1. Machine-learning based Semi-structured IE Chia-Hui Chang Department of Computer Science & Information Engineering National Central University [email_address]

6. WIEN N. Kushmerick, D. S. Weld, R. Doorenbos, University of Washington, 1997 http://www.cs.ucd.ie/staff/nick/

7. Example 1

8. Extractor for Example 1

9. HLRT

11. BuildHLRT

16. Softmealy Chun-Nan Hsu, Ming-Tzung Dung, 1998 Arizona State University http://kaukoai.iis.sinica.edu.tw/~chunnan/mypublications.html

19. Example

20. Label the Answer Key 4 種情形

21. Finite State Transducer M -A A -N N -U U e extract extract extract extract skip skip skip skip skip 多解決了 (N, M) 、 (N, A, M) 2 個情形 b

25. Rule Generalization

27. Taxonomy Tree

32. EC Tree of a page

36. Rule Generating 1 st : terminals: {; reservation _Symbol_ _Word_} Candidate:{; <i> _Symbol_ _HtmlTag_} perfect Disj:{<i> _HtmlTag_} positive example: D3, D4 2 nd : uncover{D1, D2} Candicate:{; _Symbol_} Extract Credit info.

37. Possible Rules

40. The STALKER Algorithm

44. Multi-pass Softmealy Chun-Nan Hsu and Chian-Chi Chang Institute of Information Science Academia Sinica Taipei, Taiwan

45. Multi-pass

46. Tabular style document (Quote Server)

47. Tagged-list style document (Internet Address Finder)

49. Tabular result (Quote Server)

50. Tagged-list result (Internet Address Finder)