Carmen Alvarez

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This report describes the approach used in our participation of ImageCLEF. Our focus is on image retrieval using text, i.e. Cross-Media IR. To do this, we first determine the strong relationships between keywords and types of visual features. Then the subset of images retrieved by text retrieval is used as examples to match other images according to the(More)
Previous language modeling approaches to information retrieval have focused primarily on single terms. The use of bigram models has been studied, but the restriction on word order and adjacency may not be justified for information retrieval. We propose a new language modeling approach to information retrieval that incorporates lexical affinities, or pairs(More)
Sexual communication between sexual partners is an important component in prevention efforts against unintended consequences of sex. The purpose of this study was to describe sexual communication among young adult Latinos. Four semistructured, sex-segregated focus groups were used for this study. Participants (N = 20) were 18-30 years old self-identified(More)
Most approaches to automatic motion planning can be classiied depending on the amount of information available to the robot each planning period. In the paradigm of motion planning with incomplete information, only a subset of the work environment is known by the robot each instant as given by its sensors, and no other previous knowledge of it is supposed.(More)
This paper proposes a method for the design of a dynamic path planner which utilizes fuzzy logic for navigation of mobile robots in uncertain environments. The method consists in identifying a dynamical system, with a fuzzy logic controller structure, from the examples generated by an \expert". The generator of examples will be a search algorithm on a known(More)
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