Hanan Samet
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View article: DistRAG: Towards Distance-Based Spatial Reasoning in LLMs
DistRAG: Towards Distance-Based Spatial Reasoning in LLMs Open
Many real world tasks where Large Language Models (LLMs) can be used require spatial reasoning, like Point of Interest (POI) recommendation and itinerary planning. However, on their own LLMs lack reliable spatial reasoning capabilities, es…
View article: Beyond the Commute: Unlocking the Potential of Electric Vehicles as Future Energy Storage Solutions (Vision Paper)
Beyond the Commute: Unlocking the Potential of Electric Vehicles as Future Energy Storage Solutions (Vision Paper) Open
Electric vehicles (EVs) have the potential to serve as energy storage solutions through bidirectional charging technology, which allows them to both draw power from and feed power back into the grid, homes, or other vehicles. This capabili…
View article: Visualizing multilayer spatiotemporal epidemiological data with animated geocircles
Visualizing multilayer spatiotemporal epidemiological data with animated geocircles Open
Objective The COVID-19 pandemic emphasized the value of geospatial visual analytics for both epidemiologists and the general public. However, systems struggled to encode temporal and geospatial trends of multiple, potentially interacting v…
View article: Cross-lingual Text Clustering in a Large System
Cross-lingual Text Clustering in a Large System Open
The multilingual world needs systems that can cluster text written in multiple languages into the same thread or topic. Clustering multilingual text can be accomplished by translating and then clustering text in a canonical language, using…
View article: GESTALT: Geospatially Enhanced Search with Terrain Augmented Location Targeting
GESTALT: Geospatially Enhanced Search with Terrain Augmented Location Targeting Open
Geographic information systems (GIS) provide users with a means to efficiently search over spatial data given certain key pieces of information, like the coordinates or exact name of a location of interest. Current GIS capabilities do not …
View article: BroadcastSTAND: Clustering Multimedia Sources of News
BroadcastSTAND: Clustering Multimedia Sources of News Open
News reaches a variety of audiences through any number of mediums, from traditional newspaper publications to social media posts to radio and TV broadcasts. These varied mediums present valuable research opportunities to gain insights into…
View article: Metric Indexing for the Earth Mover's Distance
Metric Indexing for the Earth Mover's Distance Open
The Earth Mover's Distance (EMD) has become a popular choice for applications in similarity search, particularly in applications such as few-shot image classification where it is observed to match human perceptions of image differences bet…
View article: COMPASS: Cardinal Orientation Manipulation and Pattern-Aware Spatial Search
COMPASS: Cardinal Orientation Manipulation and Pattern-Aware Spatial Search Open
The Spatial Pattern Matching paradigm offers a promising direction for searching with incomplete or imperfect information, but it is badly constrained by dependence on graph-based representations and computationally intensive search algori…
View article: In-Path Oracles for Road Networks
In-Path Oracles for Road Networks Open
Many spatial applications benefit from the fast answering to a seemingly simple spatial query: “Is a point of interest (POI) ‘in-path’ to the shortest path between a source and a destination?” In this context, an in-path POI is one that is…
View article: Using dynamic circles and squares to visualize spatio-temporal variation
Using dynamic circles and squares to visualize spatio-temporal variation Open
Visualizations such as bar charts, scatter plots, and objects on geographical maps often convey critical information, including exact and relative numeric values, using shapes. The choice of shape and method of encoding information is ofte…
View article: CoronaViz: Visualizing Multilayer Spatiotemporal COVID-19 Data with Animated Geocircles
CoronaViz: Visualizing Multilayer Spatiotemporal COVID-19 Data with Animated Geocircles Open
While many dashboards for visualizing COVID-19 data exist, most separate geospatial and temporal data into discrete visualizations or tables. Further, the common use of choropleth maps or space-filling map overlays supports only a single g…
View article: MusicStand
MusicStand Open
Music is present in numerous forms in our daily lives and is deemed essential to it. Multiple applications have been proposed to let users check into a location and tag that check-in with the song to which they are listening. This is time-…
View article: LiMITS: An Effective Approach for Trajectory Simplification
LiMITS: An Effective Approach for Trajectory Simplification Open
Trajectories represent the mobility of moving objects and thus is of great value in data mining applications. However, trajectory data is enormous in volume, so it is expensive to store and process the raw data directly. Trajectories are a…
View article: Equal Area Breaks: A Classification Scheme for Data to Obtain an\n Evenly-colored Choropleth Map
Equal Area Breaks: A Classification Scheme for Data to Obtain an\n Evenly-colored Choropleth Map Open
An efficient algorithm for computing the choropleth map classification scheme\nknown as equal area breaks or geographical quantiles is introduced. An equal\narea breaks classification aims to obtain a coloring for the map such that the\nar…
View article: Equal Area Breaks: A Classification Scheme for Data to Obtain an Evenly-colored Choropleth Map
Equal Area Breaks: A Classification Scheme for Data to Obtain an Evenly-colored Choropleth Map Open
An efficient algorithm for computing the choropleth map classification scheme known as equal area breaks or geographical quantiles is introduced. An equal area breaks classification aims to obtain a coloring for the map such that the area …
View article: NewsStand CoronaViz: A Map Query Interface for Spatio-Temporal and Spatio-Textual Monitoring of Disease Spread
NewsStand CoronaViz: A Map Query Interface for Spatio-Temporal and Spatio-Textual Monitoring of Disease Spread Open
With the rapid continuing spread of COVID-19, it is clearly important to be able to track the progress of the virus over time in order to be better prepared to anticipate its emergence and spread in new regions as well as declines in its p…
View article: Learning Embeddings of Spatial, Textual and Temporal Entities in Geotagged Tweets
Learning Embeddings of Spatial, Textual and Temporal Entities in Geotagged Tweets Open
With online social networks being extended to geographical space, location context plays a key role in many applications such as local event detection and location recommendation. Geotagged tweets in Twitter serve as an invaluable source t…
View article: DeLLe
DeLLe Open
Geotagged tweet streams contain invaluable information about the real-world local events like sports games, protests and traffic accidents. Timely detecting and extracting such events may have various applications but yet unsolved challeng…
View article: A Data-driven Framework for Long-Range Aircraft Conflict Detection and Resolution
A Data-driven Framework for Long-Range Aircraft Conflict Detection and Resolution Open
At the present time, there is no mechanism for Air Navigation Service Providers (ANSPs) to probe new flight plans filed by the Airlines Operation Centers (AOCs) against the existing approved flight plans to see if they are likely to cause …
View article: Understanding Metropolitan Crowd Mobility via Mobile Cellular Accessing Data
Understanding Metropolitan Crowd Mobility via Mobile Cellular Accessing Data Open
Understanding crowd mobility in a metropolitan area is extremely valuable for city planners and decision makers. However, crowd mobility is a relatively new area of research and has significant technical challenges: lack of large-scale fin…
View article: Intelligent systems for geosciences
Intelligent systems for geosciences Open
A research agenda for intelligent systems that will result in fundamental new capabilities for understanding the Earth system.
View article: DOS
DOS Open
Large analytic applications on road networks including simulations, logistics, location-based advertisement, and transportation planning require shortest distance/time methods that provide high throughput (i.e., distance/time computations …
View article: Enhancing Local Live Tweet Stream to Detect News
Enhancing Local Live Tweet Stream to Detect News Open
Twitter captures invaluable information about real-world news, spanning a wide scale from large national/international stories like a presidential election to small local stories such as a local farmers market. Detecting and extracting sma…