Cluster analysis is a primary method for database mining. It is either used as a stand-alone tool to get insight into the distribution of a data set, e.g. to focus further analysis and data processing, or as a preprocessing step for other algorithms operating on the detected clusters. Almost all

MicroRNAs (miRNAs) constitute a large family of noncod-ing RNAs that function as guide molecules in diverse gene silencing pathways. Current efforts are focused on the regulatory function of miRNAs, while little is known about how these unusual genes themselves are regulated. Here we present

. Although primary care came to be the cornerstone of the health services system in the United Kingdom as well as in many other countries, no comparable focus developed in the United States. Indeed, the formation of one after another specialty board

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The paper presents four approaches to evaluation for assessing situations and outcomes where simple linear cause and effect analysis is not useful or possible. Typically they address situations at the interface of human uses of agricultural and natural resources. The strengths and limitations of each for the evaluation of FFS are discussed. They are embedded in theories of systems learning and are oriented toward the facilitation of change through action-oriented discourse among those who have a stake in the change process. Potentially, nos. 3 and 4 are pivotal, in allowing information to be incorporated in a dialogic platform (social space) that could inform action at higher decision levels.

We study the problem of detecting objects in still, grayscale images. Our primary focus is development of a learning-based approach to the problem, that makes use of a sparse, part-based representation. A vocabulary of distinctive object parts is automatically constructed from a set of sample

We describe an information seeking assistant for the world wide web. This agent, called WebWatcher, interactively helps users locate desired information by employing learned knowledge about which hyperlinks are likely to lead to the target information. Our primary focus to date has been on two

, both because an NFS appliance must be optimized for network file access and because an appliance must be easy to use. This paper describes WAFL (Write Anywhere File Layout), which is a file system designed specifically to work in an NFS appliance. The primary focus is on the algorithms and data

micro-macro link, to aspects of universality, and to other unifying concepts, such as a general modeling framework for self-driven many-particle systems, including spin systems. While the primary focus is upon vehicle and pedestrian traffic, applications to biological or socio-economic systems

be sparser, and can have greater flexibility in matching structure in the data. Overcomplete codes have also been proposed as a model of some of the response properties of neurons in primary visual cortex. Previous work has focused on finding the best representation of a signal using a fixed overcomplete