{"title":"Effects of User Tastes on Personalized Recommendation","authors":"Liu Jian-guo","doi":"10.1142/s0129183109014825","DOIUrl":"https://doi.org/10.1142/s0129183109014825","url":null,"abstract":"Based on a weighted projection of the user-object bipartite network,the effects of user tastes on the mass-diffusion-based personalized recommendation algorithm are studied,where a user tastes or interests are defined by the average degree of the objects he has collected.It is assumed that the initial recommendation power located on the objects should be determined by both of their degree and the users tastes.By introducing a tunable parameter,the user taste effects on the configuration of initial recommendation power distribution are investigated.The numerical results show that the presented algorithm could improve the accuracy,measured by the average ranking score,more importantly.When the data is sparse,the algorithm should give more recommendation power to the objects whose degrees are close to the users tastes,while when the data becomes dense,it should assign more power on the objects whose degrees are significantly different from user's tastes.","PeriodicalId":288096,"journal":{"name":"Control Engineering of China","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128026676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Global Stability of Limit Cycles for a Class of MIMO Relay Feedback Systems","authors":"Lin Chong, Wang Qing-guo","doi":"10.1109/icca.2003.1229166","DOIUrl":"https://doi.org/10.1109/icca.2003.1229166","url":null,"abstract":"The global stability problem of limit cycles for decentralized relay feedback systems is studied.The key idea is to reduce the global stability problem to the asymptotic stability of an uncertain discrete-time system.As a result,a sufficient condition is obtained for the stability test.It shows that under some constraints all system trajectories will eventually enter and remain in a specific region,and tend to the considered limit cycle.A numerical example is given to illustarte the use of the present result.","PeriodicalId":288096,"journal":{"name":"Control Engineering of China","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116255818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}