tailieunhanh - Báo cáo khoa học: "A Speech-based Just-in-Time Retrieval System using Semantic Search"

The Automatic Content Linking Device is a just-in-time document retrieval system which monitors an ongoing conversation or a monologue and enriches it with potentially related documents, including multimedia ones, from local repositories or from the Internet. The documents are found using keyword-based search or using a semantic similarity measure between documents and the words obtained from automatic speech recognition. | A Speech-based Just-in-Time Retrieval System using Semantic Search Andrei Popescu-Belis Majid Yazdani Alexandre Nanchen and Philip N. Garner Idiap Research Institute Rue Marconi 19 CP 592 1920 Martigny Switzerland apbelis myazdani ananchen pgarner @ Abstract The Automatic Content Linking Device is a just-in-time document retrieval system which monitors an ongoing conversation or a monologue and enriches it with potentially related documents including multimedia ones from local repositories or from the Internet. The documents are found using keyword-based search or using a semantic similarity measure between documents and the words obtained from automatic speech recognition. Results are displayed in real time to meeting participants or to users watching a recorded lecture or conversation. 1 Introduction Enriching a monologue or a conversation with related content such as textual or audio-visual documents on the same topic is a task with multiple applications in the field of computer-mediated humanhuman communication. In this paper we describe the Automatic Content Linking Device ACLD a system that analyzes spoken input from one or more speakers using automatic speech recognition ASR in order to retrieve related content in real-time from a variety of repositories. These include local document databases or archives of multimedia recordings as well as websites. Local repositories are queried using a keyword-based search engine or using a semantic similarity measure while websites are queried using commercial search engines. We will first describe the scenarios of use of the ACLD in Section 2 and review previous systems for 80 just-in-time retrieval in Section 3. The ACLD components will be outlined in Sections to . Four types of evaluation results obtained with our system will finally be summarized in Sections to . 2 Content Linking Scenarios of Use Just-in-time information retrieval . finding useful documents without the need for a user to .

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