Collective attention and ranking methods
نویسنده
چکیده
Ranking systems are becoming increasingly important in many areas, in the Web environment and academic life for instance. Presumably a ranking helps individuals to make decisions by providing them with relevant information. In a world with a tremendous amount of choices, a ranking plays also the crucial role of influencing the attention that is devoted to the various alternatives. In recurrent situations, attention will, in turn, alter the new statements on which subsequent rankings will be based. The paper proposes an analysis of this feedback by studying some reasonable dynamics that a ranking method may induce. The feedback is shown to depend strongly on the used ranking method. Two main families of methods are investigated, one based on the notion of ’handicaps’, the other one on the notion of peers’ rankings.
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