An evaluation of retrieval effectiveness for a full-text document-retrieval system
نویسندگان
چکیده
منابع مشابه
AN EVALUATION OF RETRIEVAL EFFECTIVENESS FOR A FULL-TEXT DOCulwvT-l?ETl?lEviiL SYSTEM
Document retrieval is the problem of finding stored documents that contain useful information. There exist a set of documents on a range of topics, written by different authors, at different times, and at varying levels of depth, detail, clarity, and precision, and a set of individuals who, at different times and for different reasons, search for recorded information that may be contained in so...
متن کاملDocument retrieval and text retrieval
DR systems illustrate every variety of indexing language, request and document description, and search mechanism. Controlled languages (CLs) have been commonly used, across the range from only slightly restricted natural language (NL) to a carefully designed artificial language. With CLs professional indexing is required and professional searching is the norm. However automatic DR systems have ...
متن کاملImproved Compressed Indexes for Full-Text Document Retrieval
We give new space/time tradeoffs for compressed indexes that answer document retrieval queries on general sequences. On a collection of D documents of total length n, current approaches require at least |CSA| + O(n lgD lg lgD ) or 2|CSA| + o(n) bits of space, where CSA is a full-text index. Using monotone minimum perfect hash functions, we give new algorithms for document listing with frequenci...
متن کاملOverview of the Full-Text Document Retrieval Benchmark
8.1 Introduction For most of recorded history, textual data have existed primarily in hardcopy format, and the related document retrieval process was essentially a manual task, possibly involving the assistance of cross-reference catalogs. By the mid-1960s, work was under way at the University of Pittsburgh to develop computer-assisted legal research systems [Harrington, 1984–85]. Also, during ...
متن کاملHarvesting for Full-Text Retrieval
We propose an approach to Distributed Information Retrieval based on the periodic and incremental centralisation of full-text indices of widely dispersed and autonomously managed content sources. Inspired by the success of the Open Archive Initiative’s protocol for metadata harvesting, the approach occupies middle ground between: (i) the crawling of content, and (ii) the distribution of retriev...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Communications of the ACM
سال: 1985
ISSN: 0001-0782,1557-7317
DOI: 10.1145/3166.3197