Research Publications

Highlighted

Model Ensemble With Dropout for Uncertainty Estimation in Sea Ice Segmentation Using Sentinel-1 SAR
Model Ensemble With Dropout for Uncertainty Estimation in Sea Ice Segmentation Using Sentinel-1 SAR
Rafael Pires de Lima, Morteza Karimzadeh
IEEE Transactions on Geoscience and Remote Sensing   ·   01 Jan 2023   ·   doi:10.1109/TGRS.2023.3331276
Preprint
Repo
sea ice cryosphere uncertainty remote sensing machine learning

All

2025

High-Resolution Estimation of Daily PM2.5 Levels in the Contiguous US Using Bi-LSTM with Attention
High-Resolution Estimation of Daily PM2.5 Levels in the Contiguous US Using Bi-LSTM with Attention
Zhongying Wang, James L. Crooks, Elizabeth Anne Regan, Morteza Karimzadeh
Remote Sensing   ·   02 Jan 2025   ·   doi:10.3390/rs17010126
spatiotemporal machine learning remote sensing public health air pollution

2024

Assessing vulnerability for future Zika virus outbreaks using seroprevalence data and environmental suitability maps
Assessing vulnerability for future Zika virus outbreaks using seroprevalence data and environmental suitability maps
Yannik Roell, Laura Pezzi, Anyela Lozano-Parra, Daniel Olson, Jane Messina, Talia Quandelacy, Jan Felix Drexler, Oliver Brady, Morteza Karimzadeh, Thomas Jaenisch
PLOS Neglected Tropical Diseases   ·   22 Mar 2024   ·   doi:10.1371/journal.pntd.0012017
spatial analysis visualization public health Zika Arbovirus
Assessing vulnerability for future Zika virus outbreaks using seroprevalence data and environmental suitability maps
Assessing vulnerability for future Zika virus outbreaks using seroprevalence data and environmental suitability maps
Yannik Roell, Laura Pezzi, Anyela Lozano‐Parra, Daniel G. Olson, Jane P. Messina, Talía M. Quandelacy, Jan Felix Drexler, Oliver J. Brady, Morteza Karimzadeh, Thomas Jaenisch
OpenAlex   ·   22 Mar 2024   ·   doi:10.60692/zjk6x-4tj41
OptiBreathe: An Earable-based PPG System for Continuous Respiration Rate, Breathing Phase, and Tidal Volume Monitoring
OptiBreathe: An Earable-based PPG System for Continuous Respiration Rate, Breathing Phase, and Tidal Volume Monitoring
Julia Romero, Andrea Ferlini, Dimitris Spathis, Ting Dang, Katayoun Farrahi, Fahim Kawsar, Alessandro Montanari
Proceedings of the 25th International Workshop on Mobile Computing Systems and Applications   ·   28 Feb 2024   ·   doi:10.1145/3638550.3641136
Full-text on ResearchGate
wearable devices
Partial Label Learning With Focal Loss for Sea Ice Classification Based on Ice Charts
Partial Label Learning With Focal Loss for Sea Ice Classification Based on Ice Charts
Behzad Vahedi, Benjamin Lucas, Farnoush Banaei-Kashani, Andrew P. Barrett, Walter N. Meier, Siri Jodha Singh Khalsa, Morteza Karimzadeh
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing   ·   01 Jan 2024   ·   doi:10.1109/JSTARS.2024.3413003
Repo
sea ice cryosphere remote sensing uncertainty machine learning
Texts
Texts
Morteza Karimzadeh
Geographic Information Science & Technology Body of Knowledge   ·   01 Jan 2024   ·   doi:10.22224/gistbok/2024.1.8
spatial analysis GIS Natural Language Processing Geographic Information Retrieval machine learning

2023

Alternatives to Contour Visualizations for Power Systems Data
Alternatives to Contour Visualizations for Power Systems Data
Isaiah Lyons-Galante, Morteza Karimzadeh, Samantha Molnar, Graham Johnson, Kenny Gruchalla
2023 Workshop on Energy Data Visualization (EnergyVis)   ·   22 Oct 2023   ·   doi:10.1109/energyvis60781.2023.00009
Preprint
Repo
visualization electrical grid renewable energy
Enhancing sea ice segmentation in Sentinel-1 images with atrous convolutions
Enhancing sea ice segmentation in Sentinel-1 images with atrous convolutions
Rafael Pires de Lima, Behzad Vahedi, Nick Hughes, Andrew P. Barrett, Walter Meier, Morteza Karimzadeh
International Journal of Remote Sensing   ·   02 Sep 2023   ·   doi:10.1080/01431161.2023.2248560
Preprint
Repo
sea ice cryosphere remote sensing machine learning
Characterizing Spatial Accessibility of COVID-19 Testing and Vaccination Sites using Dasymetric Mapping and GIS
Characterizing Spatial Accessibility of COVID-19 Testing and Vaccination Sites using Dasymetric Mapping and GIS
Morteza Karimzadeh, Braden Hance, Alex Posen, Rita Sherwood, Tiger Su
Advances in Cartography and GIScience of the ICA   ·   07 Aug 2023   ·   doi:10.5194/ica-adv-4-12-2023
spatial analysis covid-19 public health epidemiology
Increasing the Spatial Coverage of Atmospheric Aerosol Depth Measurements using Random Forest and Mean Filters
Increasing the Spatial Coverage of Atmospheric Aerosol Depth Measurements using Random Forest and Mean Filters
Zhongying Wang, Rafael Pires de Lima, James L. Crooks, Elizabeth Anne Regan, Morteza Karimzadeh
IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium   ·   16 Jul 2023   ·   doi:10.1109/igarss52108.2023.10282685
Preprint
sea ice cryosphere remote sensing machine learning
Deep Learning on SAR Imagery: Transfer Learning Versus Randomly Initialized Weights
Deep Learning on SAR Imagery: Transfer Learning Versus Randomly Initialized Weights
Morteza Karimzadeh, Rafael Pires de Lima
IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium   ·   16 Jul 2023   ·   doi:10.1109/igarss52108.2023.10281892
Preprint
Repo
sea ice cryosphere remote sensing machine learning
Comparison of Cross-Entropy, Dice, and Focal Loss for Sea Ice Type Segmentation
Comparison of Cross-Entropy, Dice, and Focal Loss for Sea Ice Type Segmentation
Rafael Pires de Lima, Behzad Vahedi, Morteza Karimzadeh
IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium   ·   16 Jul 2023   ·   doi:10.1109/igarss52108.2023.10282060
Preprint
Repo
sea ice cryosphere remote sensing machine learning
Hang-Time HAR: A Benchmark Dataset for Basketball Activity Recognition Using Wrist-Worn Inertial Sensors
Hang-Time HAR: A Benchmark Dataset for Basketball Activity Recognition Using Wrist-Worn Inertial Sensors
Alexander Hoelzemann, Julia Lee Romero, Marius Bock, Kristof Van Laerhoven, Qin Lv
Sensors   ·   25 Jun 2023   ·   doi:10.3390/s23135879
public health human behavior wearable devices
Forecasting COVID-19 and Other Infectious Diseases for Proactive Policy: Artificial Intelligence Can Help
Forecasting COVID-19 and Other Infectious Diseases for Proactive Policy: Artificial Intelligence Can Help
Morteza Karimzadeh, Thoai Ngo, Benjamin Lucas, Hamidreza Zoraghein
Journal of Urban Health   ·   23 Jan 2023   ·   doi:10.1007/s11524-022-00714-7
PubMed Access
covid-19 public health epidemiology spatiotemporal machine learning
Model Ensemble With Dropout for Uncertainty Estimation in Sea Ice Segmentation Using Sentinel-1 SAR
Model Ensemble With Dropout for Uncertainty Estimation in Sea Ice Segmentation Using Sentinel-1 SAR
Rafael Pires de Lima, Morteza Karimzadeh
IEEE Transactions on Geoscience and Remote Sensing   ·   01 Jan 2023   ·   doi:10.1109/TGRS.2023.3331276
Preprint
Repo
sea ice cryosphere uncertainty remote sensing machine learning

2022

Global Impact of COVID-19 Pandemic on Physical Activity Habits of Competitive Runners: An Analysis of Wearable Device Data
Global Impact of COVID-19 Pandemic on Physical Activity Habits of Competitive Runners: An Analysis of Wearable Device Data
Julia Lee Romero, Qin Lv
International Journal of Environmental Research and Public Health   ·   10 Oct 2022   ·   doi:10.3390/ijerph191912933
covid-19 public health wearable devices
The United States COVID-19 Forecast Hub dataset
The United States COVID-19 Forecast Hub dataset
Estee Y. Cramer, Yuxin Huang, Yijin Wang, Evan L. Ray, Matthew Cornell, ..., Jo W. Walker, Rachel B. Slayton, Michael A. Johansson, Matthew Biggerstaff, Nicholas G. Reich
Scientific Data   ·   01 Aug 2022   ·   doi:10.1038/s41597-022-01517-w
Website
Repo
spatiotemporal machine learning covid-19 public health epidemiology
Big Data Community Algorithms: Deep Learning for Mapping
Big Data Community Algorithms: Deep Learning for Mapping
Morteza Karimzadeh
Zenodo   ·   01 Mar 2022   ·   doi:10.5281/ZENODO.6320982
remote sensing machine learning sea ice cryosphere synthetic aperture radar
A spatiotemporal machine learning approach to forecasting COVID-19 incidence at the county level in the USA
A spatiotemporal machine learning approach to forecasting COVID-19 incidence at the county level in the USA
Benjamin Lucas, Behzad Vahedi, Morteza Karimzadeh
International Journal of Data Science and Analytics   ·   15 Jan 2022   ·   doi:10.1007/s41060-021-00295-9
PubMed Access
Repo
spatiotemporal machine learning covid-19 public health epidemiology

2021

Spatiotemporal prediction of COVID-19 cases using inter- and intra-county proxies of human interactions
Spatiotemporal prediction of COVID-19 cases using inter- and intra-county proxies of human interactions
Behzad Vahedi, Morteza Karimzadeh, Hamidreza Zoraghein
Nature Communications   ·   08 Nov 2021   ·   doi:10.1038/s41467-021-26742-6
Repo
spatiotemporal machine learning covid-19 epidemiology public health
Sea ice type classification in the Chukchi sea using deep learning
Sea ice type classification in the Chukchi sea using deep learning
Behzad Vahedi, Morteza Karimzadeh, Siri Jodha Khalsa, Walt Meier, Andrew Barret, Benjamin Lucas, Farnoush Banaei-Kashani
figshare   ·   01 Jan 2021   ·   doi:10.6084/M9.FIGSHARE.14772891.V1
remote sensing machine learning sea ice cryosphere
Classifying Narcotrafficking Spatial Event Documents using Transformers
Classifying Narcotrafficking Spatial Event Documents using Transformers
Morteza Karimzadeh, Huilin Han, Beth Tellman, Erik Nielsen
Spatial Data Science Symposium 2021 (online)   ·   01 Jan 2021   ·   doi:10.25436/E2B88Q
Repo
text natural language processing Geographic Information Retrieval machine learning

2020

STULL: Unbiased Online Sampling for Visual Exploration of Large Spatiotemporal Data
STULL: Unbiased Online Sampling for Visual Exploration of Large Spatiotemporal Data
Guizhen Wang, Jingjing Guo, Mingjie Tang, Jose Florencio de Queiroz Neto, Calvin Yau, Anas Daghistani, Morteza Karimzadeh, Walid G. Aref, David S. Ebert
2020 IEEE Conference on Visual Analytics Science and Technology (VAST)   ·   01 Oct 2020   ·   doi:10.1109/vast50239.2020.00012
Route Packing: Geospatially-Accurate Visualization of Route Networks
Route Packing: Geospatially-Accurate Visualization of Route Networks
Jieqiong Zhao, Morteza Karimzadeh, Hanye Xu, Abish Malik, Shehzad Afzal, Guizhen Wang, Niklas Elmqvist, David Ebert
Proceedings of the Annual Hawaii International Conference on System Sciences   ·   01 Jan 2020   ·   doi:10.24251/hicss.2020.168
Human-guided visual analytics for big data.
Human-guided visual analytics for big data.
Morteza Karimzadeh, Jieqiong Zhao, Guizhen Wang, Luke S. Snyder, David S. Ebert
Big data in psychological research.   ·   01 Jan 2020   ·   doi:10.1037/0000193-008
Full-Text on ResearchGate
visual analytics visualization
VASSL: A Visual Analytics Toolkit for Social Spambot Labeling
VASSL: A Visual Analytics Toolkit for Social Spambot Labeling
Mosab Khayat, Morteza Karimzadeh, Jieqiong Zhao, David S. Ebert
IEEE Transactions on Visualization and Computer Graphics   ·   01 Jan 2020   ·   doi:10.1109/tvcg.2019.2934266

2019

City-level Geolocation of Tweets for Real-time Visual Analytics
City-level Geolocation of Tweets for Real-time Visual Analytics
Luke S. Snyder, Morteza Karimzadeh, Ray Chen, David S. Ebert
Proceedings of the 3rd ACM SIGSPATIAL International Workshop on AI for Geographic Knowledge Discovery   ·   05 Nov 2019   ·   doi:10.1145/3356471.3365243
Situational Awareness Enhanced through Social Media Analytics: A Survey of First Responders
Situational Awareness Enhanced through Social Media Analytics: A Survey of First Responders
Luke S. Snyder, Morteza Karimzadeh, Christina Stober, David S. Ebert
2019 IEEE International Symposium on Technologies for Homeland Security (HST)   ·   01 Nov 2019   ·   doi:10.1109/hst47167.2019.9033003
FeatureExplorer: Interactive Feature Selection and Exploration of Regression Models for Hyperspectral Images
FeatureExplorer: Interactive Feature Selection and Exploration of Regression Models for Hyperspectral Images
Jieqiong Zhao, Morteza Karimzadeh, Ali Masjedi, Taojun Wang, Xiwen Zhang, Melba M. Crawford, David S. Ebert
2019 IEEE Visualization Conference (VIS)   ·   01 Oct 2019   ·   doi:10.1109/visual.2019.8933619
Social Media for Sensing: Do Tweets Represent Events at Geo-Tagged Locations?
Social Media for Sensing: Do Tweets Represent Events at Geo-Tagged Locations?
Morteza Karimzadeh
Abstracts of the ICA   ·   15 Jul 2019   ·   doi:10.5194/ica-abs-1-160-2019
Bridging the Data Analysis Communication Gap Utilizing a Three‐Component Summarized Line Graph
Bridging the Data Analysis Communication Gap Utilizing a Three‐Component Summarized Line Graph
C. Yau, M. Karimzadeh, C. Surakitbanharn, N. Elmqvist, D. S. Ebert
Computer Graphics Forum   ·   01 Jun 2019   ·   doi:10.1111/cgf.13696
GeoAnnotator: A Collaborative Semi-Automatic Platform for Constructing Geo-Annotated Text Corpora
GeoAnnotator: A Collaborative Semi-Automatic Platform for Constructing Geo-Annotated Text Corpora
Morteza Karimzadeh, Alan M. MacEachren
ISPRS International Journal of Geo-Information   ·   27 Mar 2019   ·   doi:10.3390/ijgi8040161
GeoTxt: A scalable geoparsing system for unstructured text geolocation
GeoTxt: A scalable geoparsing system for unstructured text geolocation
Morteza Karimzadeh, Scott Pezanowski, Alan M. MacEachren, Jan O. Wallgrün
Transactions in GIS   ·   16 Jan 2019   ·   doi:10.1111/tgis.12510
The Validity, Generalizability and Feasibility of Summative Evaluation Methods in Visual Analytics
The Validity, Generalizability and Feasibility of Summative Evaluation Methods in Visual Analytics
Mosab Khayat, Morteza Karimzadeh, David S. Ebert, Arif Ghafoor
IEEE Transactions on Visualization and Computer Graphics   ·   01 Jan 2019   ·   doi:10.1109/tvcg.2019.2934264
MetricsVis: A Visual Analytics System for Evaluating Employee Performance in Public Safety Agencies
MetricsVis: A Visual Analytics System for Evaluating Employee Performance in Public Safety Agencies
Jieqiong Zhao, Morteza Karimzadeh, Luke S. Snyder, Chittayong Surakitbanharn, Zhenyu Cheryl Qian, David S. Ebert
IEEE Transactions on Visualization and Computer Graphics   ·   01 Jan 2019   ·   doi:10.1109/tvcg.2019.2934603
Interactive Learning for Identifying Relevant Tweets to Support Real-time Situational Awareness
Interactive Learning for Identifying Relevant Tweets to Support Real-time Situational Awareness
Luke S. Snyder, Yi-Shan Lin, Morteza Karimzadeh, Dan Goldwasser, David S. Ebert
IEEE Transactions on Visualization and Computer Graphics   ·   01 Jan 2019   ·   doi:10.1109/tvcg.2019.2934614

2017

GeoCorpora: building a corpus to test and train microblog geoparsers
GeoCorpora: building a corpus to test and train microblog geoparsers
Jan Oliver Wallgrün, Morteza Karimzadeh, Alan M. MacEachren, Scott Pezanowski
International Journal of Geographical Information Science   ·   11 Sep 2017   ·   doi:10.1080/13658816.2017.1368523

2016

Performance evaluation measures for toponym resolution
Performance evaluation measures for toponym resolution
Morteza Karimzadeh
Proceedings of the 10th Workshop on Geographic Information Retrieval   ·   31 Oct 2016   ·   doi:10.1145/3003464.3003472

2015

Towards contextualized models of spatial relations
Towards contextualized models of spatial relations
Jan Oliver Wallgrün, Alexander Klippel, Morteza Karimzadeh
Proceedings of the 9th Workshop on Geographic Information Retrieval   ·   26 Nov 2015   ·   doi:10.1145/2837689.2837692

2014

Construction and first analysis of a corpus for the evaluation and training of microblog/twitter geoparsers
Construction and first analysis of a corpus for the evaluation and training of microblog/twitter geoparsers
Jan Oliver Wallgrün, Frank Hardisty, Alan M. MacEachren, Morteza Karimzadeh, Yiting Ju, Scott Pezanowski
Proceedings of the 8th Workshop on Geographic Information Retrieval   ·   04 Nov 2014   ·   doi:10.1145/2675354.2675701

2013

GeoTxt
GeoTxt
Morteza Karimzadeh, Wenyi Huang, Siddhartha Banerjee, Jan Oliver Wallgrün, Frank Hardisty, Scott Pezanowski, Prasenjit Mitra, Alan M. MacEachren
Proceedings of the 7th Workshop on Geographic Information Retrieval   ·   05 Nov 2013   ·   doi:10.1145/2533888.2533942