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A Computer Called "Watson"
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James Thomas
September 17, 2012
Technology
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A Computer Called "Watson"
LondonJS talk on the technology behind IBM Watson.
James Thomas
September 17, 2012
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Transcript
A Computer Called “Watson” James Thomas, IBM Emerging Tech COVER
PHOTO Add cover photo Monday, 17 September 2012
GARY KASPAROV VERSUS “DEEP BLUE” MAY 1997 Monday, 17 September
2012
BLUE GENE DECEMBER 1999 Monday, 17 September 2012
“Fast forward to 2004...” Monday, 17 September 2012
JEOPARDY QUIZ SHOW Monday, 17 September 2012
KEN JENNINGS CHAMPION OF CHAMPIONS Monday, 17 September 2012
KEN JENNINGS CHAMPION OF CHAMPIONS KEN’S PERFORMANCE Monday, 17 September
2012
What if we build a computer to play Jeopardy? Monday,
17 September 2012
What if we build a computer to play Jeopardy? It’s
way too hard Monday, 17 September 2012
Jeopardy! Finite, mathematically defined search space Limited number of moves
and states Symbols completed grounded in mathematical rules of the games Chess Enormous problem domain and search space Source material is inherently unstructured information Advanced natural language processing Monday, 17 September 2012
BASELINE PERFORMANCE INITIAL EXPERIMENT Monday, 17 September 2012
“Fast forward to 2007...” Monday, 17 September 2012
DR. DAVID FERRUCCI - “WATSON” TEAM DIRECTOR 2007 - 2011
Monday, 17 September 2012
SIMULATING JEOPARDY! MATCHES Monday, 17 September 2012
BASELINE PERFORMANCE INITIAL EXPERIMENT Monday, 17 September 2012
WATSON WAS READY FEBRUARY 2011 Monday, 17 September 2012
Watson Jeopardy! Challenge February 14-16 2011. Ken Jennings Brad Rutter
Monday, 17 September 2012
WATSON 1 - HUMANS 0 FEBRUARY 16, 2011 Monday, 17
September 2012
“Its largest airport is named for a WWII hero; its
second largest, for a WWII battle” Category: US Cities Monday, 17 September 2012
“Its largest airport is named for a WWII hero; its
second largest, for a WWII battle” Category: US Cities Watson: Toronto Monday, 17 September 2012
How does it work? Monday, 17 September 2012
WATSON ARCHITECTURE - DEEPQA MASSIVELY PARALLEL PROBABILISTIC EVIDENCE-BASED ARCHITECTURE Monday,
17 September 2012
DEEPQA ARCHITECTURE PHASES Question Analysis Primary Search Candidate Answer Generation
Evidence Retrieval Evidence Scoring Merging and Ranking Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES QUESTION ANALYSIS CATEGORY: CAPITALS QUESTION: WHAT IS
THE CAPITAL OF SAMOA? Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES QUESTION ANALYSIS CATEGORY: POETS & POETRY QUESTION:
HE WAS A BANK CLERK IN THE YUKON BEFORE HE PUBLISHED “SONGS OF SOURDOUGH” IN 1907. Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES QUESTION ANALYSIS CATEGORY: POETS & POETRY QUESTION:
HE WAS A BANK CLERK IN THE YUKON BEFORE HE PUBLISHED “SONGS OF SOURDOUGH” IN 1907. DISCOVER: FOCUS Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES QUESTION ANALYSIS CATEGORY: POETS & POETRY QUESTION:
HE WAS A BANK CLERK IN THE YUKON BEFORE HE PUBLISHED “SONGS OF SOURDOUGH” IN 1907. DISCOVER: LEXICAL ANSWER TYPE Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES QUESTION ANALYSIS CATEGORY: POETS & POETRY QUESTION:
HE WAS A BANK CLERK IN THE YUKON BEFORE HE PUBLISHED “SONGS OF SOURDOUGH” IN 1907. DISCOVER: RELATIONSHIPS Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES QUESTION ANALYSIS CATEGORY: POETS & POETRY QUESTION:
HE WAS A BANK CLERK IN THE YUKON BEFORE HE PUBLISHED “SONGS OF SOURDOUGH” IN 1907. DISCOVER: QUESTION CLASS Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES HYPOTHESIS GENERATION Hypothesis generation consists of two
phases... Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES HYPOTHESIS GENERATION Primary Search Monday, 17 September
2012
DEEPQA ARCHITECTURAL PHASES HYPOTHESIS GENERATION Data Sources - Unstructured Wikipedia
IMDb Encyclopaedias Dictionaries Thesauri Literary Works Newswire Articles Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES HYPOTHESIS GENERATION Data Sources - Structured DBpedia
Wordnet YAGO Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES HYPOTHESIS GENERATION Candidate Answer Generation Monday, 17
September 2012
DEEPQA ARCHITECTURAL PHASES EVIDENCE RETRIEVAL Watson then searches for additional
evidence... Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES EVIDENCE SCORING Deep Scoring Monday, 17 September
2012
DEEPQA ARCHITECTURAL PHASES EVIDENCE SCORING 0 0.25 0.5 0.75 1
Temporal Geospatial LAT Popularity Deep Scoring Christopher Columbus Vasco De Gamma Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES FINAL MERGING AND RANKING Answer Merging Monday,
17 September 2012
DEEPQA ARCHITECTURAL PHASES FINAL MERGING AND RANKING Answer Merging Monday,
17 September 2012
DEEPQA ARCHITECTURAL PHASES FINAL MERGING AND RANKING Answer Ranking ISAAC
NEWTON [0.10, 0.45 ... 0.78, 0.12] ??? ANSWER SCORES RANK EDMOND HALLEY [0.31, 0.52 ... 0.08, 0.72] ??? WILHELM TEMPEL [0.21, 0.54 ... 0.18, 0.92] ??? PETER SELLERS [0.14, 0.04 ... 0.25, 0.41] ??? Monday, 17 September 2012
DEEPQA ARCHITECTURAL PHASES FINAL MERGING AND RANKING Monday, 17 September
2012
DEEPQA ARCHITECTURAL PHASES FINAL MERGING AND RANKING Answer Ranking ISAAC
NEWTON [0.10 ... 0.12] 3 ANSWER SCORES RANK EDMOND HALLEY [0.31 ... 0.72] 1 WILHELM TEMPEL [0.21 ... 0.92] 2 PETER SELLERS [0.14 ... 0.41] 4 0.14 CONFIDENCE 0.78 0.34 0.04 Monday, 17 September 2012
DEEPQA PERFORMANCE SCALING CHALLENGES Need to answer within a few
seconds.... Monday, 17 September 2012
DEEPQA PERFORMANCE SCALING CHALLENGES Need to answer within a few
seconds.... Early implementation took over two hours Monday, 17 September 2012
SCALING WATSON Monday, 17 September 2012
WATSON HARDWARE NINETY POWER 750 SERVERS 2880 POWER7 PROCESSOR CORES
16 TERABYTES OF RAM Monday, 17 September 2012
WATSON 1 - HUMANS 0 FEBRUARY 16, 2011 Monday, 17
September 2012
PUTTING WATSON TO WORK What’s next? Monday, 17 September 2012
PUTTING WATSON TO WORK HEALTHCARE Monday, 17 September 2012
QUESTIONS? Monday, 17 September 2012