Content-Based Retrieval (CBR)

• Contents contained in digital text, sound, music, image, video, etc.

  A big step forward from traditional database search which is largely based on simple attributes.

• Serve as a browsing tool - analogous to the current web search

• Keyword indexing is fast and easy to implement. However, it has limitations:
  • Can't handle nonspecific queries such as "Find a scenic photo of Lake Tahoe"
  • Misspelling is frequent and difficult, e.g., "azalia" for "azalea"
  • Descriptions are often inaccurate and incomplete