Korea Advanced Institute of Science and Technology

Chonnam National University

Yu Chul Jung

Kyung Min Kim

Sung Hyon Myaeng

Chil Woo Lee

Keun Chan Park

Jin Hyuk Choi

Disclosed is a mobile application search method and system using a human activity knowledge database. The mobile application search system includes a user interface unit that provides an input environment to allow a user to input a user query and displays a mobile application search result related to the user query and a mobile application search engine that receives the user query from the user interface unit and searches for a mobile application related to the user query using an activity knowledge database in which a list of elements involved in achieving a plurality of goals that people desire in daily life is stored. The present invention increases the user's satisfaction by solving a word mismatching problem between a user query and a mobile application and improves mobile application search performance using a human activity knowledge database.

Mobile application search method and system using human activity knowledge database

An information retrieval system and method, and more particularly, a query and document topic category transition analysis system and method in which a query topic category of a query input from a user as an information retrieval keyword and a document topic category of a document which a user regards as relevant and selects from information retrieval results are classified to analyze transition between the query topic category and the document topic category, and a query expansion-based information retrieval system and method using query and document topic category transition analysis in which a query input from a user is expanded using a topic category transition analysis result, and corresponding information or documents are retrieved using the expanded query are provided.

Query and document topic category transition analysis system and method and query expansion-based information retrieval system and method

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Daegu, South Korea

Yu Chul Jung