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What is Map

Chapter 388

Encyclopedia of Information Science and Technology, Fourth Edition

Mean Average Precision: For systems that return a ranked sequence of documents, it is desirable also to consider the order in which the returned documents are presented. MAP measures the Average Precision of a set of queries for which the answers are arranged by relevance.

Published in Chapter:

Analysis and Assessment of Cross-Language Question Answering Systems

Juncal Gutiérrez-Artacho (University of Granada, Spain) and María-Dolores Olvera-Lobo (CSIC, Unidad Asociada Grupo SCImago and University of Granada, Spain)

Source Title: Encyclopedia of Information Science and Technology, Fourth Edition

DOI: 10.4018/978-1-5225-2255-3.ch388

Abstract

Within the sphere of the Web, the overload of information is more notable than in other contexts. Question answering systems (QAS) are presented as an alternative to the traditional Information Retrieval (IR) systems, seeking to offer precise and understandable answers to factual questions instead of showing the user a list of documents related to a given search . Given that the QAS is presented as a substantial advance in the improvement of IR, it becomes necessary to determine its effectiveness for the final user. With this aim, 7 studies were undertaken to evaluate: a) in the first two, the linguistic resources and tools used in these systems for multilingual retrieval (Research 1; Research 2); and b) the performance and quality of the answers of the main monolingual and multilingual QA of general domain and specialized domain in the Web in response to different types of questions and subjects, so that different evaluation means can be applied (Research 3, Research 4, Research 5, Research 6, Research 7).