A tremendous amount of information is being shared every day on social media sites such as Facebook, Twitter or Google+. However, only a small portion of users provide their location information, which can be helpful in targeted advertising and many other services. Current methods in location estimation using social relationships consider social friendship as a simple binary relationship. Howev...

The collection of speech data suitable for speech technology development is a challenge for under-resourced languages. Factors such as cost, availability of mother-tongue speakers and vast geographic distances call for techniques to optimise the data collection process in order to reduce re-collection of data. The use of mobile devices facilitate remote speech data collection. Although mobile (...

Recently, much research eeort has been employed in the area of Geographic Information Systems due to the vast potential for applications of this technology. Simultaneously , user interface subsystems of software products have received attention since the interface has marked innuence in software acceptance. This paper presents an overview of research done in the intersection of these areas. The...

Recently, much research eeort has been employed in the area of Geographic Information Systems due to the vast potential for applications of this technology. Simultaneously , user interface subsystems of software products have received attention since the interface has marked innuence in software acceptance. This paper presents an overview of research done in the intersection of these areas. The...

The high complexity and diversity of today’s design projects requires the participation of various modelers and designers. The participants can influence the design process by sharing their perspective, expertise and resources. The involvement of various designers is often known as collaborative modeling and design. A collaborative modeling environment can encompass various geographical or orga...

INTRODUCTION Our department commonly uses a planning target volume (PTV) expansion of 6 mm posterior and 1 cm in all other directions when treating prostate cancer patients with image-guided radiotherapy (IGRT). This study aimed to test the adequacy of this PTV expansion by assessing geographical miss of the prostate on post-treatment cone-beam CT (CBCT) and identify those at risk of geographic...

This paper investigates the state of municipalities’ websites in fifty major Greek cities. First, it presents GovQual, a comprehensive evaluation framework which consists of 140 criteria organized into 13 evaluation categories. Then, fifteen trained students evaluated fifty Greek municipalities’ sites using GovQual. The results identified significant shortages related to the sites’ Interactivit...

We describe an approach for connecting language and geography that anchors natural language expressions to specific regions of the Earth, implemented in our TextGrounder system. The core of the system is a region-topic model, which we use to learn word distributions for each region discussed in a given corpus. This model performs toponym resolution as a by-product, and additionally enables us t...

In this poster we present visualizations of the UNHCR Refugee Dataset produced with JFlowMap, a graphical tool for the visualization and exploration of spatial interactions and their development in time. The basic view provided by the tool is the flow map which represents entities flowing between geographical locations with lines connecting the flow sources and the destinations. We show example...

We present an algorithm to find optimal routes in a multi-modal public transportation network. Our model takes into account many realistic features such as walking between multi-modal stations, transfer times, traffic days, multiple objectives and finding connections between geographical locations rather than just source and destination stations. In order to provide useful routing directions, w...