Outsourcing Models

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Distributed Search Engine OpenCola http//www.tec
hnologyreview.com/articles/print_version/heltzel04
0901.asp
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OpenCola

• OpenCola (www.opencola.com) was incorporated in
  1999, is a distributed search engine
• OpenCola stands for Collaborative Object Lookup
  Architecture
• OpenCola runs as a client and a server a
  clever on your computer
• As you surf the Web, you drag things you find
  (and like) into a folder. From your choices,
  OpenCola learns your interests and crawls the Web
  for related pages, music or games

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OpenCola
The "cola" in OpenCola stands for Collaborative
Object Lookup Architecture. Collaborative,
because the software peeks into other people's
OpenCola folders and makes choices for you based
on what others have found useful. If you don't
like what the software finds, you throw it
outand repeat.
Cory Doctorow
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OpenCola

• The Clever has two jobs Finding documents and
  figuring out how to help other clevers
• Clevers locate other clevers that are spidering
  the same sites as they are, negotiate among
  themselves to appoint a chief spider, which then
  breaks the spidering job up into little pieces.
• Clevers also data-mine the queries that pass
  through them and play match-maker beetween users
  who have similar interest, passing each users
  research methodologies around to similar users
  and allowing them to learn from one another

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OpenCola

• Examples
• My clever says Hey you got any new document from
  wired.com that you think Id like? And your
  clever replies the URLs of three new wired.com
  articles
• A user put files of interest an article about
  security holes in router into a folder on their
  desktop. OpenCola folders crawls the network,
  migrating to the desktops of anyone likely to
  have the router information. The software finds
  other files held by those with similar interest
  and suggest those as well for example, someone
  with router-security content might commonly have
  load-balancing content too.

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OpenCola

• The openCola Folder as you surf the web you drag
  things you find and like into a folder
• The Relevance queue scans the linked pages and
  builds a set of search criteria
• The LinkRipper pulls the links from the
  documents in your OpenCola folder
• The Relevance Engine scores the new pages
  against your criteria, as you approve or reject
  pages, Opencola updates your criteria, refining
  your search.

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Major Players in P2P search

• JXTA. (search.jxta.org) A P2P search engine,
  part of Sun Microsystmens JXTA project
• Plebio (www.plebio.com) An open-source P2P
  search engine that searches the online databses
  of computers running Plebio software.
• Pandango
• Pointera Sharing Engine

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