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" Precision is the ratio of the number of relevant documents retrieved to the total number of documents retrieved. "
Managing Virtualization of Networks and Services: 18th IFIP/IEEE ... - 58. lappuse
laboja - 2007 - 272 lapas
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Evaluation of Information Systems: A Selected Bibliography with ..., 13. sējums

Madeline M. Henderson - 1967 - 209 lapas
...used in the study is the relevance ratio in combination with the recall ratio. Recall ratio equals the number of relevant documents retrieved to the total number of documents in the file; relevance ratio equals the number of relevant documents retrieved to the total number...
Pilnskats - Par šo grāmatu

Visual Database Systems 3: Visual information management

Stefano Spaccapietra, Ramesh Jain - 1995 - 428 lapas
...containing that index term. The effectiveness of a retrieval system is measured by two metrics: recall (the ratio of the number of relevant documents retrieved to the total number of relevant documents in the corpus) and precision (the ratio of the number of relevant documents retrieved...
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Handbook of Character Recognition and Document Image Analysis

Horst Bunke, Patrick Shen-pei Wang - 1997 - 833 lapas
...recall and precision, have endured since their introduction by Kent in 1955 [19]. Put simply, recall is the ratio of the number of relevant documents retrieved to the total number of relevant documents in the collection. Precision is the ratio of the number of relevant documents that...
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Information Retrieval: Algorithms and Heuristics

David A. Grossman, Ophir Frieder - 1998 - 254 lapas
...Document Routing User 3 User 4 measure effectiveness, two ratios are used: precision and recall. Precision is the ratio of the number of relevant documents retrieved to the total number retrieved. Precision provides an indication of the quality of the answer set. However, this does not...
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Challenges of Information Technology Management in the 21st Century: 2000 ...

Information Resources Management Association. International Conference - 2000 - 1227 lapas
...any page that contains at least one search term has a positive effect on recall, which is defined as the ratio of the number of relevant documents retrieved to the total number of relevant documents in the collection. Precision, however, suffers. To maximize precision, terms with...
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Computational Information Retrieval

Michael W. Berry - 2001 - 197 lapas
...number of relevant documents retrieved to the total number of documents retrieved. Recall is defined as the ratio of the number of relevant documents retrieved to the total number of relevant documents in the collection. Vector space methods provide a relevance ranking of all documents...
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Information Retrieval: Algorithms and Heuristics

David A. Grossman, Ophir Frieder - 2004 - 332 lapas
...desired, this would not be a good result set. Recall considers the total number of relevant documents; it is the ratio of the number of relevant documents retrieved to the total number of documents in the collection that are believed to be relevant. Computing the total number of relevant documents...
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The Practical Handbook of Internet Computing

Munindar P. Singh - 2004 - 1144 lapas
...parameters of retrieval effectiveness used over the years in the IR area. Recall (R) is defined as the ratio of the number of relevant documents retrieved to the total number of relevant documents in the collection. The ratio of the number of relevant documents retrieved to the...
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Knowledge Integration: The Practice of Knowledge Management in Small and ...

Antonie Jetter, Jeroen Kraaijenbrink, Hans-Horst Schröder, Fons Wijnhoven - 2005 - 204 lapas
...used for the evaluation of search strategies, could be calculated for both search strategies. Recall is the ratio of the number of relevant documents retrieved to the total number of relevant documents in the database, whereas precision is the ratio of the number of relevant documents...
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SOFSEM 2007: Theory and Practice of Computer Science: 33nd Conference on ...

Jan van Leeuwen, Giuseppe F. Italiano, Wiebe van der Hoek, Christoph Meinel, Harald Sack, František Plášil - 2007 - 937 lapas
...used precision and recall, a widely used technique in the information retrieval community [15]. Recall is the ratio of the number of relevant documents retrieved to the total number of relevant documents. Precision is the ratio of relevant documents to the number of retrieved documents,...
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