In this paper, we present a novel Support Vector Machine active learning algorithm for effective 3D model retrieval using the concept of relevance feedback. The proposed method learns from the most informative objects...In this paper, we present a novel Support Vector Machine active learning algorithm for effective 3D model retrieval using the concept of relevance feedback. The proposed method learns from the most informative objects which are marked by the user, and then creates a boundary separating the relevant models from irrelevant ones. What it needs is only a small number of 3D models labelled by the user. It can grasp the user＇s semantic knowledge rapidly and accurately. Experimental results showed that the proposed algorithm significantly improves the retrieval effectiveness. Compared with four state-of-the-art query refinement schemes for 3D model retrieval, it provides superior retrieval performance after no more than two rounds of relevance feedback.展开更多
Based on the data of 1950 – 1999 monthly global SST from Hadley Center, NCAR/NCEP reanalysis data and rainfall over 160 weather stations in China, investigation is conducted into the difference of summer rainfall in ...Based on the data of 1950 – 1999 monthly global SST from Hadley Center, NCAR/NCEP reanalysis data and rainfall over 160 weather stations in China, investigation is conducted into the difference of summer rainfall in China (hereafter referred to as the "CS rainfall") between the years with the Indian Ocean Dipole (IOD) occurring independently and those with IOD occurring along with ENSO so as to study the effects of El Ni?o - Southern Oscillation (ENSO) on the relationship between IOD and the CS rainfall. It is shown that CS rainfall will be more than normal in South China (centered in Hunan province) in the years of positive IOD occurring independently; the CS rainfall will be less (more) than normal in North China (Southeast China) in the years of positive IOD occurring together with ENSO. The effect of ENSO is offsetting (enhancing) the relationship between IOD and summer rainfall in Southwest China, the region joining the Yangtze River basin with the Huaihe River basin (hereafter referred to as the "Yangtze-Huaihe basin") and North China (Southeast China). The circulation field is also examined for preliminary causes of such an influence.展开更多
The purpose of this paper is to analyze today＇s construction of sports news, and to see the way that media present the live sports events and how do livc sports events become global breaking news. We started with the...The purpose of this paper is to analyze today＇s construction of sports news, and to see the way that media present the live sports events and how do livc sports events become global breaking news. We started with the theoretical background and we analyzed the audiences of the TV channels dedicated to sports. Media and violence is a well-known subject, and many theorists have analysed it but little research has been conducted about the effects that violence in sport news may have on people or society. Therefore, the aim of this study is to provide insights into these effects, to try to demonstrate that today＇s sports news does not focus on pcrformancc any more, but they have become a spectacle of violence and gossip. After reviewing the literature in order to gain a perspective on this topic, we focused on the complex reconstructive and subjective nature of news rcception, the different ways the audience constructs meaningful intcrpretations from the news, exposure to news and the construction of violent images of reality.展开更多
Expressions of emotion in the media, especially in the context of news, are often criticized as promoting irrational attitudes. For supporters of this kind of criticism, rather than addressing such emotional sensitivi...Expressions of emotion in the media, especially in the context of news, are often criticized as promoting irrational attitudes. For supporters of this kind of criticism, rather than addressing such emotional sensitivity, journalism should be objective, appealing to the rationality of the public. Anger, indignation, enthusiasm, and expressions of joy or sadness should not have part in public debates. From this perspective, rationality and emotions are opposed, the former being fundamental for the constitution of the public sphere, while the latter falls into the category of inner impulses. While Kant denied any sort of rationality to emotions, Gustave Lebon attributed emotional attitudes to crowds rather than to a public. In a crowd, emotions spread like an epidemic through a kind of contagion. The present study is based on a contrasting perspective and focuses on the rationality of emotions＇, whether in philosophy （Nussbaum）, sociology （Paperman, Aranguren 2014; Livet 2002）, or psychology （Krant-Gruber）. Oddly enough, these different approaches do not seem to have affected media studies where, belief in the irrationality of emotions, still dominates analyses of media coverage of natural or industrial catastrophes, wars, or terrorist attacks. Instead of considering the nature of emotions, or the question of whether they actually corrupt the objectivity of journalism and the supposed rationality of public debates, I will seek to develop a pragmatist approach to the question of what, emotions actually do. In fact, the idea of emotions spreading contagiously had been disputed since the 18th century when Adam Smith asked how a British newspaper reader could be affected by an earthquake happening in China. Suffering from a distance, says Adam Smith, is not the product of some kind of contagion. If we want to understand this sort of feeling, we have to imagine an inner moral spectator inside of every human being Oddly enough, Adam Smith considers emotions to be moral feelings. To feel horrified by the consequences of an earthquake, or to feel indignant about the death of innocent victims, are moral attitudes. In this respect, they are rational, but the feelings of indignation or horror also include bodily reactions. We scream, put our hands over our mouths; we blush, have tears in our eyes; we feel our heartbeat accelerate etc. These bodily reactions seem impulsive and entirely subjective, but to what extent can we say that they are rational or moral？展开更多
基金the National Basic Research Program (973) of China (No. 2004CB719401)the National Research Foundation for the Doctoral Program of Higher Education of China (No.20060003060)
文摘In this paper, we present a novel Support Vector Machine active learning algorithm for effective 3D model retrieval using the concept of relevance feedback. The proposed method learns from the most informative objects which are marked by the user, and then creates a boundary separating the relevant models from irrelevant ones. What it needs is only a small number of 3D models labelled by the user. It can grasp the user＇s semantic knowledge rapidly and accurately. Experimental results showed that the proposed algorithm significantly improves the retrieval effectiveness. Compared with four state-of-the-art query refinement schemes for 3D model retrieval, it provides superior retrieval performance after no more than two rounds of relevance feedback.
基金National Science Foundation of China (40475028)a project from Key Laboratory of Meteorological Disaster of Jiangsu Province (KLME060210)
文摘Based on the data of 1950 – 1999 monthly global SST from Hadley Center, NCAR/NCEP reanalysis data and rainfall over 160 weather stations in China, investigation is conducted into the difference of summer rainfall in China (hereafter referred to as the "CS rainfall") between the years with the Indian Ocean Dipole (IOD) occurring independently and those with IOD occurring along with ENSO so as to study the effects of El Ni?o - Southern Oscillation (ENSO) on the relationship between IOD and the CS rainfall. It is shown that CS rainfall will be more than normal in South China (centered in Hunan province) in the years of positive IOD occurring independently; the CS rainfall will be less (more) than normal in North China (Southeast China) in the years of positive IOD occurring together with ENSO. The effect of ENSO is offsetting (enhancing) the relationship between IOD and summer rainfall in Southwest China, the region joining the Yangtze River basin with the Huaihe River basin (hereafter referred to as the "Yangtze-Huaihe basin") and North China (Southeast China). The circulation field is also examined for preliminary causes of such an influence.
文摘The purpose of this paper is to analyze today＇s construction of sports news, and to see the way that media present the live sports events and how do livc sports events become global breaking news. We started with the theoretical background and we analyzed the audiences of the TV channels dedicated to sports. Media and violence is a well-known subject, and many theorists have analysed it but little research has been conducted about the effects that violence in sport news may have on people or society. Therefore, the aim of this study is to provide insights into these effects, to try to demonstrate that today＇s sports news does not focus on pcrformancc any more, but they have become a spectacle of violence and gossip. After reviewing the literature in order to gain a perspective on this topic, we focused on the complex reconstructive and subjective nature of news rcception, the different ways the audience constructs meaningful intcrpretations from the news, exposure to news and the construction of violent images of reality.
文摘Expressions of emotion in the media, especially in the context of news, are often criticized as promoting irrational attitudes. For supporters of this kind of criticism, rather than addressing such emotional sensitivity, journalism should be objective, appealing to the rationality of the public. Anger, indignation, enthusiasm, and expressions of joy or sadness should not have part in public debates. From this perspective, rationality and emotions are opposed, the former being fundamental for the constitution of the public sphere, while the latter falls into the category of inner impulses. While Kant denied any sort of rationality to emotions, Gustave Lebon attributed emotional attitudes to crowds rather than to a public. In a crowd, emotions spread like an epidemic through a kind of contagion. The present study is based on a contrasting perspective and focuses on the rationality of emotions＇, whether in philosophy （Nussbaum）, sociology （Paperman, Aranguren 2014; Livet 2002）, or psychology （Krant-Gruber）. Oddly enough, these different approaches do not seem to have affected media studies where, belief in the irrationality of emotions, still dominates analyses of media coverage of natural or industrial catastrophes, wars, or terrorist attacks. Instead of considering the nature of emotions, or the question of whether they actually corrupt the objectivity of journalism and the supposed rationality of public debates, I will seek to develop a pragmatist approach to the question of what, emotions actually do. In fact, the idea of emotions spreading contagiously had been disputed since the 18th century when Adam Smith asked how a British newspaper reader could be affected by an earthquake happening in China. Suffering from a distance, says Adam Smith, is not the product of some kind of contagion. If we want to understand this sort of feeling, we have to imagine an inner moral spectator inside of every human being Oddly enough, Adam Smith considers emotions to be moral feelings. To feel horrified by the consequences of an earthquake, or to feel indignant about the death of innocent victims, are moral attitudes. In this respect, they are rational, but the feelings of indignation or horror also include bodily reactions. We scream, put our hands over our mouths; we blush, have tears in our eyes; we feel our heartbeat accelerate etc. These bodily reactions seem impulsive and entirely subjective, but to what extent can we say that they are rational or moral？
