Document Retrieval Index

Author by : Anonim
Languange : en
Publisher by : Unknown
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Document Retrieval Index

Author by : Anonim
Languange : en
Publisher by : Unknown
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Document Retrieval Index

Author by : Anonim
Languange : en
Publisher by : Unknown
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Document Retrieval Index

Author by : Anonim
Languange : en
Publisher by : Unknown
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Automatic Indexing And Abstracting Of Document Texts

Author by : Marie-Francine Moens
Languange : en
Publisher by : Springer Science & Business Media
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Description : Automatic Indexing and Abstracting of Document Texts summarizes the latest techniques of automatic indexing and abstracting, and the results of their application. It also places the techniques in the context of the study of text, manual indexing and abstracting, and the use of the indexing descriptions and abstracts in systems that select documents or information from large collections. Important sections of the book consider the development of new techniques for indexing and abstracting. The techniques involve the following: using text grammars, learning of the themes of the texts including the identification of representative sentences or paragraphs by means of adequate cluster algorithms, and learning of classification patterns of texts. In addition, the book is an attempt to illuminate new avenues for future research. Automatic Indexing and Abstracting of Document Texts is an excellent reference for researchers and professionals working in the field of content management and information retrieval.


Document Retrieval Index

Author by : Anonim
Languange : en
Publisher by : Unknown
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Folksonomies

Author by : Isabella Peters
Languange : en
Publisher by : Walter de Gruyter
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Description : Collaborative information services on Web 2.0 are used by Internet users not only to produce digital information resources, but also to furnish the contents of the resources with their own keywords, so-called tags. Whilst doing so the user is not required to comply with rules, as is necessary with a library catalogue. The amount of user-generated tags in a collaborative information service is referred to as folksonomy. Folksonomies allow users to relocate their own resources and to search for other resources. This book deals with collaborative information services and folksonomies both as a method of representing knowledge and a tool for information retrieval.


Information Storage And Retrieval Systems

Author by : Gerald J. Kowalski
Languange : en
Publisher by : Springer Science & Business Media
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Description : Chapter 1 places into perspective a total Information Storage and Retrieval System. This perspective introduces new challenges to the problems that need to be theoretically addressed and commercially implemented. Ten years ago commercial implementation of the algorithms being developed was not realistic, allowing theoreticians to limit their focus to very specific areas. Bounding a problem is still essential in deriving theoretical results. But the commercialization and insertion of this technology into systems like the Internet that are widely being used changes the way problems are bounded. From a theoretical perspective, efficient scalability of algorithms to systems with gigabytes and terabytes of data, operating with minimal user search statement information, and making maximum use of all functional aspects of an information system need to be considered. The dissemination systems using persistent indexes or mail files to modify ranking algorithms and combining the search of structured information fields and free text into a consolidated weighted output are examples of potential new areas of investigation. The best way for the theoretician or the commercial developer to understand the importance of problems to be solved is to place them in the context of a total vision of a complete system. Understanding the differences between Digital Libraries and Information Retrieval Systems will add an additional dimension to the potential future development of systems. The collaborative aspects of digital libraries can be viewed as a new source of information that dynamically could interact with information retrieval techniques.


Ncjrs Dri

Author by : Anonim
Languange : en
Publisher by : Unknown
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Ncjrs Dri

Author by : Anonim
Languange : en
Publisher by : Unknown
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The Scan Column Index

Author by : John O'Connor
Languange : en
Publisher by : Unknown
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Total Read : 74
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Description : The book-form index requires no searching machine, and the coordinate searching can be done by a clerical person. Each document is entered at just one place, and the documents can be in almost any order. A document entry consists of a single (or multi- ) character abbreviation for each term the document possesses, and a document identification. The document identification may be anything from a serial number to a brief abstract; micro-reduced document identifactions are also discussed.


Document Retrieval Index Dri

Author by : National Criminal Justice Reference Service (U.S.)
Languange : en
Publisher by : Unknown
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Information Retrieval

Author by : Stefan Büttcher
Languange : en
Publisher by : MIT Press
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Description : An introduction to information retrieval, the foundation for modern search engines, that emphasizes implementation and experimentation.


The Modelling And Retrieval Of Documents Using Index Expressions

Author by : Peter David Bruza
Languange : en
Publisher by : Unknown
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Description : Abstract: "In this paper we introduce Index Expressions as a means for modelling document content. From an index expression the the [sic] Power Index Expression can be derived, which is a powerful instrument for information retrieval. We describe the characterization of documents in the style of formal logic. The content of a document is then modelled by a set of axioms, of which the document is a model. Relating a document to a query is done by proving the query from the axioms of that document. We introduce three rules of inference. If such a proof is not possible, the relevance of the document for the query is derived by plausible deduction. We introduce two inference rules for plausible deduction."


Document Retrieval Index

Author by : Anonim
Languange : en
Publisher by : Unknown
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Total Read : 52
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Information Retrieval Computational And Theoretical Aspects

Author by : H. S. Heaps
Languange : en
Publisher by : New York : Academic Press
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Description : General concepts; Document data bases for computer search; Question logic and format; Data structures for storage and retrieval; Structure of search programs; Vocabulary characteristics of document data bases; Information theory considerations; Coding and compression of data bases; Example of design of a document retrieval system; Document indexing and term associations; Automatic question modification; Automatic document classification; Concluding remarks.


Document Retrieval Index

Author by : Anonim
Languange : en
Publisher by : Unknown
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Total Read : 44
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Concepts Of Information Retrieval

Author by : Miranda Lee Pao
Languange : en
Publisher by : Englewood, Colo. : Libraries Unlimited
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Introduction To Modern Information Retrieval

Author by : Gobinda G. Chowdhury
Languange : en
Publisher by : Facet Publishing
Format Available : PDF, ePub, Mobi
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Description : An information retrieval (IR) system is designed to analyse, process and store sources of information and retrieve those that match a particular user's requirements. A bewildering range of techniques is now available to the information professional attempting to successfully retrieve information. It is recognized that today's information professionals need to concentrate their efforts on learning the techniques of computerized IR. However, it is this book's contention that it also benefits them to learn the theory, techniques and tools that constitute the traditional approaches to the organization and processing of information. In fact much of this knowledge may still be applicable in the storage and retrieval of electronic information in digital library environments. The fully revised third edition of this highly regarded textbook has been thoroughly updated to incorporate major changes in this rapidly expanding field since the second edition in 2004, and a complete new chapter on citation indexing has been added. Unique in its scope, the book covers the whole spectrum of information storage and retrieval, including: users of IR and IR options; database technology; bibliographic formats; cataloguing and metadata; subject analysis and representation; automatic indexing and file organization; vocabulary control; abstracts and indexing; searching and retrieval; user-centred models of IR and user interfaces; evaluation of IR systems and evaluation experiments; online and CD-ROM IR; multimedia IR; hypertext and mark-up languages; web IR; intelligent IR; natural language processing and its applications in IR; citation analysis and IR; IR in digital libraries; and trends in IR research. Illustrated with many examples and comprehensively referenced for an international audience, this is an indispensable textbook for students of library and information studies. It is also an invaluable aid for information practitioners wishing to brush up on their skills and keep up to date with the latest techniques.


Information Retrieval Systems

Author by : Frederick Wilfrid Lancaster
Languange : en
Publisher by : New York ; Toronto : Wiley
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Description : The functions of information retrieval systems; The matching subsystem; The application of computers to information retrieval: off-line batch processing systems; On-line information retrieval; The growth of machine-readable data bases; Microforms and microform retrieval systems; Information centers and information services; Criteria by which information services may be evaluated; Evaluating the effectiveness of information services; Latent needs and expressed needs; Selecting a data base and searching; Vocabulary control; The indexing subsystem; Improving the performance of an information service on the basis of evaluation results; The evaluation of machine-readable data bases and information services derived from them; Cost-effectiveness and cost-benefitevaluation; Evaluation of a national information system; Pertinence and relevance; A brief history of evaluation; Natural language in infomration retrieval; Automatic systems; The role of informal communication; Users and user needs; The design of infomration services; The future: paperless information systems.


Document Retrieval Systems

Author by : Edward Abraham Mark
Languange : en
Publisher by : Unknown
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Description : Some of the mathematical properties of a term matching information retrieval system are investigated. It is shown that the common retrieval method of using a query vector, a matching function, and a threshold is equivalent to retrieving documents by requiring that a specific mathematical combination of the over and under indexing errors between the query vector and document index vector is bounded. Furthermore, the over and under indexing error set provides a sample space for a probabilistic description of the retrieval process. Using this approach an explicit form of the expected recall ratio is derived. (Author).


Fuzzy Information Retrieval

Author by : Donald H. Kraft
Languange : en
Publisher by : Morgan & Claypool Publishers
Format Available : PDF, ePub, Mobi
Total Read : 12
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Description : Information retrieval used to mean looking through thousands of strings of texts to find words or symbols that matched a user's query. Today, there are many models that help index and search more effectively so retrieval takes a lot less time. Information retrieval (IR) is often seen as a subfield of computer science and shares some modeling, applications, storage applications and techniques, as do other disciplines like artificial intelligence, database management, and parallel computing. This book introduces the topic of IR and how it differs from other computer science disciplines. A discussion of the history of modern IR is briefly presented, and the notation of IR as used in this book is defined. The complex notation of relevance is discussed. Some applications of IR is noted as well since IR has many practical uses today. Using information retrieval with fuzzy logic to search for software terms can help find software components and ultimately help increase the reuse of software. This is just one practical application of IR that is covered in this book. Some of the classical models of IR is presented as a contrast to extending the Boolean model. This includes a brief mention of the source of weights for the various models. In a typical retrieval environment, answers are either yes or no, i.e., on or off. On the other hand, fuzzy logic can bring in a "degree of" match, vs. a crisp, i.e., strict match. This, too, is looked at and explored in much detail, showing how it can be applied to information retrieval. Fuzzy logic is often times considered a soft computing application and this book explores how IR with fuzzy logic and its membership functions as weights can help indexing, querying, and matching. Since fuzzy set theory and logic is explored in IR systems, the explanation of where the fuzz is ensues. The concept of relevance feedback, including pseudorelevance feedback is explored for the various models of IR. For the extended Boolean model, the use of genetic algorithms for relevance feedback is delved into. The concept of query expansion is explored using rough set theory. Various term relationships is modeled and presented, and the model extended for fuzzy retrieval. An example using the UMLS terms is also presented. The model is also extended for term relationships beyond synonyms. Finally, this book looks at clustering, both crisp and fuzzy, to see how that can improve retrieval performance. An example is presented to illustrate the concepts.