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(C) 2003, The University of Michigan 1
Information Retrieval
Handout #9
March 31, 2003
(C) 2003, The University of Michigan 2
Course Information
• Instructor: Dragomir R. Radev ([email protected])
• Office: 3080, West Hall Connector
• Phone: (734) 615-5225
• Office hours: M&F 11-12
• Course page: http://tangra.si.umich.edu/~radev/650/
• Class meets on Mondays, 1-4 PM in 409 West Hall
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Schedule
• March 31– Information extraction– Language reuse
• April 7– Language modeling for IR– The Lemur system
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Schedule
• HW3 assigned 03/24
• HW3 due 04/07
• Final projects due 04/11
• Final project presentations 04/14
• Final exam 04/212-3 essay questions, 2-3 problems
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Information extraction
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Message understandingGreek Foreign Minister Georges Papandreou said no one was injured
during the ordeal.
Turkey has sent a plane to Athens to bring the passengers to Ankara,
their original destination, Turkish Transportation Minister Binali
Yildirim said.
The hijacker had demanded to be taken to Germany, because his mother
and sister had been arrested there, the Turkish minister said.
Top-ranking Turkish officials, including Prime Minister Recep Tayyip
Erdogan and Foreign Minister Abdullah Gul had all spoken to the
suspect by phone to try and end the hijacking.
At least three Turkish parliamentarians, two from the current ruling
Justice and Development Party (AKP), were among the passengers.
Two Greek military jets were deployed to follow the plane into the
airport.
Turkish plane hijacker surrenders
Friday, March 28, 2003 Posted: 10:16 PM EST (0316 GMT)
The hijacked Turkish Airlines plane in Athens. ATHENS, Greece
The lone suspect in the hijacking of a Turkish Airlines plane
has surrendered after releasing 203 passengers and crew at the
international airport in Athens.
Greek authorities have arrested the suspect, 20-year-old Turkish
student Ozgur Gencaslan, according to journalist Anthee Carassavas.
The six-hour ordeal abroad Flight TK 160 began after the A-310 Airbus
was hijacked shortly after taking off from Istanbul. It landed in Athens
about 11:59 p.m. (4:50 p.m. ET) Friday.
All 203 passengers are now safe, including two pilots who had been
held during the final stages of intense negotiations between the
suspect and Greek and Turkish officials, Carassavas said.
Authorities have not yet said what sort of weapon the suspect may have
used to commandeer the plane.
(C) 2003, The University of Michigan 7
Questions?
• What happened?
• When?
• Where?
• What was the outcome?
• How many passengers were on board?
• Did anyone die?
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The MUC evaluations
• Terrorism
• Mergers and acquisitions in microelectronics
• Management succession
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Example template
• Process: layering, lithography, etching, packaging
• Developer
• Manufacturer
• Distributor
• Location
• Nationality, etc.
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The IE pipeline
• Text segmentation• Tokenization• Filtering• Partial arsing• Semantic interpretation• Coreference resolution• Template generation• Summarization
Cowie/Wilks 2000, Grishman 2003
