Research Work For This Year Investigate queries with “GROUP BY” or “COUNT” over P2P network –E.g. Count the number of copies having some requested keyword over P2P network Develop top-k queries over P2P network

P2P Top K 2005/3/- k messages Top-k 1 Top-k 2 Top-k 3 k messages If top-k2 is changed, (1)return top-k 2 ’. (2)wait reply. Top-k 2 ’ repeat Top-k 2 ’ Page 1.

P2P Top K 2005/3/- Top-k 1 Top-k 3 Top-k 2 ’ Page 2. join repeat Top-k 1 ’ join repeat Top-k

P2P Top K 2005/3/- Page 3. Top-k

3 月 25 日鍾葉青教授 4月8日4月8日王家祥教授 4 月 22 日李政崑教授 5月6日5月6日許雅三教授 5 月 20 日陳良弼教授 6月3日6月3日林華君教授 6 月 17 日陳宜欣教授 (7 月 1 日金仲達教授 )