TY - GEN
T1 - The evaluations of FTF-IDF scoring for fresh information retrieval
AU - Sato, Nobuyoshi
AU - Uehara, Minoru
AU - Sakai, Yoshifumi
PY - 2005/12/1
Y1 - 2005/12/1
N2 - Fresh information is important for real business. However, conventional search engines are not suited for fresh information retrieval because they are based on centralized architecture. So, we have developed a distributed search engine, Cooperative Search Engine (CSE), which based on distributed architecture. CSE can search fresh information in a short time. The cost of fresh information retrieval is O(1) in the average case, but O(n) in the worst case. So, CSE is scalable, because it is not depended on the system scale. However, even if the performance is good, it is not enough for fresh information retrieval. The value of information is determined by both freshness and relevance. Traditional ranking methods consider either freshness or relevance. So, we propose FTF-IDF scoring which considers both freshness and relevance. In this paper, we evaluate its effects.
AB - Fresh information is important for real business. However, conventional search engines are not suited for fresh information retrieval because they are based on centralized architecture. So, we have developed a distributed search engine, Cooperative Search Engine (CSE), which based on distributed architecture. CSE can search fresh information in a short time. The cost of fresh information retrieval is O(1) in the average case, but O(n) in the worst case. So, CSE is scalable, because it is not depended on the system scale. However, even if the performance is good, it is not enough for fresh information retrieval. The value of information is determined by both freshness and relevance. Traditional ranking methods consider either freshness or relevance. So, we propose FTF-IDF scoring which considers both freshness and relevance. In this paper, we evaluate its effects.
KW - Distributed search engine
KW - Web information retrieval
UR - http://www.scopus.com/inward/record.url?scp=33744485058&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33744485058&partnerID=8YFLogxK
U2 - 10.1109/AINA.2005.326
DO - 10.1109/AINA.2005.326
M3 - Conference contribution
AN - SCOPUS:33744485058
SN - 0769522491
SN - 9780769522494
T3 - Proceedings - International Conference on Advanced Information Networking and Applications, AINA
SP - 635
EP - 640
BT - Proceedings - 19th International Conference on Advanced Information Networking and Applications, AINA 2005
T2 - 19th International Conference on Advanced Information Networking and Applications, AINA 2005
Y2 - 28 March 2005 through 30 March 2005
ER -