Build your Own Search Service
Chris Heilmann
Saurabh Sahni
HackU: IIT Delhi 31st Jan’ 2009

Outline
• BOSS Examples
• About BOSS API
– What?
– Why?
– Features
• How to use it
– BOSS API
– BOSS Mashup framework
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BOSS Examples
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hakia: http://hakia.com/
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hakia: http://hakia.com/
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hakia: http://hakia.com/
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Cluuz: http://cluuz.com
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Cluuz: http://cluuz.com
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Cluuz: http://cluuz.com
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Keyword finder - http://keywordfinder.org/
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askBOSS: http://ask-boss.appspot.com/
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askBOSS: http://ask-boss.appspot.com/
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askBOSS: http://ask-boss.appspot.com/
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askBOSS: http://ask-boss.appspot.com/
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askBOSS: http://ask-boss.appspot.com/
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About BOSS API
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What?
• Open Yahoo’s core search features via web services to
let 3rd parties revolutionize Search
• Unrestricted
http://developer.yahoo.com/search/boss
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Opening the search technology stack
Rank
Assist
EXTRACT
Retrieve
SPAM <-> Gold Usage
CRAWL
Web Map
Analyze
Index Index
50B pages * 20ms page download = 31 years
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Opening the search technology stack
Your App here
WEB API
Rank
Assist
EXTRACT
Retrieve
SPAM <-> Gold Usage
CRAWL
Web Map
Analyze
Index Index
50B pages * 20ms page download = 31 years
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Why?
• Barriers to entry are massive
– a massive capital investment
– access to top technical talent
• Asset to Innovate
– Develop new relevance models
• Leverage user insights
• Use tags, bookmarks
– Change presentation style
• Search anywhere
– Improve Vertical Quality w/ Web comprehensiveness
– Fragment the market, foster more players, choice, competition
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BOSS API features
• Unlimited queries per day
• No branding or attribution
• No restrictions on presentation
• Ability to re-order results and blend-in addition content
• Access to multiple verticals (web search, image, news)
• Spell checks, keyword suggestions
• 40+ supported language and region pairs
• Ability to monetize
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How to use it?
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Get Started
• Register for an application id
http://developer.yahoo.com/wsregapp/
• Documentation
http://developer.yahoo.com/search/boss/boss_guide/
• Code samples: Javascript, PHP and Python
http://www.saurabhsahni.com/boss-examples.zip
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BOSS API
Searching
Slumdog
Millionaire
(Source: http://en.wikipedia.org/wiki/File:Slumdog_Millionaire_poster.jpg)
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BOSS API
• Search for slumdog millionaire:
– http://boss.yahooapis.com/ysearch/web/v1
/slumdog+millionaire?appid=xyz&format=xml
• Exact search for “slumdog millionaire”
– http://boss.yahooapis.com/ysearch/web
/v1/%22slumdog+millionaire%22
?appid=xyz&format=xml
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BOSS API
• Search for slumdog millionaire only on indiatimes.com:
– Add site:indiatimes.com to your query
– http://boss.yahooapis.com/ysearch/web/v1/slumdog
+millionaire+site%3Aindiatimes.com
?appid=xyz&format=xml
• Search for slumdog millionaire on selected movie sites
– Add param sites=indiatimes.com,movies.yahoo.com,imdb.com
– http://boss.yahooapis.com/ysearch/web/v1/slumdog
+millionaire?appid=xyz&sites=indiatimes.co
m%2Cmovies.yahoo.com&format=xml
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BOSS API
• Find related keywords
– Add parameter view=keyterms
– http://boss.yahooapis.com/ysearch/web/v1/slumdog
+millionaire?appid=xyz&view=keyterms&format=xml
• Search images
– http://boss.yahooapis.com/ysearch/images/v1/slumdog
+millionaire?dimensions=small
• Search news
– http://boss.yahooapis.com/ysearch/news/v1/slumdog
+millionaire?age=15d
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BOSS API
Spell check request
http://boss.yahooapis.com/ysearch/spelling/v1/
milionare?format=xml
Response
<ysearchresponse responsecode=”200”>
<resultset_spelling count=\"1\" start=“0\" totalhits=\"1\" deephits=\"1\">
<result>
<suggestion>millionaire</suggestion>
</result>
</resultset_spelling>
</asearchresponse>
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BOSS API
http://boss.yahooapis.com/ysearch/{vert}/v1/{query}
• {query}: term to look for (url-encoded)
• {vert} := {web, news, images, spelling}
• @ required
– appid
• @ optional
– start, count, lang, region, format, callback, sites
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BOSS Mashup Framework
• Python (v2.5+) library
• BOSS Search SDK plus …
• SQL for remixing arbitrary XML/JSON sources
http://developer.yahoo.com/search/boss/mashup.html
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BMF + Google App Engine
• Enhanced version of BMF to GAE platform
• http://zooie.wordpress.com/2008/08/04/yahoo-boss-google-app-engine-integrated/
• Enables quick deployment of BOSS applications online
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One more thing…
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BOSS in Academic Research
• The biggest dataset available on web
• Very useful for Web-mining research experiments
– Natural language processing
– Semantic extraction
– Related keywords
– Similarity detection
– Clustering algorithms
– Spelling corrections
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Thank You
Questions?
More: http://developer.yahoo.com/search/boss/
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Appendix
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Search UI Templates are Included in the
BOSS Mashup Framework
http://www.yahoo.com
BOSS Mashup Framework simplifies aggregating and presenting multiple data sources
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BMF Features
• select, group, sort, union, joins, udfs, where
• Text normalization and duplicate removal
• Auto-transformation of resource-oriented API results
into tables w/o parsing
• All-in-memory storage and retrieval operations
• Ability to join lists of tables via an arbitrary predicate
function (map-like)
• Search UI template framework
• Single search function provides total access to
BOSS REST API
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