Thematic Place Types

Oct 3, 2017


The project introduces an interactive platform for exploring thematic place types. Users can investigate the impact of time on thematic regions to better understand the urban dynamics involved in a city. The underlying data is based on approximately 3 million geosocial media check-ins from across the United States.


ISED: Constructing a high-resolution elevation road dataset from massive, low-quality in-situ observations derived from geosocial fitness tracking data

Oct 3, 2017

Our paper entitle "ISED: Constructing a high-resolution elevation road dataset from massive, low-quality in-situ observations derived from geosocial fitness tracking data" was recently accepted for publication in the open access journal PLoS ONE.

Gaining access to inexpensive, high-resolution, up-to-date, three-dimensional road network data is a top priority beyond research, as such data would fuel applications in industry, governments, and the broader public alike....

New vision paper on #AlternativeFacts

Aug 29, 2017

Our vision paper on Alternative Facts was accepted for publication at this year's ACM SIGSPATIAL conference in Redondo Beach, CA

Abstract: Following the AAA principle by which anybody can say anything about any topic, the Web is no stranger to alternative facts. Nonetheless, with the increasing volume and velocity at which content is being published and difficulties to assess the credibility of information and the trustworthiness of sources, alternative facts are...

OSM Node Elevation Changeset

Feb 25, 2017

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


Nov 17, 2016

PROJECT BRIEF 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

Nov 17, 2016

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

Oct 3, 2016

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

Sep 27, 2016

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

Sep 7, 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...