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Web Scale Discovery Service Vs Federated Search

Web Scale Discovery Service Vs Federated Search. NIKESH NARAYANAN nikeshn@gmail.com. Web Scale Discovery Service Vs Federated Search. Both facilitate Single Search Box for searching from Multiple resources

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Web Scale Discovery Service Vs Federated Search

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  1. Web Scale Discovery ServiceVs Federated Search NIKESH NARAYANAN nikeshn@gmail.com

  2. Web Scale Discovery Service Vs Federated Search • Both facilitate Single Search Box for searching from Multiple resources • Federated Search is fairly old technology which allows users to submit a real-time search in parallel to multiple information sources and retrieve results. • Web Scale Discovery services is the state of the art technology which is basically based on pre-harvested metadata from vast collection of resources. Some of the features are • Unified platform to search all the resources including licensed, open and local collections including Library Catalog and Institutional Repository • Pre-harvested central index of metadata • Google like single search box • Single results list for all collections • Relevancy ranking across entire results • Full featured user interface • Facets and tools for narrowing results • Connections to full text

  3. Federated Search Softwares Search: Search Results Real-time query and responses

  4. Discovery Services Local Index Search: Digital Collections Search Results Local Index Meta Search Index Pre-built harvesting and indexing

  5. Basic Differences

  6. Federated Search - Drawbacks • It is too slow • Connectors break • Brings back too few results from each source • Difficult to rank results well (meta-data differences, lack of info)

  7. Advantages of Discovery service compared to Federated Search Engine

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