中文信息檢索中基於結構約束的索引詞權重計算方法
The invention relates to a feature weighing computation method based on a structural constraint in a Chinese information retrieval. The method comprises the following steps: a. carrying out structuring processing to inquiry and obtaining a structuring inquiry result, wherein the structuring processing comprises one or a plurality of following steps: splitting words, carrying out part-of-speech tagging to splitted works, carrying out shallow parsing to inquiry or carrying out parsing to inquiry; b. determining an index term according to the structuring inquiry result and then determining an inquiry-context property set of the index term according to the structuring inquiry result which is adjacent to the index term and positioned in a word list; c. computing the weighing value of each property in the inquiry-context property set; d. combining the weighing values of all properties into property values of the index terms through a first composite function; and e. combining the property values of the index terms by a second composite function and obtaining the index term weighing. The method can compute the weighing accurately no matter whether the index terms exist in the word list ornot.
Inventor: LU, Yong-bang
Priority Number: CN101576888B
IPC Current: G06F001730
Assignee Applicant: The Hong Kong University of Science and Technology
Title: Index term weighing computation method based on structural constraint in Chinese information retrieval | Method for computing weight of index word based on structural constraint in Chinese information search course
Usefulness: Index term weighing computation method based on structural constraint in Chinese information retrieval | Method for computing weight of index word based on structural constraint in Chinese information search course
Summary: Method for computing weight of an index word based on a structural constraint in Chinese information search course.
Novelty: Index word weight computing method, involves combining weight values of attribute set to attribute values of word with combination function, and combining attribute values of word with other combination function to obtain weight of word
信息和通信技術/電信
軟件/應用
LUK Wing Pong, Robert
中國內地
