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Cranfield Experiments
The Cranfield experiments were a series of experimental studies in information retrieval conducted by Cyril W. Cleverdon at the College of Aeronautics, today known as Cranfield University, in the 1960s to evaluate the efficiency of indexing systems. The experiments were broken into two main phases, neither of which was computerized. The entire collection of abstracts, resulting indexes and results were later distributed in electronic format and were widely used for decades. In the first series of experiments, several existing indexing methods were compared to test their efficiency. The queries were generated by the authors of the papers in the collection and then translated into index lookups by experts in those systems. In this series, one method went from least efficient to most efficient after making minor changes to the arrangement of the way the data was recorded on the index cards. The conclusion appeared to be that the underlying methodology seemed less important than spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Information Retrieval
Information retrieval (IR) in computing and information science is the process of obtaining information system resources that are relevant to an information need from a collection of those resources. Searches can be based on full-text or other content-based indexing. Information retrieval is the science of searching for information in a document, searching for documents themselves, and also searching for the metadata that describes data, and for databases of texts, images or sounds. Automated information retrieval systems are used to reduce what has been called information overload. An IR system is a software system that provides access to books, journals and other documents; stores and manages those documents. Web search engines are the most visible IR applications. Overview An information retrieval process begins when a user or searcher enters a query into the system. Queries are formal statements of information needs, for example search strings in web search engines. In inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortimer Taube
Mortimer Taube (December 6, 1910 – September 3, 1965) was an American librarian. He is on the list of the 100 most important leaders in Library and Information Science of the 20th century. He was important to the Library Science field because he invented Coordinate Indexing, which uses "uniterms" in the context of cataloging. It is the forerunner to computer based searches. In the early 1950s he started his own company, Documentation, Inc. with Gerald J. Sophar. Previously he worked at such institutions as the Library of Congress, the Department of Defense, and the Atomic Energy Commission. American Libraries calls him "an innovator and inventor, as well as scholar and savvy businessman." Current Biography called him the " Dewey of mid-twentieth Librarianship." Mortimer Taube was a very active man with varying interests such as tennis, philosophy, sailing, music, and collecting paintings. Education and early career Mortimer Taube was born in Jersey City, New Jersey on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Main Memory
Computer data storage is a technology consisting of computer components and recording media that are used to retain digital data. It is a core function and fundamental component of computers. The central processing unit (CPU) of a computer is what manipulates data by performing computations. In practice, almost all computers use a storage hierarchy, which puts fast but expensive and small storage options close to the CPU and slower but less expensive and larger options further away. Generally, the fast volatile technologies (which lose data when off power) are referred to as "memory", while slower persistent technologies are referred to as "storage". Even the first computer designs, Charles Babbage's Analytical Engine and Percy Ludgate's Analytical Machine, clearly distinguished between processing and memory (Babbage stored numbers as rotations of gears, while Ludgate stored numbers as displacements of rods in shuttles). This distinction was extended in the Von Neumann arch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kilobyte
The kilobyte is a multiple of the unit byte for digital information. The International System of Units (SI) defines the prefix ''kilo'' as 1000 (103); per this definition, one kilobyte is 1000 bytes.International Standard IEC 80000-13 Quantities and Units – Part 13: Information science and technology, International Electrotechnical Commission (2008). The internationally recommended unit symbol for the kilobyte is kB. In some areas of information technology, particularly in reference to solid-state memory capacity, ''kilobyte'' instead typically refers to 1024 (210) bytes. This arises from the prevalence of sizes that are powers of two in modern digital memory architectures, coupled with the accident that 210 differs from 103 by less than 2.5%. A kibibyte is defined by Clause 4 of IEC 80000-13 as 1024 bytes. Definitions and usage Base 10 (1000 bytes) In the International System of Units (SI) the prefix ''kilo'' means 1000 (103); therefore, one kilobyte is 1000 bytes. The u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Don R
Don, don or DON and variants may refer to: Places *County Donegal, Ireland, Chapman code DON *Don (river), a river in European Russia *Don River (other), several other rivers with the name *Don, Benin, a town in Benin *Don, Dang, a village and hill station in Dang district, Gujarat, India *Don, Nord, a ''commune'' of the Nord ''département'' in northern France *Don, Tasmania, a small village on the Don River, located just outside Devonport, Tasmania *Don, Trentino, a commune in Trentino, Italy * Don, West Virginia, a community in the United States *Don Republic, a temporary state in 1918–1920 *Don Jail, a jail in Toronto, Canada People Role or title *Don (honorific), a Spanish, Portuguese, and Italian title, given as a mark of respect *Don, a crime boss, especially in the Mafia , ''Don Konisshi'' (コニッシー) *Don, a resident assistant at universities in Canada and the U.S. *University don, in British and Irish universities, especially at Oxford, Cambridge, St An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Answer (response)
A question is an utterance which serves as a request for information. Questions are sometimes distinguished from interrogatives, which are the grammatical forms typically used to express them. Rhetorical questions, for instance, are interrogative in form but may not be considered bona fide questions, as they are not expected to be answered. Questions come in a number of varieties. ''Polar questions'' are those such as the English example "Is this a polar question?", which can be answered with "yes" or "no". ''Alternative questions'' such as "Is this a polar question, or an alternative question?" present a list of possibilities to choose from. '' Open questions'' such as "What kind of question is this?" allow many possible resolutions. Questions are widely studied in linguistics and philosophy of language. In the subfield of pragmatics, questions are regarded as illocutionary acts which raise an issue to be resolved in discourse. In approaches to formal semantics such as altern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Question
A question is an utterance which serves as a request for information. Questions are sometimes distinguished from interrogatives, which are the grammar, grammatical forms typically used to express them. Rhetorical questions, for instance, are interrogative in form but may not be considered wiktionary:bona fide, bona fide questions, as they are not expected to be answered. Questions come in a number of varieties. ''Polar questions'' are those such as the English language, English example "Is this a polar question?", which can be answered with "yes" or "no". ''Alternative questions'' such as "Is this a polar question, or an alternative question?" present a list of possibilities to choose from. ''Open-ended question, Open questions'' such as "What kind of question is this?" allow many possible resolutions. Questions are widely studied in linguistics and philosophy of language. In the subfield of pragmatics, questions are regarded as illocutionary acts which raise an issue to be resol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chartered Institute Of Library And Information Professionals
The Chartered Institute of Library and Information Professionals, since 2017 branded CILIP: The library and information association (pronounced ), is a professional body for librarians, information specialists and knowledge managers in the United Kingdom. It was established in 2002 as a merger of the Library Association (LA, sometimes LAUK) and the Institute of Information Scientists (IIS). CILIP in Scotland (CILIPS) is an independent organisation which operates in Scotland in affiliation with CILIP and delivers services via a service level agreement. CILIP's 2020 goal is to "put information and library skills and professional values at the heart of a democratic, equal and prosperous society". History CILIP was formed in 2002 by the merger of the Library Association (abbreviated as LA or sometimes LAUK) – founded in 1877 as a result of the first International Conference of Librarians and awarded a Royal Charter in 1898 – and the Institute of Information Scientists (IIS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jason Farradane
Jason Farradane, born Jason Lewkowitsch (29 September 1906 – 27 June 1989) was a British librarian of Polish descent. Life The son of the chemical engineer Julius Lewkowitsch, Farradane graduated in chemistry in 1929 at what is now Imperial College London and started work in industry as a chemist and documentalist. After working in research at the Ministry of Supply and the Admiralty during World War II, he first made an impact with a paper on the scientific approach to documentation at a Royal Society Scientific Information Conference in 1948. Farradane is accredited for first use of the term information science, in which he recognized library science and information science as disparate, yet joint areas of study. He was instrumental in establishing the Institute of Information Scientists in 1958 and the first academic courses in information science in 1963, at what eventually became City University, London and where he became Director of the Centre for Information Science in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Gear
Landing gear is the undercarriage of an aircraft or spacecraft that is used for takeoff or landing. For aircraft it is generally needed for both. It was also formerly called ''alighting gear'' by some manufacturers, such as the Glenn L. Martin Company. For aircraft, Stinton makes the terminology distinction ''undercarriage (British) = landing gear (US)''. For aircraft, the landing gear supports the craft when it is not flying, allowing it to take off, land, and taxi without damage. Wheeled landing gear is the most common, with skis or floats needed to operate from snow/ice/water and skids for vertical operation on land. Faster aircraft have retractable undercarriages, which fold away during flight to reduce drag. Some unusual landing gear have been evaluated experimentally. These include: no landing gear (to save weight), made possible by operating from a catapult cradle and flexible landing deck: air cushion (to enable operation over a wide range of ground obstacles and wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Language Query
Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena. The word ''nature'' is borrowed from the Old French ''nature'' and is derived from the Latin word ''natura'', or "essential qualities, innate disposition", and in ancient times, literally meant "birth". In ancient philosophy, ''natura'' is mostly used as the Latin translation of the Greek word ''physis'' (φύσις), which originally related to the intrinsic characteristics of plants, animals, and other features of the world to develop of their own accord. The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word φύσις by pre-Socr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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