Concepts of Information Retrieval PDF Download

Author: Roger C. Schank
Publisher:
ISBN:
Category : Memory
Languages : en
Pages : 45

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Book Description
If we want to build intelligent information retrieval systems, we will have to give them the capabilities of understanding Natural language, automatically organizing and reorganizing their memories, and using intelligent heuristics for searching their memories. These systems will have to analyze and understand both new text and Natural Language queries. In answering questions, they will have to direct memory search to reasonable places. This requires good organization of both the conceptual content of text and knowledge necessary for understanding those texts and accessing memory. The CYRUS and FRUMP systems (Kolodner (1978), Schank and Kolodner (1979), Dejong (1979)) comprise an information retrieval system called CyFr. Together, they have the analysis and retrieval capabilities mentioned above. FRUMP analysis news stories from the UPI wire for their conceptual content, and produces summaries of those stories. It sends summaries of stories about important people to CYRUS automatically adds those stories to its memory, and can then retrieve that information to answer question posed to it in natural language. This paper describes the problems involved in building such an intelligent system. It proposes solutions to some of those problems bases on recent research in Artificial Intelligence and Natural Language processing, and describes the CyFr system, which implements those solutions. The solutions we propose and implement are based on a model of human understanding and memory retrieval. (Author).

Author: Raya Fidel
Publisher: New York : Wiley
ISBN:
Category : Computers
Languages : en
Pages : 264

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Book Description
Developing a database involves four distinct functions, each building on the previous ones: analysis, design, coding, and testing. In the analysis stage, the database designer defines what a database should do to make it most useful to potential users by studying user needs, or data requirements analysis, and documentation. During design, a process that defines how a database will perform its tasks, the designer concentrates on software and hardware considerations. Coding is the actual implementation of the design. Testing is carried out before full-scale installation to examine how well it will perform. This book is about analysis, explaining how to perform data requirements analysis and how to represent the outcome of this analysis in a formal and comprehensive model that is useful for software and hardware considerations. This book is suitable as a textbook or as a handbook for systems analysts, end users, or information specialists.

Author: Peter Ingwersen
Publisher:
ISBN:
Category : Database searching
Languages : en
Pages : 264

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Book Description

Author: Maristella Agosti
Publisher: Springer Science & Business Media
ISBN: 1461313732
Category : Computers
Languages : en
Pages : 287

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Book Description
Information Retrieval (IR) has concentrated on the development of information management systems to support user retrieval from large collections of homogeneous textual material. A variety of approaches have been tried and tested with varying degrees of success over many decades of research. Hypertext (HT) systems, on the other hand, provide a retrieval paradigm based on browsing through a structured information space, following pre-defined connections between information fragments until an information need is satisfied, or appears to be. Information Retrieval and Hypertext addresses the confluence of the areas of IR and HT and explores the work done to date in applying techniques from one area, to the other leading to the development of `hypertext information retrieval' (HIR) systems. An important aspect of the work in IR/HT and in any user-centred information system is the emergence of multimedia information and such multimedia information is treated as an integral information type in this text. The contributed chapters cover the development of integrated hypertext information retrieval models, and the application of IR and HT techniques in hypertext construction and the approaches that can be taken in searching HIR systems. These chapters are complemented by two overview chapters covering, respectively, information retrieval and hypertext research and developments. Information Retrieval and Hypertext is important as it is the first text to directly address the combined searching/browsing paradigm of information discovery which is becoming so important in modern computing environments. It will be of interest to researchers and professionals working in a range of areas related to information discovery.

Author: Valiollah Tahani
Publisher:
ISBN:
Category :
Languages : en
Pages : 296

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Book Description

Author: Y. Tahani
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author: Janet L. Kolodner
Publisher: Psychology Press
ISBN: 1317685911
Category : Psychology
Languages : en
Pages : 458

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Book Description
‘Someday we expect that computers will be able to keep us informed about the news. People have imagined being able to ask their home computers questions such as "What’s going on in the world?"...’. Originally published in 1984, this book is a fascinating look at the world of memory and computers before the internet became the mainstream phenomenon it is today. It looks at the early development of a computer system that could keep us informed in a way that we now take for granted. Presenting a theory of remembering, based on human information processing, it begins to address many of the hard problems implicated in the quest to make computers remember. The book had two purposes in presenting this theory of remembering. First, to be used in implementing intelligent computer systems, including fact retrieval systems and intelligent systems in general. Any intelligent program needs to use and store and use a great deal of knowledge. The strategies and structures in the book were designed to be used for that purpose. Second, the theory attempts to explain how people’s memories work and makes predictions about the organization of human memory.

Author: Christopher D. Manning
Publisher: Cambridge University Press
ISBN: 1139472100
Category : Computers
Languages : en
Pages :

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Book Description
Class-tested and coherent, this textbook teaches classical and web information retrieval, including web search and the related areas of text classification and text clustering from basic concepts. It gives an up-to-date treatment of all aspects of the design and implementation of systems for gathering, indexing, and searching documents; methods for evaluating systems; and an introduction to the use of machine learning methods on text collections. All the important ideas are explained using examples and figures, making it perfect for introductory courses in information retrieval for advanced undergraduates and graduate students in computer science. Based on feedback from extensive classroom experience, the book has been carefully structured in order to make teaching more natural and effective. Slides and additional exercises (with solutions for lecturers) are also available through the book's supporting website to help course instructors prepare their lectures.

Author: Karen Sparck Jones
Publisher: Morgan Kaufmann
ISBN: 9781558604544
Category : Computers
Languages : en
Pages : 614

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Book Description
This compilation of original papers on information retrieval presents an overview, covering both general theory and specific methods, of the development and current status of information retrieval systems. Each chapter contains several papers carefully chosen to represent substantive research work that has been carried out in that area, each is preceded by an introductory overview and followed by supported references for further reading.

Author: Mohamed Ibrahim
Publisher: Springer
ISBN: 3540444696
Category : Computers
Languages : en
Pages : 1012

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Book Description
The Database and Expert Systems Applications (DEXA) conferences have established themselves as a platform for bringing together researchers and practitioners from various backgrounds and all regions of the world to exchange ideas, experiences and opinions in a friendly and stimulating environment. The papers presented at the conference represent recent developments in the field and important steps towards shaping the future of applied computer science and information systems. DEXA covers a broad field: all aspects of databases, knowledge based systems, knowledge management, web-based systems, information systems, related technologies and their applications. Once again there were a good number of submissions: out of 183 papers that were submitted, the program committee selected 92 to be presented. In the first year of this new millennium DEXA has come back to the United Kingdom, following events in Vienna, Berlin, Valencia, Prague, Athens, London, Zurich, Toulouse, Vienna and Florence. The past decade has seen several revolutionary developments, one of which was the explosion of Internet-related applications in the areas covered by DEXA, developments in which DEXA has played a role and in which DEXA will continue to play a role in its second decade, starting with this conference.