计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2014年
11期
36-41
,共6页
Deffuant模型%优先选择%记忆效应%观点动力学%非均匀网络
Deffuant模型%優先選擇%記憶效應%觀點動力學%非均勻網絡
Deffuant모형%우선선택%기억효응%관점동역학%비균균망락
Deffuant model%priority selection%memory effect%opinion dynamics%non-uniform network
针对社会群体中观点共享的现象，考虑节点间交互存在偏好选择(优先选择)，以及节点对异己观点存在记忆效应，扩展Deffuant模型，建立一种新的观点动力学模型。采用优先选择策略，使非均匀网络达成一致观点；在网络只选用优先选择策略而不考虑节点记忆效应时，网络一致性观点的形成仍依赖于置信值的取值。在网络考虑节点记忆效应后，不仅能够促进网络达成一致观点，而且在置信值很小的情况下，网络也能达成一致观点。研究结果表明，随着置信值的增加，网络达成一致观点所需的最小观点更新次数逐渐减少。
針對社會群體中觀點共享的現象，攷慮節點間交互存在偏好選擇(優先選擇)，以及節點對異己觀點存在記憶效應，擴展Deffuant模型，建立一種新的觀點動力學模型。採用優先選擇策略，使非均勻網絡達成一緻觀點；在網絡隻選用優先選擇策略而不攷慮節點記憶效應時，網絡一緻性觀點的形成仍依賴于置信值的取值。在網絡攷慮節點記憶效應後，不僅能夠促進網絡達成一緻觀點，而且在置信值很小的情況下，網絡也能達成一緻觀點。研究結果錶明，隨著置信值的增加，網絡達成一緻觀點所需的最小觀點更新次數逐漸減少。
침대사회군체중관점공향적현상，고필절점간교호존재편호선택(우선선택)，이급절점대이기관점존재기억효응，확전Deffuant모형，건립일충신적관점동역학모형。채용우선선택책략，사비균균망락체성일치관점；재망락지선용우선선택책략이불고필절점기억효응시，망락일치성관점적형성잉의뢰우치신치적취치。재망락고필절점기억효응후，불부능구촉진망락체성일치관점，이차재치신치흔소적정황하，망락야능체성일치관점。연구결과표명，수착치신치적증가，망락체성일치관점소수적최소관점경신차수축점감소。
Opinions sharing or reaching consensus is a common social phenomenon. In consideration of the facts that nodes prefer to select certain nodes to communicate and they have memory for viewpoints which are different from their own,this paper tries to establish a novel opinion dynamics model by extending the Deffuant model. Priority selection strategy and the memory effect of node are adopted in the model. And it studies the influences of these two factors on network opinion formation. Experimental results show that the proposed model adopting priority selection strategy helps consensus formation in non-uniform network. But when the network adopts the priority selection strategy without considering memory effect,the formation of consensus still depends on threshold. And the joining of the memory effect not only can promote formation of network consensus, but also can make the network reach consensus at a small threshold. Research results show that with the increasing of the threshold,the smallest opinion updating time threshold to reach consensus decreases.
