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微博是基于用户关注关系建立的具有媒体特性的实时信息分享社交平台. 微博上的信息扩散具有快速性、爆发性和时效性. 理解信息的传播机理, 预测信息转发行为, 对研究微博上舆论的形成、产品的推广等具有重要意义. 本文通过解析微博转发记录来研究影响信息转发的因素或特征, 把微博信息转发预测问题抽象为链路预测问题, 并提出基于最大熵模型的链路预测算法. 实例验证的结果表明: 1)基于最大熵模型的算法在运行时间上具有明显的优势; 2)在预测结果方面, 最大熵模型比同类其他算法表现优异; 3) 当训练集大小和特征数量变化时, 基于最大熵模型的预测结果表现稳定. 该方法在预测链路时避免了特征之间相互独立的约束, 准确率优于其他同类方法, 对解决复杂网络中其他类型的预测问题具有借鉴意义.Microblog is a social media platform, based on the follower-followee relationship, that enables users to share real-time information, by which the information propagation is characterized as rapid, explosive, and immediate. The research on the information propagation and retweet prediction is very important for public sentiment analysis and product promotion. A majority of existing works adopt several traditional prediction methods to predict the future information retweet based on the features extracted from existing retweet behaviors, which are hard to reconcile accuracy, complexity, robustness and feature extensiveness. To overcome the above mentioned shortcomings in existing works, we propose in this paper a link prediction algorithm based on maximum entropy model to predict retweet behavior on microblog. In our proposed approach, firstly we abstract the retweet prediction problem to a link prediction problem. Then we analyze the retweet behaviors on microblog and determine the factors influencing the retweet behavior. We extract the features from the retweet behaviors based on these factors in the next step. Now based on these features, the retweet behavior could be predicted by the proposed approach. However, information redundancy and other issues may exist among these features. These issues will cause an increase in computational complexity or a decrease in computational accuracy. To solve the above problems, we selecte the features dominating the retweet behavior with feature selection methods such as Information Gain, IG-CHI. The proposed model requires no further independent assumption in features or intrinsic constraints, and omits the processing in relation to features, which is usually the prerequisite of other prediction methods. We take the Sina Weibo retweet records in a time span from 2009 to 2012 as an example to test the effectiveness and efficiency of our link prediction algorithm. Results show that: 1) the proposed algorithm has incomparable advantages in running time; 2) as for the predicted result, the proposed algorithm is better than other algorithms in performance evaluations; 3) the proposed algorithm runs stably for different sizes of training sets and feature sets; 4) the accuracy of the predicted results remains stable based on the selected features. The proposed approach avoids the independent restriction among features and shows better accuracy than other similar methods, thus it has reference values for resolving other prediction problems in complex networks.
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Keywords:
- complex network /
- microblog network /
- link prediction /
- maximum entropy
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[20] Xu Z H, Yang Q 2012 Proceedings of 2012 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining Istanbul, Turkey, Aug. 26-29, 2012, p46
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[1] Watts D J, Strogatz S H 1998 Nature 393 440
[2] Barabsi A L, Albert R 1999 Science 286 509
[3] Pastor S R, Vespignani A 2001 Phys. Rev. Lett. 86 3200
[4] Wu T F, Zhou C L, Wang X H, Huang X X, Chen Z Q, Wang R B 2014 Acta Phys. Sin. 63 240501 (in Chinese) [吴腾飞, 周昌乐, 王小华, 黄孝喜, 谌志群, 王荣波 2014 63 240501]
[5] Wang J L, Liu F A, Zhu Z F 2015 Acta Phys. Sin. 64 050501 (in Chinese) [王金龙, 刘方爱, 朱振方 2015 64 050501]
[6] Wang Y Z, Zheng B H 2014 Proceedings of 2014 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining Beijing, China, Aug. 17-20, 2014, p285
[7] Zhao X Q, Tajima K 2014 Proceedings of 2014 IEEE/WIC/ACM International Joint Conferences on Web Intelligence and Intelligent Agent Technologies Warsaw, Poland, Aug. 11-14, 2014, p282
[8] Ding H Y, Wu J 2015 Proceedings of 2015 IEEE International Conference on Multimedia Big Data Beijing, China, Apr. 20-22, 2015, p56
[9] Luo Z L, Wang Y, Wu X T 2012 Proceedings of the 13th International Conference on Web Information System Engineering Paphos, Cyprus, Nov. 28-30, 2012, p777
[10] Yang Z, Guo J Y, Cai K K, Tang J, Li J Z, Zhang L, Su Z 2010 Proceedings of the 19th ACM conference on information and knowledge management Toronto, Canada, Oct. 26-30, 2010, p1633
[11] Peng H K, Zhu J, Piao D Z, Yan R, Zhang Y 2011 Proceedings of IEEE 11th International Conference on Data Mining Workshops Vancouver, Canada, Dec. 11, 2011, p336
[12] Zhao H D, Liu G, Shi C, Wu B 2014 Proceedings of 2014 IEEE International Conference on Data Mining Workshop Shenzhen, China, Dec. 14, 2014, p952
[13] Hou W, Huang Y, Zhang K 2015 Proceedings of IEEE 14th International Conference on Cognitive Informatics Cognitive Computing Beijing, China, Jul. 6-8, 2015, p255
[14] Huang D X, Zhou J, Mu D J, Yang F S 2014 Proceedings of 7th International Symposium on Computational Intelligence and Design Hangzhou, China, Dec. 13-14, 2014, p30
[15] Wu Y, Hu Y, He X H, Deng K 2014 Chin. Phys. B 23 060101
[16] Wang F, Wang H Y, Xu K 2012 Proceedings of IEEE ICDCS Workshop on Peer-to-Peer Computing and Online Social Networking Macau, China, Jun. 18-21 2012, p133
[17] Zhang L M, Pei J, Jia Y, Zhou B, Wang X 2014 Proceedings of 2014 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining Beijing, China, Aug. 17-20, 2014, p208
[18] Wu Z X, Liao J X, Zhang L J 2013 Proceedings of 5m th IEEE Conference on Broadband Network $ Multimedia Technology Guilin, China, Nov. 17-19, 2013, p119
[19] Suh B, Hong L C, Pirolli P, Chi E D H 2010 Proceedings of The 2010 IEEE International Conference on Privacy, Security, Risk and Trust Minneapolis, USA, Aug. 20-22, 2010, p177
[20] Xu Z H, Yang Q 2012 Proceedings of 2012 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining Istanbul, Turkey, Aug. 26-29, 2012, p46
[21] Leicht E A, Holme P, Newman M E J 2006 Phys. Rev. E 73 026120
[22] Liben-Nowell D, Kleinberg J 2007 J. Am. Soc. Inf. Sci. Tec. 58 1019
[23] L L Y, Zhou T 2011 Physica A 390 1150
[24] Bai M, Hu K, Tang Y 2011 Chin. Phys. B 20 128902
[25] Brin S, Page L 1998 Comput. Netw. ISDN Syst. 30 107
[26] Lorrain F, White H C 1971 J. Math. Soc. 1 49
[27] Liu W P, L L Y 2010 Europhys. Lett. 89 58007
[28] Berger A L, Pietra S, Pietra V 1996 Comput. Linguist. 22 39
[29] Byrd R H, Nocedal J, Schnabel R B 1994 Math. Program.: Series A and B 63 4
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