, specifically designed to test predictions from this extension of the theory, have now been completed Hypothesis I: There exists, in the human organism, a drive to evaluate his opinions and his abilities. While opinions and abilities may, at first glance, seem to be quite different things, there is a close

Abstract not found

This paper uses a social psychological perspective to study the effectiveness of different media of communication and how they influence interactions in social groups and organizations. In particular, we are interested in the social richness of the media— how effectively they convey the personalities and intentions of their users. We studied CMC (email and chat) and voice telephony, and compared them with face-to-face interaction. Study 1 was a controlled laboratory study in which people got acquainted with a partner. Study 2 was a field survey in which employees reported on naturally occurring interactions at work that took place with people of varying levels of power (supervisor, peer, subordinate). The surprising result is that the telephone generally came out on top in both studies, suggesting that the telephone may provide the optimum blend of richness and presence for natural and satisfying interactions. Categories and Subject Descriptors H.5.3 [Information Interfaces and Presentation (e.g., HCI)]:

from spam. We first select a small set of seed pages to be evaluated by an expert. Once we manually identify the reputable seed pages, we use the link structure of the web to discover other pages that are likely to be good. In this paper we discuss possible ways to implement the seed selection

In many supervised learning tasks, the entities to be labeled are related to each other in complex ways and their labels are not independent. For example, in hypertext classification, the labels of linked pages are highly correlated. A standard approach is to classify each entity independently

In this paper we study in what order a crawler should visit the URLs it has seen, in order to obtain more “important” pages first. Obtaining important pages rapidly can be very useful when a crawler cannot visit the entire Web in a reasonable amount of time. We define several importance metrics

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Church of Sassella at Sondrio (details), second half of the nineteenth century