All about Search – Semantic Computing (SC)

July 27th, 2010

Semantic Computing (SC) is defined as “Computing with (machine processable) Descriptions of Content and Intentions.” It brings together those disciplines concerned with connecting the (often vaguely formulated) intentions of humans with computational content that includes, but is not limited to, structured and semi-structured data, multimedia data, text, programs, services and, even, network behavior.

Semantic Computing covers subject areas including, but are not limited to, the following:

* Semantic Analysis
o Natural language processing
o Image and video analysis
o Audio and speech analysis
o Analysis of structured and semi-structured data
o Analysis of behaviors of software, services and networks
o Analysis of social networks
o Data ad web mining
o Description languages

* Semantic Integration
o Database schema integration
o Ontology integration
o Interoperability and service integration

* Semantic Applications
o Semantic programming languages and software engineering
o Semantic system design and synthesis
o Search engines
o Question answering
o Semantic web services
o Multimedia databases
o Context-aware networks of sensors, devices and applications
o Semantic GIS systems
o Human centered communications
o Semantic trusted computing

* Semantic Interface
o Natural language interface
o Multi-modal interface

Educational Testing Service (ETS)

July 27th, 2010

Educational Testing Service (or ETS), founded in 1947, is the world’s largest private nonprofit educational testing and assessment organization. It is presently headquartered near Princeton, New Jersey, in the United States.

ETS develops various standardized tests primarily in the United States for K–12 and higher education, and it also administers international tests including the TOEFL (Test of English as a Foreign Language), TOEIC (Test of English for International Communication), GRE (Graduate Record Examination) General and Subject Tests, and The Praxis Series assessments — in more than 180 countries, and at over 9,000 locations worldwide. Many of the assessments it develops are associated with entry to US tertiary (undergraduate) and quaternary education (graduate) institutions, but it also develops K–12 statewide assessments used for accountability testing in many states, including California, Texas, Tennessee and Virginia. In total, ETS annually administers 20 million exams in the U.S. and in 180 other countries.
Contents

* 1 History
* 2 Scientific Contributions
* 3 Current status
* 4 Criticism
* 5 Tests administered
* 6 See also
* 7 References
* 8 Further reading
* 9 External links

[edit] History

ETS is a U.S.-registered 501(c)(3) non-profit organization created in 1947 by three other nonprofit educational institutions: the American Council on Education (ACE), The Carnegie Foundation for the Advancement of Teaching, and The College Entrance Examination Board.[1] ETS was formed in 1947 to take over the testing activities of its founders (whose organizations were not well suited to running operational assessment programs), and to pursue research intended to advance educational measurement and education.[2][3] Among other things, ACE gave to the new organization the Cooperative Test Service and the National Teachers Examination; Carnegie gave the GRE; and the College Board turned over to ETS the operation (but not ownership) of the SAT.
[edit] Scientific Contributions

In keeping with the purposes for which it was established, ETS developed a program of research that covered not only measurement and education but also such related areas as statistics, educational evaluation, and psychology, particularly cognitive, developmental, personality, and social psychology. This broad-based research program attracted many individuals who distinguished themselves in their fields, often while at ETS but also in subsequent professorial positions. Among the more influential scientists have been Harold Gulliksen (whose book, “Theory of Mental Tests,” helped codify classical test theory);[4][5] Frederic Lord (Item Response Theory); Samuel Messick,[6] (modern validity theory); Robert Linn (currently known for testing and educational policy); Norman Frederiksen (performance assessment); Ledyard Tucker (test analysis, including inventing the “Angoff Method” of standard setting); Donald Rubin (missing data and causal modeling from observational data); Karl Joreskog (structural equation modeling and confirmatory factor analysis); Paul Holland (differential item functioning, test equating, causal modeling); John Carroll (language testing and cognitive psychology); Michael Lewis (infant cognitive, social, and emotional development); Irving Sigel (children’s cognitive development);[7] Herman Witkin (cognitive and learning styles); K. Patricia Cross (adult education); Samuel Ball (an evaluation researcher who documented the positive educational effects of Sesame Street); and David Rosenhan (known for the Rosenhan experiment, which challenged the validity of psychiatric diagnosis).

Members of the ETS staff have been among the presidents of the National Council on Measurement in Education (NCME); the Psychometric Society; the Measurement and Evaluation Division of the American Educational Research Association (AERA); the Evaluation, Measurement and Statistics Division of the American Psychological Association (APA); the APA Developmental Psychology Division; and the Jean Piaget Society. They have been among the executive editors of the Journal of Educational Measurement, Journal of Educational and Behavioral Statistics, Educational Evaluation and Policy Analysis, Journal of Educational Psychology, Journal of Applied Developmental Psychology, and Discourse Processes. Major citations have included the APA Distinguished Contributions to Knowledge Award (Norman Frederiksen, 1984), the APA Distinguished Scientific Contribution Award (Frederic Lord, 1988); the AERA E.F. Lindquist Award (William Turnbull, 1981; Frederic Lord, 1988; Samuel Messick, 1994; Paul Holland, 2000; Wendy Yen, 2008); the NCME Career Contributions to Educational Measurement Award (Frederic Lord, 1990; Paul Holland, 2004; Neil Dorans, 2010); and the Jean Piaget Society’s Lifetime Achievement Award (Irving Sigel, 2002); among many other awards.

The high caliber of scientific staff allowed ETS to produce both new knowledge and methodology, especially in measurement and statistics, much of which has been taken up by assessment organizations around the world. Among the key scientific contributions were:

* co-invention of Item Response Theory, an integrated framework for asking and answering a variety of practical problems related to the design and analysis of tests;[8][9][10]

* creation of an approach and software for structural equation modeling and confirmatory factor analysis (LISREL), used throughout the social sciences to test theoretical relationships among variables;[11]

* seminal contributions to modern validity theory, including the idea that validity was a unitary concept and that the evaluation of score meaning requires consideration of the consequences of test use as those consequences may imply functional problems with the test;[12]

* development of widely used approaches to data analysis when there are missing data;[13]

* generation of approaches to causal modeling from observational data;[14][15]

* invention of the In-Basket Test (used throughout the world to assess applicants for managerial jobs in a wide variety of industries);[16]

* development of methods for detecting test unfairness, including invention of the Standardization approach to Differential Item Functioning (DIF) and application of the Mantel-Haenszel method;[17]

* creation of the holistic-scoring approach to writing assessment, a means of rapidly and reliably judging the quality of essay text, which allowed direct writing assessment to become a more affordable alternative to multiple-choice questions for large-scale testing programs;[18][19]

[edit] Current status

ETS’ international headquarters is located on an 376-acre (1.52 km2) campus outside of Princeton, New Jersey in Lawrence Township, Mercer County, New Jersey[20][21][22]; processing, shipping, customer service and test security is in nearby Ewing. ETS also has a major office in San Antonio, TX, which houses its K–12 Assessment Programs division, and smaller offices in Philadelphia, PA, Washington, DC, Hato Rey, PR, and Concord, Sacramento, and Monterey, CA.[23] Overseas office locations, all of which are associated with for-profit subsidiaries that are wholly owned by ETS, include Amsterdam (ETS Global BV headquarters), London (ETS Global BV), Seoul (ETS Global BV), Paris (ETS Global BV), Amman (ETS Global BV), Warsaw (ETS Global BV), Beijing (ETS China), and Kingston, Ontario (ETS Canada). Not including its for-profit subsidiaries, ETS employs about 2,700 individuals,[24] including 240 with doctorates and an additional 350 others with “higher degrees.”

To help support its nonprofit educational mission, ETS, like many other nonprofits, conducts business activities that are unrelated to that mission (e.g., employment testing). Under US tax law, these activities may be conducted (within limits) by the nonprofit itself, or by for-profit subsidiaries.[22] Most of the “off-mission” work conducted by ETS is carried out by such wholly owned, for-profit subsidiaries as Prometric,[25] which delivers tests for hundreds of third-party clients, ETS Global BV, which contains much of the international operations of the company, ETS China, and ETS Canada.

About 25% of the work carried out by ETS is contracted by the College Board, a private, nonprofit membership association of universities, colleges, school districts, and secondary schools. The most popular of the College Board’s tests is the SAT, taken by more than 3 million students annually. ETS also develops and administers The College Board’s Preliminary SAT/National Merit Scholarship Qualifying Test(PSAT/NMSQT) and the Advanced Placement program, which is widely used in US high schools for advanced course credit.

Since 1983, ETS has conducted the National Assessment of Educational Progress (NAEP), known as the “Nation’s Report Card,” under contract to the US National Center for Education Statistics. NAEP is the only nationally representative and continuing assessment of what US students know and can do. ETS is currently responsible for coordination among the nine NAEP Alliance contractors, for item development, and for design, data analysis, and reporting.[26]

In addition to the contract work that ETS undertakes for nonprofit and government entities like the College Board, the National Center for Education Statistics, and state education departments, the organization offers its own tests. These tests include the Graduate Record Examinations (GRE) (for graduate and professional school admissions), the Test of English as a Foreign Language (TOEFL) (for post-secondary admissions), the Test of English for International Communication (TOEIC) (for use by business and industry), and the Praxis Series (for teacher licensure and certification).[27]

In England and Wales ETS Europe, a unit of the ETS Global for-profit subsidiary, was contracted to mark and process the National Curriculum assessments on behalf of the government. ETS Global took over this role in 2008 from Edexcel, a subsidiary of Pearson, which had encountered significant and repeated problems in carrying out the marking and processing contract.[28][29][30] As was the case for Edexcel, The first year of ETS Global’s operation was struck by a number of problems, including the late arrival of scripts to examiners, a database of student entries being unavailable,[31] and countrywide reports of problems with the marking of the papers. The opposition Conservative party criticized the awarding of the contracts to ETS, and produced a dossier listing previous problems with ETS’s service.[32] The ETS contract with the QCA was terminated in August 2008, with an agreement to pay back £19.5m and cancel invoices worth £4.6m.[33] Subsequently, the contract for National Curriculum assessment marking and processing was again awarded to Edexcel. Like the two prior contracts, the Edexcel contract has encountered significant quality problems[34] and the tests themselves, the focus of longstanding controversy in the English education community and among the public, have been subjected to a massive boycott by schools.[35]

In 2009, ETS released the My Credentials Vault Service with Interfolio, Inc to “simplify the entire letter of recommendation process”.[36]
[edit] Criticism

ETS has been criticized for being a “highly competitive business operation that is as much multinational monopoly as nonprofit institution”.[37] Due to its legal status as a non-profit organization, ETS is exempt from paying federal corporate income tax on many, but not all, of its operations. Furthermore, it does not need to report financial information to the Securities and Exchange Commission, though it does annually report detailed financial information to the IRS on Form 990, which is publicly available.[38]

In response to growing criticism of its monopolistic power, New York state passed the Educational Testing Act, a disclosure law which required ETS to make available certain test questions and graded answer sheets to students.[39]

Problems administering England’s national tests in 2008 by ETS Europe were the subject of thousands of complaints recorded by the Times Educational Supplement.[40] Their operations were also described as a “shambles” in the UK Parliament, where a financial penalty was called for.[41] Complaints included papers not being marked properly, or not being marked at all[42] and papers being sent to the wrong schools or lost completely.[43] It has even been suggested that the quality of service is so poor that the Department for Children, Schools and Families (formerly the Department for Education and Skills) might not be able to publish the 2008 league tables of school performance.[44] However, the contract was ended by “mutual consent”. [1] The UK government asked Lord Sutherland to conduct an inquiry into the failure of the 2008 tests. The report included in its main findings:

• primary responsibility for this summer’s delivery failure rests with ETS Global BV, which won the public contract to deliver the tests;
• ETS’s capacity to deliver the contract proved to be insufficient. A lack of comprehensive planning and testing by ETS of its systems and processes was a key factor in the delivery failure;

In 1983, students of James A. Garfield High School in East Los Angeles, California achieved unexpectedly high exam results on the ETS Advanced Placement Exam. ETS implied the that the students must have cheated to obtain such results. The students were required to prove their abilities and innocence by taking a more difficult second exam.[45]

Americans for Educational Testing Reform (AETR) claims that ETS is violating its non-profit status through excessive profits, executive compensation, and governing board member pay (which the IRS specifically advises against[46]). AETR further claims that ETS is acting unethically by selling test preparation materials, directly lobbying legislators and government officials, and refusing to acknowledge test-taker rights. It also criticises ETS for forcing GRE test-takers to participate in research experiments during the actual exam.[47]
[edit] Tests administered

* Graduate Record Examination (GRE)
* SAT (formerly Scholastic Aptitude Test)
* Preliminary SAT/National Merit Scholarship Qualifying Test (PSAT/NMSQT)
* College Level Examination Program (CLEP)
* Test Of English as a Foreign Language (TOEFL)
* Test Of English for International Communications (TOEIC)
* Test de français international (TFI)
* California High School Exit Exam (CAHSEE)
* the Praxis test (successor to the NTE)
* the National Assessment of Educational Progress (NAEP)

Most Successful Businessman in the World – Pierre Omidyar

July 25th, 2010

As an entrepreneur and innovator, Pierre guides Omidyar Network with his strategic vision, values, and fresh approach to the field of philanthropy.

Pierre’s work at Omidyar Network is greatly influenced by his beliefs in the inherent potential of all people and the transformative power of markets. These beliefs inspired him to found eBay in 1995. Starting from the premise that people are basically good, Pierre created a platform that enabled people to connect over shared interests and build individual businesses. The keys to eBay’s marketplace were transparency and accessibility — everyone had equal access to information, opportunity, and tools to pursue their goals. Today, eBay enables more than 80 million buyers and sellers worldwide to connect and prosper. Each individual has built a reputation through past transactions that eases concerns about doing business sight unseen and often turns strangers into friends.

After eBay became a public company in 1998, Pierre and his wife, Pam, co-founded the Omidyar Foundation to support nonprofits. Simultaneously, eBay’s vast scale and accelerating social impact were demonstrating that business could also be an effective tool for making the world a better place. In response, they broadened their scope in 2004 to form a new entity, Omidyar Network, to make for-profit company investments as well as nonprofit organization grants. Like eBay, Omidyar Network harnesses the power of markets to enable people to tap their true potential. By supporting innovative, market-based approaches, Omidyar Network creates opportunity for individuals to connect with others, discover their power to make a difference in the world and truly improve their lives.

As an extension of Omidyar Network’s activities in microfinance, Pierre and Pam gave $100 million to Tufts University to create the Omidyar-Tufts Microfinance Fund. Their endowment, the single largest in the history of Tufts, aims to accelerate the growth of the microfinance industry, while generating income to support university programs. Pierre and Pam also co-founded the Ulupono Initiative, a Hawaii-focused social investment organization that makes grants and investments to improve the quality of life for island residents through more renewable energy, more locally produced food, and reduced waste.

Before starting eBay, Pierre co-founded Ink Development Corp., later renamed eShop and acquired by Microsoft. Upon receiving his BS in computer science from Tufts, Pierre worked as a consumer software engineer at Claris, a subsidiary of Apple Computer. Today, Pierre serves as a trustee of Tufts University, Punahou School, and Santa Fe Institute, a commissioner of the President’s Commission on White House Fellowships, and as chairman of eBay.

Most Successful Businessman in the World – Jeff Bezos

July 25th, 2010

Jeff Bezos founded Amazon.com in 1994 as an online bookstore. As CEO, he has built it into the largest retailer on the Web, selling everything from groceries to electronics and shoes. Amazon consistently succeeds with risky new ventures, which Bezos credits to tenacity and an obsession with customer needs. U.S. News’s David LaGesse asked Bezos about leading an Internet pioneer. Excerpts:
Click here to find out more!

My own view is that every company requires a long-term view. If you’re going to take a long-term orientation, you have to be willing to stay heads down and ignore a wide array of critics, even well-meaning critics. If you don’t have a willingness to be misunderstood for a long period of time, then you can’t have a long-term orientation. Because we have done it many times and have come out the other side, we have enough internal stories that we can tell ourselves. While we’re crossing the desert, we may be thirsty, but we sincerely believe there’s an oasis on the other side.

You’re also going to have to have a willingness to repeatedly fail if you’re going to experiment. For a certain kind of person, that is a very exciting, very motivating culture. So, we attract those kinds of people.

Cultures, for better or worse, are very stable. When new people come into the company, some may self-select out of it. Others opt in. Over time, you build up this momentum around a culture that is self-perpetuating.

We wanted to have a customer-focused culture. We consciously tried to get that. Part of a culture is also who the early employees are. Part of company culture is path-dependent—it’s the lessons you learn along the way. One piece of the culture here that is true of my personality is that I have never believed that you couldn’t be serious and have fun at the same time. It’s perhaps most important to have fun when stumbling. It is harder.

A different way to organize your energies that can be very effective is to be competitor-focused. If you’re competitor-focused, you have to wait until there is a competitor doing something. Being customer-focused allows you to be more pioneering. We have found that, on the Internet, “me too” strategies seem not to work very well.

There are many decisions that we make that we can make with math. For those kinds of problems, if you used gut intuition, that would be foolish. But a lot of the decisions that you have to make around consumers are not that kind of thing. You can’t put into a spreadsheet how people are going to behave around a new product.

Show Business

July 23rd, 2010

You might be happy as actor
But you are being directed by director

You might be happy as director
But you are being produced by producer

You might be happy as producer
But you are being judged by audience

Show is business
Business is show