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Luis Von Ahn
Luis von Ahn (; born 19 August 1978) is a German-Guatemalan entrepreneur and a consulting professor in the Computer Science Department at Carnegie Mellon University in Pittsburgh, Pennsylvania. He is known as one of the pioneers of crowdsourcing. He is the founder of the company reCAPTCHA, which was sold to Google in 2009, and the co-founder and CEO of Duolingo. Education and early life Luis von Ahn was born in and grew up in Guatemala City. Von Ahn grew up in a wealthy household with both of his parents working as physicians. He is a Guatemalan of German-Jewish descent. His mother was one of the first women in Guatemala to complete medical school, and decided to get pregnant with Von Ahn despite being single at age 42. He attended the American School of Guatemala, a private English-language school in Guatemala City, an experience he cites as a great privilege. When von Ahn was eight years old, his mother bought him a Commodore 64 computer, beginning his fascination with tech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wikimania 2015
Wikimania is the Wikimedia movement's annual conference, organized by volunteers and hosted by the Wikimedia Foundation. Topics of presentations and discussions include Wikimedia projects such as Wikipedia, other wikis, open-source software, free knowledge and free content, and social and technical aspects related to these topics. Since 2011, the winner of the Wikimedian of the Year award (known as the "Wikipedian of the Year" until 2017) has been announced at Wikimania. Overview Conferences 2005 Wikimania 2005, the first Wikimania conference, was held from 4 to 8 August 2005 at the ''Haus der Jugend'' in Frankfurt, Germany, attracting about 380 attendees. The week of the conference included four "Hacking Days", from 1 to 4 August, when some 25 developers gathered to work on code and discuss the technical aspects of MediaWiki and of running the Wikimedia projects. The main days of the conference, despite its billing as being "August 4–8", were Friday to Sunday of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American School Of Guatemala
The American School of Guatemala is one of several private K-12 college preparatory schools in Guatemala City, Guatemala. The American School of Guatemala is an independent, non profit, non-denominational, college preparatory institution offering an academic program modeled after the education practices and methodologies of the United States. It is founded on the principles of coeducational, bi-cultural (Guatemala-United States), and bilingual (Spanish-English) teaching. ASG is fully accredited in the U.S. by the New England Association of Colleges and Schools and is recognized by the Guatemalan Ministry of Education as a Laboratory School. As a member of the Del Valle Grupo Educativo, ASG is actively committed to the development of education in Guatemala. History In 1945 a group of parents established the school. On June 10 of that year the first classes began with levels Kindergarten through grade 5. There were 34 students, and first campus was a private residence in Zone 9. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Game With A Purpose
A human-based computation game or game with a purpose (GWAP) is a human-based computation technique of outsourcing steps within a computational process to humans in an entertaining way (gamification). Luis von Ahn first proposed the idea of "human algorithm games", or games with a purpose (GWAPs), in order to harness human time and energy for addressing problems that computers cannot yet tackle on their own. He believes that human intellect is an important resource and contribution to the enhancement of computer processing and human computer interaction. He argues that games constitute a general mechanism for using brainpower to solve open computational problems. In this technique, human brains are compared to processors in a distributed system, each performing a small task of a massive computation. However, humans require an incentive to become part of a collective computation. Online games are used as a means to encourage participation in the process. The tasks presented in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human-based Computation
Human-based computation (HBC), human-assisted computation, ubiquitous human computing or distributed thinking (by analogy to distributed computing) is a computer science technique in which a machine performs its function by outsourcing certain steps to humans, usually as microwork. This approach uses differences in abilities and alternative costs between humans and computer agents to achieve symbiotic human–computer interaction. For computationally difficult tasks such as image recognition, human-based computation plays a central role in training Deep Learning-based Artificial Intelligence systems. In this case, human-based computation has been referred to as human-aided artificial intelligence. In traditional computation, a human employs a computer to solve a problem; a human provides a formalized problem description and an algorithm to a computer, and receives a solution to interpret. Human-based computation frequently reverses the roles; the computer asks a person or a large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NOVA ScienceNOW
''Nova ScienceNow'' (styled ''NOVΛ scienceNOW'') is a spinoff of the long-running and venerable PBS science program ''Nova''. Premiering on January 25, 2005, the series was originally hosted by Robert Krulwich, who described it as an experiment in coverage of "breaking science, science that's right out of the lab, science that sometimes bumps up against politics, art, culture". At the beginning of season two, Neil deGrasse Tyson replaced Krulwich as the show's host. Tyson announced he would leave the show and was replaced by David Pogue in season 6. The show was originally intended to return with more new episodes in 2015. Production Unlike the parent program ''Nova'', ''Nova ScienceNow'' has a whimsical production style. It is not unusual for the show to explain topics as arcane as RNA interference using cartoons, or a solution to a two-thousand-year-old math problem related in song. Whereas ''Nova'' covered a single seamless subject in each hour-long episode, ''NOVA science ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discovery Channel
Discovery Channel (known as The Discovery Channel from 1985 to 1995, and often referred to as simply Discovery) is an American cable channel owned by Warner Bros. Discovery, a publicly traded company run by CEO David Zaslav. , Discovery Channel was the third most widely distributed subscription channel in the United States, behind now-sibling channel TBS and The Weather Channel; it is available in 409 million households worldwide, through its U.S. flagship channel and its various owned or licensed television channels internationally. It initially provided documentary television programming focused primarily on popular science, technology, and history, but by the 2010s had expanded into reality television and pseudo-scientific entertainment. , Discovery Channel is available to approximately 88,589,000 pay television households in the United States. History John Hendricks founded the channel and its parent company, Cable Educational Network Inc., in 1982. Several investo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USA Today
''USA Today'' (stylized in all uppercase) is an American daily middle-market newspaper and news broadcasting company. Founded by Al Neuharth on September 15, 1982, the newspaper operates from Gannett's corporate headquarters in Tysons, Virginia. Its newspaper is printed at 37 sites across the United States and at five additional sites internationally. The paper's dynamic design influenced the style of local, regional, and national newspapers worldwide through its use of concise reports, colorized images, Infographic, informational graphics, and inclusion of popular culture stories, among other distinct features. With an average print circulation of 159,233 as of 2022, a digital-only subscriber base of 504,000 as of 2019, and an approximate daily readership of 2.6 million, ''USA Today'' is ranked as the first by circulation on the list of newspapers in the United States. It has been shown to maintain a generally center-left audience, in regards to political persuasion. ''US ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital subscribers. It also is a producer of popular podcasts such as '' The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national " newspaper of record". For print it is ranked 18th in the world by circulation and 3rd in the U.S. The paper is owned by the New York Times Company, which is publicly traded. It has been governed by the Sulzberger family since 1896, through a dual-class share structure after its shares became publicly traded. A. G. Sulzberger, the paper's publisher and the company's chairman, is the fifth generation of the family to head the pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steganography
Steganography ( ) is the practice of representing information within another message or physical object, in such a manner that the presence of the information is not evident to human inspection. In computing/electronic contexts, a computer file, message, image, or video is concealed within another file, message, image, or video. The word ''steganography'' comes from Greek ''steganographia'', which combines the words ''steganós'' (), meaning "covered or concealed", and ''-graphia'' () meaning "writing". The first recorded use of the term was in 1499 by Johannes Trithemius in his '' Steganographia'', a treatise on cryptography and steganography, disguised as a book on magic. Generally, the hidden messages appear to be (or to be part of) something else: images, articles, shopping lists, or some other cover text. For example, the hidden message may be in invisible ink between the visible lines of a private letter. Some implementations of steganography that lack a shared secret are f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Langford (computer Scientist)
John Langford (born January 2, 1975) is a computer scientist working in machine learning and learning theory, a field that he says "is shifting from an academic discipline to an industrial tool". He is well known for work on the Isomap embedding algorithm, CAPTCHA challenges, Cover Trees for nearest neighbor search, Contextual Bandits (which he coined) for reinforcement learning applications, and learning reductions. John is the author of the blogbr>hunch.netand the principal developer of Vowpal Wabbit. He works at Microsoft Research New York, of which he was one of the founding members, and was previously affiliated with Yahoo! Research, Toyota Technological Institute at Chicago, and IBM's Watson Research Center. He studied Physics and Computer Science at the California Institute of Technology, earning a double bachelor's degree in 1997, and he received his Ph.D. in Computer Science from Carnegie Mellon University Carnegie Mellon University (CMU) is a private researc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptography
Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or ''-logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, information security, electrical engineering, digital signal processing, physics, and others. Core concepts related to information security ( data confidentiality, data integrity, authentication, and non-repudiation) are also central to cryptography. Practical applications of cryptography include electronic commerce, chip-based payment cards, digital currencies, computer passwords, and military communications. Cryptography prior to the modern age was effectively synonymo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Summa Cum Laude
Latin honors are a system of Latin phrases used in some colleges and universities to indicate the level of distinction with which an academic degree has been earned. The system is primarily used in the United States. It is also used in some Southeastern Asian countries with European colonial history, such as Indonesia and the Philippines, although sometimes translations of these phrases are used instead of the Latin originals. The honors distinction should not be confused with the honors degrees offered in some countries, or with honorary degrees. The system usually has three levels of honor: ''cum laude'', ''magna cum laude'', and ''summa cum laude''. Generally, a college or university's regulations set out definite criteria a student must meet to obtain a given honor. For example, the student might be required to achieve a specific grade point average, submit an honors thesis for evaluation, be part of an honors program, or graduate early. Each school sets its own standards. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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