On last Wednesday, March 31, GMAP researcher Cleverson Lopes Ledur presented his Master thesis dissertation at the Faculty of Informatics of the Pontifical Catholic University of Rio Grande do Sul. The presentation took place in room 502 of building 32 at 05:30 pm.
Dissertation title and abstract:
Title: GMaVis: The Domain-Specific Language for Large-Scale Geospatial Data Visualization Supporting Multi-core Parallelism
Abstract: Data production has increased in recent years due to the popularization of technology. At the same time, information visualization enables the extraction of knowledge and useful information through data representation with graphic elements. Moreover, a set of visualization techniques may help people in information perception, such as patterns and anomalies on data. It provides many benefits, however, the information visualization creation is a hard task for users with a low knowledge in computer programming. It becomes more difficult when these users have to deal with big data files since most tools do not provide features to abstract data preprocessing. In order to bridge this gap, we proposed GMaVis. It is a domain-specific language (DSL) that offers a high-level description language for creating geospatial data visualizations through a parallel data preprocessor and a high-level description language. GMaVis was evaluated using two approaches. First we performed a programming effort analysis, using an analytical software to estimate development effort based on the code. This evaluation demonstrates a high gain in productivity when compared with programming effort required by Google Maps API, Leaflet, and OpenLayers. Also, a performance evaluation was conducted in parallel data preprocessor, which demonstrated a performance gain when compared with the sequential version.
Master Advisor: Prof. Dr. Luiz Gustavo Leão Fernandes
Co-advisor: Prof. Dr. Isabel Harb Manssour (PPGCC / PUCRS)
Examining Committee: Prof. Dr. Avelino Francisco Zorzo (PPGCC / PUCRS), Prof. Dr. Marco Danelutto (University of Pisa) and Prof. Dr. Maria Carla Dal Sasso Freitas (UFRGS).
Photo taken by occasion of Master degree student Cleverson Ledur's thesis presentation.
Left to right, Prof. Dr. Marco Danelutto, student Cleverson Ledur, Prof. Dr. Maria Carla Dal Sasso Freitas,
Prof. Dr. Luiz Gustavo Leão Fernandes and Prof. Dr. Isabel Harb Manssour