TY - JOUR AU - Du, Yajun AU - Xu, Yong AU - Wang, Min PY - 2017/02/07 Y2 - 2024/03/28 TI - A Novel Cooperation and Competition Strategy Among Multi-Agent Crawlers JF - COMPUTING AND INFORMATICS JA - Comput. Inform. VL - 35 IS - 5 SE - Articles DO - UR - https://www.cai.sk/ojs/index.php/cai/article/view/1590 SP - 1050-1078 AB - Multi-Agent theory which is used for communication and collaboration among focused crawlers has been proved that it can improve the precision of returned result significantly. In this paper, we proposed a new organizational structure of multi-agent for focused crawlers, in which the agents were divided into three categories, namely F-Agent (Facilitator-Agent), As-Agent (Assistance-Agent) and C-Agent (Crawler-Agent). They worked on their own responsibilities and cooperated mutually to complete a common task of web crawling. In our proposed architecture of focused crawlers based on multi-agent system, we emphasized discussing the collaborative process among multiple agents. To control the cooperation among agents, we proposed a negotiation protocol based on the contract net protocol and achieved the collaboration model of focused crawlers based on multi-agent by JADE. At last, the comparative experiment results showed that our focused crawlers had higher precision and efficiency than other crawlers using the algorithms with breadth-first, best-first, etc. ER -