(C) 2003, The University of Michigan1 Information Retrieval Handout #9 March 31, 2003

(C) 2003, The University of Michigan2 Course Information Instructor: Dragomir R. Radev Office: 3080, West Hall Connector Phone: (734) Office hours: M&F Course page: Class meets on Mondays, 1-4 PM in 409 West Hall

(C) 2003, The University of Michigan3 Schedule March 31 –Information extraction –Language reuse April 7 –Language modeling for IR –The Lemur system

(C) 2003, The University of Michigan4 Schedule HW3 assigned 03/24 HW3 due 04/07 Final projects due 04/11 Final project presentations 04/14 Final exam 04/ essay questions, 2-3 problems

(C) 2003, The University of Michigan5 Information extraction

(C) 2003, The University of Michigan6 Message understanding Greek 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 Michigan7 Questions? What happened? When? Where? What was the outcome? How many passengers were on board? Did anyone die?

(C) 2003, The University of Michigan8 The MUC evaluations Terrorism Mergers and acquisitions in microelectronics Management succession

(C) 2003, The University of Michigan9 Example template Process: layering, lithography, etching, packaging Developer Manufacturer Distributor Location Nationality, etc.

(C) 2003, The University of Michigan10 The IE pipeline Text segmentation Tokenization Filtering Partial arsing Semantic interpretation Coreference resolution Template generation Summarization Cowie/Wilks 2000, Grishman 2003