10 Result(s)
within
English
Computer Science
Artificial Intelligence
Ana Alves
Conference Paper
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Chapter and Conference Paper
Conceptual Enrichment of Locations Pointed Out by the User
The growing availability of GPS and localization technologies opens up new challenges regarding the use of position information for Location Based Services. As a side effect, several research questions arise, ...
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Chapter and Conference Paper
Semantics of Place: Ontology Enrichment
In this paper, we present an approach to a challenge well known from the area of Ubiquitous Computing: extracting meaning out of geo-referenced information. The importance of this “semantics of place” problem ...
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Chapter and Conference Paper
Towards the Improvement of a Topic Model with Semantic Knowledge
Although typically used in classic topic models, surface words cannot represent meaning on their own. Consequently, redundancy is common in those topics, which may, for instance, include synonyms. To face this...
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Chapter and Conference Paper
Automatic POI Matching Using an Outlier Detection Based Approach
Points of Interest (POI) are widely used in many applications nowadays mainly due to the increasing amount of related data available online, notably from volunteered geographic information (VGI) sources. Being...
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Chapter and Conference Paper
Characterization of Individual Mobility for Non-routine Scenarios from Crowd Sensing and Clustered Data
Demand for leisure activities has increased due to some reasons such as increasing wealth, ageing populations and changing lifestyles, however, the efficiency of public transport system relies on solid demand ...
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Chapter and Conference Paper
Recognizing Humor in Portuguese: First Steps
Within the domain of Artificial Intelligence, humor has been a research topic for some time, but the automatic recognition of its verbal expression has never been tackled for Portuguese. This work aims to chan...
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Chapter and Conference Paper
Exploring Portuguese Word Embeddings for Discovering Lexical-Semantic Relations
Word2vec-like word embeddings are known for kee** linguistic regularities and thus good for solving analogies. Following this, we explore such embeddings for Portuguese in the discovery of lexical-semantic ...
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Chapter and Conference Paper
Leveraging on Semantic Textual Similarity for Develo** a Portuguese Dialogue System
We describe an IR-based dialogue system that, in order to match user interactions with FAQs on a list, leverages on a model for computing the semantic similarity between two fragments of Portuguese text. It w...
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Chapter and Conference Paper
Generating the Users Geographic Map Using Mobile Phone Data
Spatial data on human activity, including mobile phone data, has the potential to provide patterns of how the citizens use the urban space. The availability of this data boosted research on city dynamics and h...
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Chapter and Conference Paper
Using CDR Data to Understand Post-pandemic Mobility Patterns
During the COVID-19 pandemic, the measures imposed to slow the spread of the virus had a profound impact on population dynamics around the world, producing unprecedented changes in mobility. Spatial data on hu...
