Agenda

1
Agenda

• Wang Xuan, HYP student under Dr Kans supervision
• Undergraduate Research Project
• Augmenting Focused Crawling using Search Engine
  Queries
• Honor Year Project
• Multiple Blogs Summarization

2
Augmenting Focused Crawling using Search Engine
Queries

• Investigate in baseline system (Focused crawling)
  and improve it by introducing search engine
  queries.
• Prepare search engine queries using information
  from publication found, and get URL returned by
  search engine.

3
Augmenting Focused Crawling using Search Engine
Queries

• Evaluation results base on School of Computing
  domain show that our system outperforms the
  baseline system by a significant margin at
  certain stages of the crawl.

4
Blog Summarization For DUC 2008

• Document Understanding Conferences
• DUC 2008 Opinion Summarization Pilot
• Summarize opinions from blogs
• question-focused
• fluent summary
• gt 100 words (length TBD)
• training data from TREC 2006-2007 Blog track
• (documents tagged positive/negative/mixed
  opinion)

5
Multiple Blogs Summarization

• Summarization and Question Answering
• Given several blogs and a query, we will produce
  answer in paragraphs.
• Multiple document summarization ? extract
  relevant information to answer question.
• Extract the relevant information for question and
  combine into one paragraph ? Single document text
  summarization.

6
Blog vs. News
Blog News
May focus on many topics Focus on one topic
Opinions (evaluative) Facts (informative)
Have comments (relevant/irrelevant) No comment
May not be updated frequently Update more frequently
May not be correct More likely to be correct
More links to other pages Less links to other pages
Informal language Formal language