Structured Search is an emerging technology of querying multiple heterogeneous data sources in a scalable manner. It occupies the middle ground between Unstructured Search and Database Search.

Structured queries can comprise numeric and other predicates not supported by the keyword search. For e-commerce, this allows finding and comparing merchandise by specifications rather than by keywords needed to get to specifications. Instead of voluminous and often largely irrelevant outputs, users can receive as precise responses as they wish, and also can control the order of items in search results. So it is especially well suited for mobile e-commerce with its “on-the-go” nature.

While the keyword search is oriented towards humans, the structured search technology facilitates programmatic processing of search results by other systems or applications which also can generate structured queries automatically.

Altogether this can save millions of hours spent annually by shoppers researching goods and services online in order to get the best deals.

Within the structured search technology, search advertising becomes much more cost-effective because interests of shoppers can be detected much more precisely than in the keyword world.

Working to the buyer’s advantage, the structured search technology enables better prices, better shopping experience, and a more energized and efficient marketplace.


  • Structured Search: From Keywords to Key-objects
  • 1. Structured vs. Unstructured vs. Database Search
    • 1.1. Definition
    • 1.2. Limitations of Unstructured Search
    • 1.3. Unstructured Search Problems in e-Commerce
    • 1.4. Limitations of Database Search
    • 1.5. Structured Search Using Key-Objects
  • 2. Introducing Key-objects
    • 2.1. Mary’s printer
    • 2.2. Objects and instances
      • 2.2.1. Objects
      • 2.2.2. Object instances
    • 2.3. Key-object Catalog and Query Expansion
      • 2.3.1. Querying with key-objects
      • 2.3.2. Beyond SQL
      • 2.3.3. Key-object catalog
      • 2.3.4. Query expansion
      • 2.3.5. Metaobjects and advertising
      • 2.3.6. Query interface
  • 3. Structured Search Technology
    • 3.1. Scalable Search Framework
    • 3.2. Query Origination Service
    • 3.3. Q-format and R-format
    • 3.4. Query Processing Service
    • 3.5. Query Processing by Data Providers
  • 4. Structured Search Economics
    • 4.1. Saving Millions of Hours to Shoppers
    • 4.2. Optimizing and Energizing the Marketplace
    • 4.3. Search Advertising Paradise
    • 4.4. Perfect for Mobile E-commerce
  • 5. Case Studies
    • 5.1. Buy-By Marketplace
    • 5.2. BinYahGoo Search Portal
    • 5.3. Beyond E-commerce: Secure Government System
  • 6. Key-object Search Economics
    • 6.1. Saving Billions of Hours to Consumers
    • 6.2. Optimizing and Energizing the Marketplace
    • 6.3. Search Advertising Paradise
    • 6.4. Perfect for Mobile E-commerce
  • 7. Case Studies
    • 7.1. Buy-By Marketplace
    • 7.2. YaBinGoo Search Portal
    • 7.3. Beyond E-commerce: Secure Government System
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