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The user entered the query “What is the historical relation between Greek and Roma”.

Natural Sciences Engineering Sciences. Client. Server. HTTP Servlet. HTTP Client : Java script. Morphological Analyzer. LDA : Jar. Manager. Learning Content Models for Semantic Search. Manager. GUI. SolR. Eran Peer, Hila Shalom.

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The user entered the query “What is the historical relation between Greek and Roma”.

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  1. Natural Sciences Engineering Sciences Client Server HTTP Servlet HTTP Client : Java script Morphological Analyzer LDA : Jar Manager Learning Content Models for Semantic Search Manager GUI SolR Eran Peer, Hila Shalom Advisors: Prof. Michael Elhadad, Dr. Menachem Adler to allow the user to explore a repository of textual documents, and discover material of interest even when he is not familiar with the content of the repository. Existing search engines provide powerful features to identify known documents by using a short description of their content (keywords, name of document). For example, a user wants to find information about a term that he knows, he enters the term's name in a search engine, and the search engine returns the address of the term's value at Wikipedia. The task we address is what happens when the user does not know the name of the term he is looking for, or when the term the user enters has several meanings. The system that we developed will help the user explore interactively the repository and the terms that are most significant in this repository. User Graphical Interface The project goal Search in the search results Enter text for searching Choose an article The user entered the query “What is the historical relation between Greek and Roma”. Here are the query’s results. The user can enter a query for new search or to search in the results. Search by article’s data The user can choose one of the topics to add it to the search. The user can choose one of the articles, to view it. The user clicked the topic “Roman copies of Greek sculptures”. Here are the results to the query with the topic. The user can choose to remove parts of the query. The user can view the topics as a list or as a wheel System Architecture The user can choose to search one of the topics. The user chose the article “Venus de’ Medici”. Here is the article. The users send questions in natural language (English/Hebrew), and receive relevant results Search by article’s topics The user can choose to search by the article’s data. The system builds automatically hierarchical topics by existing corpus Corpus • Client • HTTP Client – The functions in the client side • GUI – Web based graphical user interface • Server • HTTP Servlet – Handles the connection with the client • Morphological Analyzer – Analyze the articles into verb, noun, adjective etc. • LDA – Algorithm that creates hierarchical topics from the corpus. Tags all the articles with the topics. Can be replaced with a better one. • Corpus – Contains the articles and their data (author, date etc.). New and existing articles can be added or removed. Can be at English or Hebrew. • SolR – System for searching quickly and efficiently in huge corpus. The system tags the articles in the corpus with the topics What is…? This project was programmed in Java and Javascript using Eclipse. The system was developed using Mallet, SolR, Morphological analyzer and Tomcat. Web system - available every where, every time The users can navigate in the system to understand the corpus Our code at http://code.google.com/p/semantic-search2011

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