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CSCI 572 Project: Geo-spatial Search Engine

CSCI 572 Project: Geo-spatial Search Engine. By Liqiang Cheng, Naiqi Jin and Jason Yap. Project Description. Project summary: A Geo-spatial search system that collects and combines data from various sources into a single searchable repository. Goals:

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CSCI 572 Project: Geo-spatial Search Engine

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  1. CSCI 572 Project: Geo-spatial Search Engine By Liqiang Cheng, Naiqi Jin and Jason Yap

  2. Project Description • Project summary: A Geo-spatial search system that collects and combines data from various sources into a single searchable repository. • Goals: • Collect data about locations of interest from multiple sources. • Provide a User Interface that allows a user to query a geographic area for interesting locations. • Satisfy queries efficiently (results returned in real time).

  3. Architecture User (Web Browser) External Sources User Query Results Yelp.com Web Server Crawler Upload Query Crawled Results Update DBMS & Index Translated Index Query Result Set Urbanspoon.com Data Repository and Spatial Indexes

  4. Crawler urbanspoon.com yelp.com

  5. Crawler • two data sources • yelp.com • urbanspoon.com • crawling several postal codes around USC • information crawled • name • address • URL • latitude, longitude • average review (1-100 points) • number of reviews

  6. Example Crawled Results yelp.com

  7. Indexing and Retrieval • MySQL Spatial Index was used to index locations for efficient querying. • MyISAM tables specified with “SPATIAL INDEX” create an R-tree index which supports efficient range queries. • GPS coordinates for each location was extracted by the crawler and registered with the DBMS and index through the Upload component. • To generate a query for retrieval, a user specifies points of a polygon which translate to GPS coordinates. A Minimum Bounding Rectangle(MBR) specifies the area for the DBMS query in SQL.

  8. User Interface • Advertisement module - Commercial scrolling advertisement and propagation such as facebook and twitter. • Geo-spatial Search module (Primary UI) - Conducting search query by drawing polygon. - Google maps presentation ordered by Name, Rating, Type or Votes No. (Different type has different color indexed Marker) UI (Web Browser) Advertisement Geo-spatial Search

  9. User Interface

  10. User Interface OrderBy Number of Votes OrderBy Average Rating Facebook popularization OrderBy Average Rating

  11. Demo • Website: • http://mslab11.usc.edu:8080/cs572/

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