OSM Node Elevation Changeset

This is a placeholder for an in progress user-generated elevation data project



FrankenPlace.com: Interactive Thematic Search

Frankenplace is an interactive thematic map search engine that uses geographic context as a means to discover, organize, and interactively visualize the documents related to a search query. More info: B. Adams, G. McKenzie, and M. Gahegan (2015) Frankenplace: Interactive Thematic Mapping for Ad Hoc Exploratory Searching. 24th...

A successful GIS day

GIS Day 2016 at the University of Maryland, College Park was a success! In the morning session, participants registered for OpenStreetMap accounts and started the process of mapping via the MissingMaps HOTOSM task manager. Jon Froehlich from the computer science department and HCIL was also on-hand to introduce Project Sidewalk. In the afternoon, Rachel Levine from the American Red Cross...

Accepting students for Fall 2017

Dr. McKenzie is currently accepting graduate students for the Fall of 2017. If you are interested in joining the team, the Center for Geospatial Information Science and the Department of Geographical Sciences at the University of Maryland, College Park, send us an email and fill out an...

GIScience 2016 in Montreal

Grant is currently at the Ninth International Conference on Geographic Information Science in Montreal, Quebec, Canada. If you are interested in the PTAL group, the Center for Geospatial Information Science or the University of Maryland, Department of Geographical Sciences, make sure to stop him... or just say 'hi.'

Grant is running the Spatial Data on the Web Workshop on Tuesday, moderating the 'Cognition and Place' session on...

"Things and Strings" accepted at EKAW 2016

Our paper titled "Things and Strings: Improving Place Name Disambiguation from Short Texts by Combining Entity Co-Occurrence with Topic Modeling" by Yiting Ju, Benjamin Adams, Krzysztof Janowicz, Yingjie Hu, Bo Yan and Grant McKenzie was accepted at the 20th International Conference on Knowledge Engineering and Knowledge Management (EKAW). This year EKAW will take place in Bologna, Italy. More on the paper below:

Place name disambiguation is the task of correctly...

Paper accepted at VOILA 2016 in Kobe, Japan

Our paper entitled "A Linked Data Driven Visual Interface for the Multi-Perspective Exploration of Data Across Repositories" was accepted at the Workshop on Visualization and Interaction for Ontologies and Linked Data (VOILA 2016) in conjunction with the International Semantic Web Conference (ISWC 2016). This paper was authored by Gengchen Mai, Krzysztof Janowicz, Yingjie Hu and Grant McKenzie.

More information on the workshop and papers at...



DEKDIV: Data Enrichment, Knowledge Discovery and Interactive Visualization Tool

A Linked-Data-driven Web portal for the field of learning analytics. The purpose of this portal is to allow users to browse Linked datasets, search for researchers, interact with dynamic visualizations, and perform in-depth analysis. Based on the provided datasets in Learning Analytics...

Citation Map


The citation Map is designed to visualize the spread of scientific ideas through space and time (i.e., How publications are cited by researchers in different countries over the years ). Mapping such geographic distributions can help discover the patterns of citations which may not be detected by simply looking at the numbers. The Citation Map has a lot of potential applications. It can...