory

ACT Rural Fire Service warns against 'complacence' as memory of 2003 bushfire fades

More than 16 years on from the bushfires that killed four people and destroyed hundreds of homes, the ACT Rural Fire Service warns the community is becoming "complacent" as memories of the territory's darkest day fade.




memory

Memory




memory

4/28/19 - Somewhere in someone's memory




memory

Making the Memory Foam Flower Chair Cushion

Sewing a new, softer cushion for a structural flower chair




memory

animal crackers: a sweet memory in every bite

  Did you know that tomorrow, April l8, is National Animal Crackers Day? ???? Oh, to return to a simpler, more innocent time, when it was all about glee rather than guilt! *     ANIMAL CRACKER (no s) by Gretchen Friel My students are inspired to read more poems aloud if I bring frosted … Continue reading animal crackers: a sweet memory in every bite




memory

Safe Dynamic Memory Management in Ada and SPARK

Safe Dynamic Memory Management in Ada and SPARK by Maroua Maalej, Tucker Taft, Yannick Moy:

Handling memory in a correct and efficient way is a step toward safer, less complex, and higher performing software-intensive systems. However, languages used for critical software development such as Ada, which supports formal verification with its SPARK subset, face challenges regarding any use of pointers due to potential pointer aliasing. In this work, we introduce an extension to the Ada language, and to its SPARK subset, to provide pointer types (“access types” in Ada) that provide provably safe, automatic storage management without any asynchronous garbage collection, and without explicit deallocation by the user. Because the mechanism for these safe pointers relies on strict control of aliasing, it can be used in the SPARK subset for formal verification, including both information flow analysis and proof of safety and correctness properties. In this paper, we present this proposal (which has been submitted for inclusion in the next version of Ada), and explain how we are able to incorporate these pointers into formal analyses

For the systems programmers among you, you might be interested in some new developments in Ada where they propose to add ownership types to Ada's pointer/access types, to improve the flexibility of the programs that can be written and whose safety can be automatically verified. The automated satisfiability of these safety properties is a key goal of the SPARK Ada subset.




memory

Ghost Files: Memory Of A Crime Is Now Available For Xbox One

Ghost Files: Memory Of A Crime is also included in the Detective Novels Bundle, which includes Noir Chronicles: City of Crime, and Path of Sin: Greed. Product Info: Developer: Artifex Mundi Publisher: Artifex Mundi Website: Games from Artifex Mundi Twitter: @ArtifexMundi




memory

'Miracle' revived the memory and glory of the 1980 U.S. hockey team's triumph

The 2004 film 'Miracle' didn't follow the script when it came to most hockey movies. It provided a dramatic retelling of one of the greatest Olympic moments.




memory

From 'Star Wars' to 'Independence Day,' an excellent adventure down summer-movie memory lane

Times entertainment columnist Glenn Whipp and film critic Justin Chang sat down to reminisce about their favorite movies and moviegoing experiences of the season.




memory

In memory of Matt Tully, Indiana delegation introduces stomach cancer awareness resolution

The Indiana congressional delegation introduced a House resolution expressing support for the goals and ideas of ''Stomach Cancer Awareness Month."

       




memory

Coronavirus: Grace Millane's family donate care packages in her memory

The cousin of Grace Millane, who was murdered in New Zealand, says she would have been "so proud".




memory

Victory and Memory: WW2 Narratives in Modern Day Russia and Ukraine

Invitation Only Research Event

11 May 2020 - 4:00pm to 5:30pm
Add to Calendar
Nina Tumarkin, Kathryn Wasserman Davis Professor of Slavic Studies; Professor of History; Director, Russian Area Studies Program, Wellesley College
Georgiy Kasianov, Head, Department of Contemporary History and Politics, Institute of History of Ukraine, National Academy of Sciences of Ukraine
Chair: Robert Brinkley, Chairman, Steering Committee, Ukraine Forum, Chatham House
In 2020 the world commemorates the 75th anniversary of the end of World War II. The Russian government has organized a wide range of activities to mark the USSR’s victory, aiming to raise the already prominent role of the USSR to a new level. Moscow also uses its narrative about the war as a propaganda tool. Ukraine, which suffered disproportionally huge human losses and material destruction during WWII, is departing from its Soviet legacy by focusing commemorative efforts on honouring the victims of WWII rather than on glorifying victory. 
 
This event will analyze the evolution of the WWII narratives in Russia and Ukraine in recent years. The panellists will discuss the role of those narratives in shaping national discourses and their implications for the countries' respective futures.
 
This event will be held on the record.

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274

Department/project




memory

Victory and Memory: WW2 Narratives in Modern Day Russia and Ukraine

Invitation Only Research Event

11 May 2020 - 4:00pm to 5:30pm
Add to Calendar
Nina Tumarkin, Kathryn Wasserman Davis Professor of Slavic Studies; Professor of History; Director, Russian Area Studies Program, Wellesley College
Georgiy Kasianov, Head, Department of Contemporary History and Politics, Institute of History of Ukraine, National Academy of Sciences of Ukraine
Chair: Robert Brinkley, Chairman, Steering Committee, Ukraine Forum, Chatham House
In 2020 the world commemorates the 75th anniversary of the end of World War II. The Russian government has organized a wide range of activities to mark the USSR’s victory, aiming to raise the already prominent role of the USSR to a new level. Moscow also uses its narrative about the war as a propaganda tool. Ukraine, which suffered disproportionally huge human losses and material destruction during WWII, is departing from its Soviet legacy by focusing commemorative efforts on honouring the victims of WWII rather than on glorifying victory. 
 
This event will analyze the evolution of the WWII narratives in Russia and Ukraine in recent years. The panellists will discuss the role of those narratives in shaping national discourses and their implications for the countries' respective futures.
 
This event will be held on the record.

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274

Department/project




memory

On the lack of memory for distributions of overshoot functionals in the case of upper almost semicontinuous processes defined on a Markov chain

D. V. Gusak and E. V. Karnaukh
Theor. Probability and Math. Statist. 99 (2020), 77-89.
Abstract, references and article information




memory

Victory and Memory: WW2 Narratives in Modern Day Russia and Ukraine

Invitation Only Research Event

11 May 2020 - 4:00pm to 5:30pm
Add to Calendar
Nina Tumarkin, Kathryn Wasserman Davis Professor of Slavic Studies; Professor of History; Director, Russian Area Studies Program, Wellesley College
Georgiy Kasianov, Head, Department of Contemporary History and Politics, Institute of History of Ukraine, National Academy of Sciences of Ukraine
Chair: Robert Brinkley, Chairman, Steering Committee, Ukraine Forum, Chatham House
In 2020 the world commemorates the 75th anniversary of the end of World War II. The Russian government has organized a wide range of activities to mark the USSR’s victory, aiming to raise the already prominent role of the USSR to a new level. Moscow also uses its narrative about the war as a propaganda tool. Ukraine, which suffered disproportionally huge human losses and material destruction during WWII, is departing from its Soviet legacy by focusing commemorative efforts on honouring the victims of WWII rather than on glorifying victory. 
 
This event will analyze the evolution of the WWII narratives in Russia and Ukraine in recent years. The panellists will discuss the role of those narratives in shaping national discourses and their implications for the countries' respective futures.
 
This event will be held on the record.

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274

Department/project




memory

Victory and Memory: WW2 Narratives in Modern Day Russia and Ukraine

Invitation Only Research Event

11 May 2020 - 4:00pm to 5:30pm
Add to Calendar
Nina Tumarkin, Kathryn Wasserman Davis Professor of Slavic Studies; Professor of History; Director, Russian Area Studies Program, Wellesley College
Georgiy Kasianov, Head, Department of Contemporary History and Politics, Institute of History of Ukraine, National Academy of Sciences of Ukraine
Chair: Robert Brinkley, Chairman, Steering Committee, Ukraine Forum, Chatham House
In 2020 the world commemorates the 75th anniversary of the end of World War II. The Russian government has organized a wide range of activities to mark the USSR’s victory, aiming to raise the already prominent role of the USSR to a new level. Moscow also uses its narrative about the war as a propaganda tool. Ukraine, which suffered disproportionally huge human losses and material destruction during WWII, is departing from its Soviet legacy by focusing commemorative efforts on honouring the victims of WWII rather than on glorifying victory. 
 
This event will analyze the evolution of the WWII narratives in Russia and Ukraine in recent years. The panellists will discuss the role of those narratives in shaping national discourses and their implications for the countries' respective futures.
 
This event will be held on the record.

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274

Department/project




memory

How people die remains in the memory of those who live on - supporting the relatives of the dying

All doctors, irrespective of their specialty or the setting in which they work, will care for patients who die. Around half of all deaths occur in hospitals. Evidence suggests that the quality of communication around this process is poorer in hospitals than in other settings, according to responses from relatives who have experienced bereavement....




memory

"Event" Cells in the Brain Help Organize Memory into Meaningful Segments

Neurons in the hippocampus categorize what we experience into abstract, discrete events, such as taking a walk versus having lunch

-- Read more on ScientificAmerican.com




memory

Can High-Intensity Exercise Improve Your Memory?

Exercise like walking, swimming, and even dancing have been shown to be good for your memory, but the optimal intensity of that exercise has been unclear... until now

-- Read more on ScientificAmerican.com




memory

When We Cook Up a Memory, Experience Is Just One Ingredient

People hate Mondays. And they love Fridays. The Carpenters crooned about being blue in "Rainy Days and Mondays." The restaurant chain T.G.I. Friday's might restrict its clientele to workaholics if it were to rename itself T.G.I. Monday's.




memory

Memory in a House - part 1

Lucy Boston had led an adventurous life for a woman of her time. She had dropped out of Oxford University to become a nurse during WWI and worked in a hospital in Normandy. She had married her cousin, had her son Peter, divorced her husband, and moved to Germany and Italy to paint. When Peter started Cambridge, Lucy also moved to Cambridge and began obsessively painting King's College Chapel. Then in 1939, she bought The Manor, Hemingford Grey.

In Memory in a House, Lucy describes the two years that it took to restore The Manor as "which were by far the happiest of my life, even in spite of the war that broke out as soon as the builders began." (p. 19) In fact, she views her realtionship with the house as a love affair. She was aware that the house, which was built as a Norman manor in 1120 by Payne Osmundsen, was very historic, and she eventually documented everything she found and all the changes she made.

The forced restoration was brought about by the fact that the house was structually unsound due to cheap and unskillful renovations over the years. Faced with unsupported structural beams, walls cracking from top to bottom, and drastically sloping floors, Lucy was had no choice but to fix these problems. She was lucky enough to get honest and competent builders and architects to help her with the delicate job of historical renovation.

It becomes clear while reading the book that restoring the house was as much a creative endeavor for Lucy as painting a picture, or writing fiction. She was extremely sensitive to atmosphere, and accepted the physical imperfections of the house as part of the character that it had developed as it aged. She was also willing to change her mind about the alterations and restoration as she went along; the dining room, which she had thought was hopeless and would be used just as a corridor, became the center of her life, connecting the interior of the house with its equally important exterior garden.



  • Children of Green Knowe
  • Lucy Maria Boston
  • Manor at Hemingford Grey
  • Memory in a House

memory

Why We Need Libraries, Or, Memory and Knowledge


"Writing is thinking in slow motion. We see what at normal speeds escapes us, can rerun the reel at will to look for errors, erase, interpolate, and rethink. Most thoughts are a light rain, fall upon the ground, and dry up. Occasionally they become a stream that runs a short distance before it disappears. Writing stands an incomparably better chance of getting somewhere.

"... What is written can be given endlessly and yet retained, read by thousands even while it is being rewritten, kept as it was and revised at the same time. Writing is magic." 
Walter Kaufmann

We are able to know things because they happen again and again. We know about the sun because it glares down on us day after day. Scientists learn the laws of nature, and build confidence in their knowledge, by testing their theories over and over and getting the same results each time. We would be unable to learn the patterns and ways of our world if nothing were repeatable.

But without memory, we could learn nothing even if the world were tediously repetitive. Even though the sun rises daily in the east, we could not know this if we couldn't remember it.

The world has stable patterns, and we are able to discover these patterns because we remember. Knowledge requires more than memory, but memory is an essential element.

The invention of writing was a great boon to knowledge because writing is collective memory. For instance, the Peloponnesian wars are known to us through Thucydides' writings. People understand themselves and their societies in part through knowing their history. History, as distinct from pre-history, depends on the written word. For example, each year at the Passover holiday, Jewish families through the ages have read the story of the Israelite exodus from Egypt. We are enjoined to see ourselves as though we were there, fleeing Egypt and trudging through the desert. Memory, recorded for all time, creates individual and collective awareness, and motivates aspirations and actions.

Without writing, much collective memory would be lost, just as books themselves are sometimes lost. We know, for instance, that Euclid wrote a book called Porisms, but the book is lost and we know next to nothing about its message. Memory, and knowledge, have been lost.

Memory can be uncertain. We've all experienced that on the personal level. Collective memory can also be uncertain. We're sometimes uncertain of the meaning of rare ancient words, such as lilit in Isaiah (34:14) or gvina in Job (10:10). Written traditions, while containing an element of truth, may be of uncertain meaning or veracity. For instance, we know a good deal, both from the Bible and from archeological findings, about Hezekiah who ruled the kingdom of Judea in the late 8th century BCE. About David, three centuries earlier, we can be much less certain. Biblical stories are told in great detail but corroboration is hard to obtain.

Memory can be deliberately corrupted. Records of history can be embellished or prettified, as when a king commissions the chronicling of his achievements. Ancient monuments glorifying imperial conquests are invaluable sources of knowledge of past ages, but they are unreliable and must be interpreted cautiously. Records of purported events that never occurred can be maliciously fabricated. For instance, The Protocols of the Elders of Zion is pure invention, though that book has been re-published voluminously throughout the world and continues to be taken seriously by many people. Memory is alive and very real, even if it is memory of things that never happened.

Libraries are the physical medium of human collective memory, and an essential element in maintaining and enlarging our knowledge. There are many types of libraries. The family library may have a few hundred books, while the library of Congress has 1,349 km of bookshelves and holds about 147 million items. Libraries can hold paper books or digital electronic documents. Paper can perish in fire as happened to the Alexandrian library, while digital media can be erased, or become damaged and unreadable. Libraries, like memory itself, are fragile and need care.

Why do we need libraries? Being human means, among other things, the capacity for knowledge, and the ability to appreciate and benefit from it. The written record is a public good, like the fresh air. I can read Confucius or Isaiah centuries after they lived, and my reading does not consume them. Our collective memory is part of each individual, and preserving that memory preserves a part of each of us. Without memory, we are without knowledge. Without knowledge, we are only another animal.




memory

We’re Not Good At Spotting When Someone Has A False Memory Of Committing A Crime

By Emily Reynolds. Findings have implications for judges, police officers, and others involved with gathering evidence and interviewing eyewitnesses.




memory

Rewording the brain : how cryptic crosswords can improve your memory and boost the power and agility of your brain / David Astle.

Memory.




memory

Lost and found : memory, identity, and who we became when we're no longer ourselves / Jules Montague.

Brain -- Diseases.




memory

Memory wise : how memory works and what to do when it doesn't / Dr Anne Unkenstein.

Memory.




memory

A photographic memory : George S. Hutton, Port Adelaide and surrounds, 1924-1984 / Erina S. Hutton.

Hutton, George Stewart, 1906-1984.




memory

SmartExchange: Trading Higher-cost Memory Storage/Access for Lower-cost Computation. (arXiv:2005.03403v1 [cs.LG])

We present SmartExchange, an algorithm-hardware co-design framework to trade higher-cost memory storage/access for lower-cost computation, for energy-efficient inference of deep neural networks (DNNs). We develop a novel algorithm to enforce a specially favorable DNN weight structure, where each layerwise weight matrix can be stored as the product of a small basis matrix and a large sparse coefficient matrix whose non-zero elements are all power-of-2. To our best knowledge, this algorithm is the first formulation that integrates three mainstream model compression ideas: sparsification or pruning, decomposition, and quantization, into one unified framework. The resulting sparse and readily-quantized DNN thus enjoys greatly reduced energy consumption in data movement as well as weight storage. On top of that, we further design a dedicated accelerator to fully utilize the SmartExchange-enforced weights to improve both energy efficiency and latency performance. Extensive experiments show that 1) on the algorithm level, SmartExchange outperforms state-of-the-art compression techniques, including merely sparsification or pruning, decomposition, and quantization, in various ablation studies based on nine DNN models and four datasets; and 2) on the hardware level, the proposed SmartExchange based accelerator can improve the energy efficiency by up to 6.7$ imes$ and the speedup by up to 19.2$ imes$ over four state-of-the-art DNN accelerators, when benchmarked on seven DNN models (including four standard DNNs, two compact DNN models, and one segmentation model) and three datasets.




memory

Complexity and approximation : in memory of Ker-I Ko

9783030416720 (electronic bk.)




memory

Quantile regression under memory constraint

Xi Chen, Weidong Liu, Yichen Zhang.

Source: The Annals of Statistics, Volume 47, Number 6, 3244--3273.

Abstract:
This paper studies the inference problem in quantile regression (QR) for a large sample size $n$ but under a limited memory constraint, where the memory can only store a small batch of data of size $m$. A natural method is the naive divide-and-conquer approach, which splits data into batches of size $m$, computes the local QR estimator for each batch and then aggregates the estimators via averaging. However, this method only works when $n=o(m^{2})$ and is computationally expensive. This paper proposes a computationally efficient method, which only requires an initial QR estimator on a small batch of data and then successively refines the estimator via multiple rounds of aggregations. Theoretically, as long as $n$ grows polynomially in $m$, we establish the asymptotic normality for the obtained estimator and show that our estimator with only a few rounds of aggregations achieves the same efficiency as the QR estimator computed on all the data. Moreover, our result allows the case that the dimensionality $p$ goes to infinity. The proposed method can also be applied to address the QR problem under distributed computing environment (e.g., in a large-scale sensor network) or for real-time streaming data.




memory

Limit theorems for long-memory flows on Wiener chaos

Shuyang Bai, Murad S. Taqqu.

Source: Bernoulli, Volume 26, Number 2, 1473--1503.

Abstract:
We consider a long-memory stationary process, defined not through a moving average type structure, but by a flow generated by a measure-preserving transform and by a multiple Wiener–Itô integral. The flow is described using a notion of mixing for infinite-measure spaces introduced by Krickeberg (In Proc. Fifth Berkeley Sympos. Math. Statist. and Probability (Berkeley, Calif., 1965/66), Vol. II: Contributions to Probability Theory, Part 2 (1967) 431–446 Univ. California Press). Depending on the interplay between the spreading rate of the flow and the order of the multiple integral, one can recover known central or non-central limit theorems, and also obtain joint convergence of multiple integrals of different orders.




memory

Memory and Brain Systems: 1969-2009

Larry R. Squire
Oct 14, 2009; 29:12711-12716
40th Anniversary Retrospective




memory

Indigenous peoples and dementia : new understandings of memory loss and memory care

9780774837835 (hardcover)




memory

Neural Mechanisms of Visual Working Memory in Prefrontal Cortex of the Macaque

Earl K. Miller
Aug 15, 1996; 16:5154-5167
Articles