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Discovering Geographic Regions in the City Using Social Multimedia and Open Data
- Source :
- MultiMedia Modeling: 23rd International Conference, MMM 2017, Reykjavik, Iceland, January 4-6, 2017 : proceedings, 2, 148-159, MultiMedia Modeling ISBN: 9783319518138, MMM (2)
- Publication Year :
- 2017
- Publisher :
- Springer, 2017.
-
Abstract
- In this paper we investigate the potential of social multimedia and open data for automatically identifying regions within the city. We conjecture that the regions may be characterized by specific patterns related to their visual appearance, the manner in which the social media users describe them, and the human mobility patterns. Therefore, we collect a dataset of Foursquare venues, their associated images and users, which we further enrich with a collection of city-specific Flickr images, annotations and users. Additionally, we collect a large number of neighbourhood statistics related to e.g., demographics, housing and services. We then represent visual content of the images using a large set of semantic concepts output by a convolutional neural network and extract latent Dirichlet topics from their annotations. User, text and visual information as well as the neighbourhood statistics are further aggregated at the level of postal code regions, which we use as the basis for detecting larger regions in the city. To identify those regions, we perform clustering based on individual modalities as well as their ensemble. The experimental analysis shows that the automatically detected regions are meaningful and have a potential for better understanding dynamics and complexity of a city.
- Subjects :
- Topic model
Computer science
020207 software engineering
02 engineering and technology
Visual appearance
Convolutional neural network
Data science
Open data
Urban computing
0202 electrical engineering, electronic engineering, information engineering
020201 artificial intelligence & image processing
Social media
Cluster analysis
Neighbourhood (mathematics)
Subjects
Details
- Language :
- English
- ISBN :
- 978-3-319-51813-8
- ISBNs :
- 9783319518138
- Database :
- OpenAIRE
- Journal :
- MultiMedia Modeling: 23rd International Conference, MMM 2017, Reykjavik, Iceland, January 4-6, 2017 : proceedings, 2, 148-159, MultiMedia Modeling ISBN: 9783319518138, MMM (2)
- Accession number :
- edsair.doi.dedup.....fc2fa26599e38798363892235b0bcc16