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Compressed Bit-sliced Signature Files An Index Structure for Large Lexicons
(1999-04-01)
We use the signature file method to search for partially specified terms in large lexicons. To optimize efficiency, we use the concepts of the partially evaluated bit-sliced signature file method and memory resident data ...
Experiments on Tunable Indexing
(1988-04-01)
The effectiveness and efficiency of an Information Retrieval (IR) system depends on the quality of its indexing system. Indexing con be used in inverted file systemsor in cluster-based retrieval. In this article, new concept ...
HypIR: Hypertext Based Information Retrieval
(1992-08-01)
Information Retrieval (IR), which is also known as text or document retrieval, is the process of locating and retrieving docri)nents that are relevant to the user queries. In
hypertext environments, docuinent databases are ...
Dynamic Signature File Partitioning Based on Term Characteristics
(1992-08-01)
Signature files act as a filter on retrieval to discard a large number of non-qualifying data items. Linear hashing with superimposed signatures (LHSS) provides an effective retrieval filter to process queries in dynamic ...
Signature Files: An Integrated Access Method for Formatted and Unformatted Databases
(1993-05-01)
The signature file approach is one of the most powerful information storage and retrieval techniques which is used for finding the data objects that are relevant to the user queries. The main idea of all signature based ...
Analysis of Signature Generation Schemes for Multiterm Queries In Partitioned Signature File Environments
(1993-05-01)
Our analysis explores the performance of three superimposed signature generation schemes as they are applied to a dynamic sigrtature file organization based on linear hashing: Linear Hashing with Superinzposed Signatures ...
Analysis of Signature Generation Schemes for Multiterm Queries In Linear Hashing with Superimposed Signatures
(1995-12-01)
Signature files provide efficient retrieval of data by reflecting the essence of the data objects into bit patterns. Our analysis explores the performance of three superimposed signature generation schemes as they are ...
Experiments on the Efficiency of Cluster Searches
(1991-03-01)
The efficiency of various cluster based retrieval (CBR) strategies is analyzed. The possibility of combining CBR and inverted index search (11s) is investigated. A method for combining the two approaches is proposed and ...
Signature File Hashing Using Term Occurrence and Query Frequencies
(1992-08-01)
Signature files act as a filter on retrieval to discard a large number of non-qualifying data items. Linear hashing with superimposed signatures (LHSS) provides an effective retrieval filter to process queries in dynamic ...
Concepts and Effectiveness of the Cover Coefficient Based Clustering Methodology for Text Databases
(1987-12-01)
An algorithm for document clustering is introduced. The base concept of the algorithm, Cover Coefficient (CC) concept, provides means of estimating the number of clusters within a document database. The CC concept is used ...