Faced with hundreds of thousands of news articles in the news websites,it is difficult for users to find the news articles they are interested in.Therefore,various news recommender systems were built.In the news recom...Faced with hundreds of thousands of news articles in the news websites,it is difficult for users to find the news articles they are interested in.Therefore,various news recommender systems were built.In the news recommendation,these news articles read by a user is typically in the form of a time sequence.However,traditional news recommendation algorithms rarely consider the time sequence characteristic of user browsing behaviors.Therefore,the performance of traditional news recommendation algorithms is not good enough in predicting the next news article which a user will read.To solve this problem,this paper proposes a time-ordered collaborative filtering recommendation algorithm(TOCF),which takes the time sequence characteristic of user behaviors into account.Besides,a new method to compute the similarity among different users,named time-dependent similarity,is proposed.To demonstrate the efficiency of our solution,extensive experiments are conducted along with detailed performance analysis.展开更多
In the digital age, when we witness the rapid proliferation of platforms and services, European societies continue debating the role and the future of public service media （PSM）. In the new digital environment, publ...In the digital age, when we witness the rapid proliferation of platforms and services, European societies continue debating the role and the future of public service media （PSM）. In the new digital environment, public service broadcasting/media, which for a number of social and cultural reasons have been at the core of the European media system, faces the capital question--What democracy do public operators strive for and how can they accomplish it？ PSM has to be at the vanguard of the complex process of media transformation in the information society and particularly of the formation of novel journalistic culture which besides the values of ethical and innovative content should also serve the principles of good and efficient governance.展开更多
In this study, we combine an analysis of the toolsets of children＇s online news sites in three countries （the United Kingdom, Belgium, and the Netherlands） with a usability study of two of these news sites for chil...In this study, we combine an analysis of the toolsets of children＇s online news sites in three countries （the United Kingdom, Belgium, and the Netherlands） with a usability study of two of these news sites for children aged nine to 12 years old. Results show that especially nine-year-olds find it difficult to navigate through the sites and are faced with reading and comprehension difficulties. Not only nine-year-olds but also 12-year-olds with a higher reading proficiency level run into a lot of difficulties during the usability test. According to the Flesch and Flesch-Douma reading ease calculations, the text material on the sites is too difficult for the age group.展开更多
This paper looks at the professional and ethical failure of news organizations in reporting wars, conflicts, and crises Principles of press freedom, objectivity, and impartiality are not respected, and the journalism ...This paper looks at the professional and ethical failure of news organizations in reporting wars, conflicts, and crises Principles of press freedom, objectivity, and impartiality are not respected, and the journalism practice is different in times of war from in normal times. Very often, the news organization sides with the position of its country, and the journalist becomes ＂nationalistic＂ and ＂patriotic＂ and sides with his/her country＇s position towards the war at the expense of impartiality, objectivity, fairness, and ethics of journalism practices. Very often, the news media are used by the military and the political forces to frame wars and conflicts along the lines of the ＂national security＂ and ＂national interests＂. The second Gulf War, 9/11 events in 2001, the Afghan War, and the third Gulf War are used as case studies to assess the different kinds of mechanisms, techniques,＇and ＂rituals＂ practiced by the media to cover and report wars and conflicts to their audiences and world opinion. Results of the study suggest that an alternative theory--＂government press coalition theory＂——should be developed to explain journalism practices and behaviors during wars and conflicts.展开更多
基金supported by the Natural Science Foundation of China(No.61170174, 61370205)Tianjin Training plan of University Innovation Team(No.TD12-5016)
文摘Faced with hundreds of thousands of news articles in the news websites,it is difficult for users to find the news articles they are interested in.Therefore,various news recommender systems were built.In the news recommendation,these news articles read by a user is typically in the form of a time sequence.However,traditional news recommendation algorithms rarely consider the time sequence characteristic of user browsing behaviors.Therefore,the performance of traditional news recommendation algorithms is not good enough in predicting the next news article which a user will read.To solve this problem,this paper proposes a time-ordered collaborative filtering recommendation algorithm(TOCF),which takes the time sequence characteristic of user behaviors into account.Besides,a new method to compute the similarity among different users,named time-dependent similarity,is proposed.To demonstrate the efficiency of our solution,extensive experiments are conducted along with detailed performance analysis.
文摘In the digital age, when we witness the rapid proliferation of platforms and services, European societies continue debating the role and the future of public service media （PSM）. In the new digital environment, public service broadcasting/media, which for a number of social and cultural reasons have been at the core of the European media system, faces the capital question--What democracy do public operators strive for and how can they accomplish it？ PSM has to be at the vanguard of the complex process of media transformation in the information society and particularly of the formation of novel journalistic culture which besides the values of ethical and innovative content should also serve the principles of good and efficient governance.
文摘In this study, we combine an analysis of the toolsets of children＇s online news sites in three countries （the United Kingdom, Belgium, and the Netherlands） with a usability study of two of these news sites for children aged nine to 12 years old. Results show that especially nine-year-olds find it difficult to navigate through the sites and are faced with reading and comprehension difficulties. Not only nine-year-olds but also 12-year-olds with a higher reading proficiency level run into a lot of difficulties during the usability test. According to the Flesch and Flesch-Douma reading ease calculations, the text material on the sites is too difficult for the age group.
文摘This paper looks at the professional and ethical failure of news organizations in reporting wars, conflicts, and crises Principles of press freedom, objectivity, and impartiality are not respected, and the journalism practice is different in times of war from in normal times. Very often, the news organization sides with the position of its country, and the journalist becomes ＂nationalistic＂ and ＂patriotic＂ and sides with his/her country＇s position towards the war at the expense of impartiality, objectivity, fairness, and ethics of journalism practices. Very often, the news media are used by the military and the political forces to frame wars and conflicts along the lines of the ＂national security＂ and ＂national interests＂. The second Gulf War, 9/11 events in 2001, the Afghan War, and the third Gulf War are used as case studies to assess the different kinds of mechanisms, techniques,＇and ＂rituals＂ practiced by the media to cover and report wars and conflicts to their audiences and world opinion. Results of the study suggest that an alternative theory--＂government press coalition theory＂——should be developed to explain journalism practices and behaviors during wars and conflicts.
