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Michal Aharon
Michal Aharon is an Israeli computer scientist known for her research on sparse dictionary learning, image denoising, and the K-SVD algorithm in machine learning. She is a researcher on advertisement ranking for Yahoo! in Haifa. Education and career Aharon was a student at the Technion – Israel Institute of Technology, earning bachelor's and master's degrees there in 2001 and 2004, and completing her Ph.D. in 2006. Her dissertation, ''Learning Dictionaries for Sparse Representations'', was supervised by Michael Elad. After working for HP Labs in Haifa, Aharon moved to Yahoo! Labs in 2011. In 2014, she became head of the Yahoo! ad ranking science team, which develops algorithms for advertisement selection for Yahoo! Native Yahoo! Native (formerly known as Yahoo! Advertising, Yahoo! Search Marketing and Yahoo! Gemini) is a native "Pay per click" Internet advertising service provided by Yahoo. Yahoo began offering this service after acquiring Overture Services, Inc. .... Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sparse Dictionary Learning
Sparse coding is a representation learning method which aims at finding a sparse representation of the input data (also known as sparse coding) in the form of a linear combination of basic elements as well as those basic elements themselves. These elements are called ''atoms'' and they compose a ''dictionary''. Atoms in the dictionary are not required to be orthogonal, and they may be an over-complete spanning set. This problem setup also allows the dimensionality of the signals being represented to be higher than the one of the signals being observed. The above two properties lead to having seemingly redundant atoms that allow multiple representations of the same signal but also provide an improvement in sparsity and flexibility of the representation. One of the most important applications of sparse dictionary learning is in the field of compressed sensing or signal recovery. In compressed sensing, a high-dimensional signal can be recovered with only a few linear measurements pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Image Denoising
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio. All signal processing devices, both analog and digital, have traits that make them susceptible to noise. Noise can be random with an even frequency distribution (white noise), or frequency-dependent noise introduced by a device's mechanism or signal processing algorithms. In electronic systems, a major type of noise is ''hiss'' created by random electron motion due to thermal agitation. These agitated electrons rapidly add and subtract from the output signal and thus create detectable noise. In the case of photographic film and magnetic tape, noise (both visible and audible) is introduced due to the grain structure of the medium. In photograp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
K-SVD
In applied mathematics, K-SVD is a dictionary learning algorithm for creating a dictionary for sparse representations, via a singular value decomposition approach. K-SVD is a generalization of the k-means clustering method, and it works by iteratively alternating between sparse coding the input data based on the current dictionary, and updating the atoms in the dictionary to better fit the data. It is structurally related to the expectation maximization (EM) algorithm. K-SVD can be found widely in use in applications such as image processing, audio processing, biology, and document analysis. K-SVD algorithm K-SVD is a kind of generalization of K-means, as follows. The k-means clustering can be also regarded as a method of sparse representation. That is, finding the best possible codebook to represent the data samples \^M_ by Nearest neighbor search, nearest neighbor, by solving : \quad \min \limits _ \ \qquad \text \forall i, x_i = e_k \text k. which is equivalent to : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machine Learning
Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so. Machine learning algorithms are used in a wide variety of applications, such as in medicine, email filtering, speech recognition, agriculture, and computer vision, where it is difficult or unfeasible to develop conventional algorithms to perform the needed tasks.Hu, J.; Niu, H.; Carrasco, J.; Lennox, B.; Arvin, F.,Voronoi-Based Multi-Robot Autonomous Exploration in Unknown Environments via Deep Reinforcement Learning IEEE Transactions on Vehicular Technology, 2020. A subset of machine learning is closely related to computational statistics, which focuses on making predicti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quality Score
Quality Score is a metric used by Google, Yahoo! (called ''Quality Index''), Facebook (called Ad Quality) and Bing that influences the ad rank and cost per click (CPC) of ads. To determine the position of the ad on a search engine, each ad is allocated using a process which takes into account the bid and the Quality Score. Ads are then listed in descending order based on the result of that equation. The exact weight of Quality Score versus bid has not been revealed by any of the major search engines, and each company has stated that they reserve the right to continually adjust their ranking methodologies. Quality Score is also used to determine if a keyword is even eligible to enter the auction and show an ad. Keywords with low or poor Quality Score might not be eligible or ads might show rarely. In late 2008, Google revealed that Quality Score was used to determine which ads it would show above organic results, and that a high-quality score could actually cause ads to jump ove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yahoo!
Yahoo! (, styled yahoo''!'' in its logo) is an American web services provider. It is headquartered in Sunnyvale, California and operated by the namesake company Yahoo Inc., which is 90% owned by investment funds managed by Apollo Global Management and 10% by Verizon Communications. It provides a web portal, search engine Yahoo Search, and related services, including My Yahoo!, Yahoo Mail, Yahoo News, Yahoo Finance, Yahoo Sports and its advertising platform, Yahoo! Native. Yahoo was established by Jerry Yang and David Filo in January 1994 and was one of the pioneers of the early Internet era in the 1990s. However, usage declined in the late 2000s as some services discontinued and it lost market share to Facebook and Google. History Founding In January 1994, Yang and Filo were electrical engineering graduate students at Stanford University, when they created a website named "Jerry and David's guide to the World Wide Web". The site was a human-edited web directory, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haifa
Haifa ( he, חֵיפָה ' ; ar, حَيْفَا ') is the third-largest city in Israel—after Jerusalem and Tel Aviv—with a population of in . The city of Haifa forms part of the Haifa metropolitan area, the third-most populous metropolitan area in Israel. It is home to the Baháʼí Faith's Baháʼí World Centre, and is a UNESCO World Heritage Site and a destination for Baháʼí pilgrimage. Built on the slopes of Mount Carmel, the settlement has a history spanning more than 3,000 years. The earliest known settlement in the vicinity was Tell Abu Hawam, a small port city established in the Late Bronze Age (14th century BCE). Encyclopedia Judaica, ''Haifa'', Keter Publishing, Jerusalem, 1972, vol. 7, pp. 1134–1139 In the 3rd century CE, Haifa was known as a dye-making center. Over the millennia, the Haifa area has changed hands: being conquered and ruled by the Canaanites, Israelites, Phoenicians, Assyrians, Babylonians, Persians, Hasmoneans, Romans, Byzantines, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technion – Israel Institute Of Technology
The Technion – Israel Institute of Technology ( he, הטכניון – מכון טכנולוגי לישראל) is a public research university located in Haifa, Israel. Established in 1912 under the dominion of the Ottoman Empire, the Technion is the oldest university in the country. The Technion is ranked as one of the top universities in both Israel and the Middle East, and in the world's top 100 universities in the 2022 Academic Ranking of World Universities. The university offers degrees in science and engineering, and related fields such as architecture, medicine, industrial management, and education. It has 19 academic departments, 60 research centers, and 12 affiliated teaching hospitals. Since its founding, it has awarded more than 123,000 degrees and its graduates are cited for providing the skills and education behind the creation and protection of the State of Israel. Technion's 565 faculty members include three Nobel Laureates in chemistry. Four Nobel Laureates ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Elad
Michael Elad (born December 10, 1963) is a professor of Computer Science at the Technion - Israel Institute of Technology. His work includes fundamental contributions in the field of sparse representations, and deployment of these ideas to algorithms and applications in signal processing, image processing and machine learning. Academic career Elad holds a B.Sc. (1986), M.Sc. (1988) and D.Sc. (1997) in electrical engineering from the Technion - Israel Institute of Technology. His M.Sc., under the guidance of Prof. David Malah, focused on video compression algorithms; and his D.Sc. on super-resolution algorithms for image sequences, guided by Prof. Arie Feuer. After several years (1997–2001) in industrial research in Hewlett-Packard Lab Israel and in Jigami, Michael took a research associate position at Stanford University from 2001 to 2003, working closely with Prof. Gene Golub (CS-Stanford), Prof. Peyman Milanfar (EE- UCSC) and Prof. David L. Donoho (Statistics-Stanford). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HP Labs
HP Labs is the exploratory and advanced research group for HP Inc. HP Labs' headquarters is in Palo Alto, California and the group has research and development facilities in Bristol, UK. The development of programmable desktop calculators, inkjet printing, and 3D graphics are credited to HP Labs researchers. HP Labs was established on March 3, 1966, by founders Bill Hewlett and David Packard, seeking to create an organization not bound by day-to-day business concerns. The labs have downsized dramatically; in August 2007, HP executives drastically diminished the number of projects, down from 150 to 30. As of 2018, HP Labs has just over 200 researchers, compared to earlier staffing levels of 500 researchers. With the Hewlett Packard Enterprise being spun off from Hewlett-Packard on November 1, 2015, and renamed to and HP Inc., the research lab also spun off Hewlett Packard Labs to Hewlett Packard Enterprise and HP Labs was kept for HP Inc. History As the Semiconductor Lab's fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yahoo! Native
Yahoo! Native (formerly known as Yahoo! Advertising, Yahoo! Search Marketing and Yahoo! Gemini) is a native "Pay per click" Internet advertising service provided by Yahoo. Yahoo began offering this service after acquiring Overture Services, Inc.'' The current offering of Yahoo Native launched in 2014 as Yahoo! Gemini. It handles advertising for both Yahoo and AOL properties, as well as other media outlets. History GoTo and Overture GoTo (not to be confused with Go.com or Go2Net) was an Idealab spin off and was the first company to successfully provide a pay-for-placement search service.GoTo Going Strong'', Danny Sullivan, The Search Engine Report, July 1, 1998 Jeff Pelline, CNET News.com, February 19, 1998''Who Will GoTo.com?'', Ken Glaser, OnlinePress.com, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year Of Birth Missing (living People)
A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons are generally recognized: spring, summer, autumn and winter. In tropical and subtropical regions, several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked. A calendar year is an approximation of the number of days of the Earth's orbital period, as counted in a given calendar. The Gregorian calendar, or modern calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, as do the Julian calendars. For the Gregorian calendar, the average length of the calendar year (the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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