نتایج جستجو برای: exploratory

تعداد نتایج: 51387  

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1992
J N Crawley

Subtype-selective antagonists of the peripheral-type (CCK-A) and the central-type (CCK-B) cholecystokinin (CCK) receptors were employed to determine the receptor subtype(s) mediating the modulatory actions of CCK on dopamine-induced changes in exploratory activity at three sites in the mesolimbic pathway of the rat. The CCK-A antagonist L-364,718 (10 ng) blocked CCK potentiation of dopamine-ind...

2007
Rick Walker Peter Kenny Jingqi Miao

Exploratory simulation involves the combination of computational steering and visualization at interactive speeds.This presents a number of challenges for large scientific data sets, such as those from astrophysics. A computational model is required such that steering the simulation while in progress is both physically valid and scientifically useful. Effective and appropriate visualization and...

2015
Brian D. Haig

Despite the importance of exploratory data analysis (EDA) in statistics and science, few people have worked on its philosophical foundations. In psychology, the present author (Haig, 2012; Behrens et al., 2013) have commented on philosophical aspects of EDA. They hold contrasting views about the appropriateness of abductive reasoning as a core component of the philosophy of EDA. Behrens and his...

2003
Daniel B. Fox

The chapter has three sections. The first of these describes the evolving defense environment, to show the need for tools that allow analysis of situations dominated by uncertainty. It also briefly discusses combat models in general and the Joint Integrated Contingency Model (JICM) in particular, covering some features of the JICM that make it especially suitable for exploratory modeling. Final...

2007
Omar Alonso Ricardo Baeza-Yates Michael Gertz

As search applications keep gathering new and diverse information sources, presenting relevant information anchored in time becomes more important. Temporal information is available in every document either explicitly, e.g., in the form of temporal expressions, or implicitly in the form of metadata. Recognizing such temporal information and exploiting it for document retrieval and presentation ...

2007
Larry Smith

Chapter Overview In this chapter, an introductory description of the exploration of genomic data is given. Rather than attempt an exhaustive overview of the types of genomic data and methods of analysis, the chapter focuses on one type of data, gene expression profiling by microarray technology, and one method of analysis, cluster analysis for discovering and sorting mixed populations. This typ...

2001
Andrea Bunt Cristina Conati

In this paper we propose a user model that aims to assess the user's exploratory behaviour in an open environment. The model is based on a Bayesian Network and consists of several components that allow diagnosis of the causes of poor exploratory behaviour. Among these components are the user's knowledge of exploration strategies, the user's motivation level, personality traits and emotional sta...

Journal: :Pattern Recognition Letters 2005
Martin Brown Nicholas Costen

Feature selection is a fundamental process in many classifier design problems. However, it is NP-complete and approximate approaches often require requires extensive exploration and evaluation. This paper describes a novel approach that represents feature selection as a continuous regularization problem which has a single, global minimum, where the model s complexity is measured using a 1-norm ...

2005
Stefan Evert

Lexical collocations are a fuzzy phenomenon that has not yet been satisfactorily explained by linguistic theory. At the same time, they are important both for understanding the structure of language and for many applications such as lexicography and natural language processing. Corpus-based studies of collocations as well as collocation extraction tools have been influenced by two basic views: ...

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