Why This Matters

Emergency response systems critically depend on timely and accurate situational awareness from heterogeneous data sources including social media, but information extraction from tweets and posts introduces significant uncertainty about reliability and accuracy. This work is innovative because it explicitly models extraction uncertainties using probabilistic graph structures, enabling emergency managers to make better resource allocation decisions despite noisy and incomplete information.

What We Did

This paper develops a structured summarization framework for extracting critical information from social media streams during emergency events. The work introduces Uncertain Concept Graphs to model spatial-temporal relationships between information sources, resources, and incidents by capturing uncertainties in data extraction. The system uses Natural Language Processing to infer resource demands and optimize emergency service dispatch across affected regions.

Key Results

The framework successfully modeled disaster scenarios using Uncertain Concept Graphs that captured incident locations, resource requirements, and service availability with associated confidence scores. The system identified critical resource shortfalls and optimized dispatch decisions to minimize response time while accounting for travel uncertainties. Evaluation on hurricane disaster data showed the approach could infer regional resource needs and help coordinate emergency services more effectively.

Full Abstract

Cite This Paper

@inproceedings{Purohit2018,
  author = {Purohit}, H. and {Nannapaneni}, S. and Dubey, Abhishek and {Karuna}, P. and {Biswas}, G.},
  booktitle = {2018 IEEE International Science of Smart City Operations and Platforms Engineering in Partnership with Global City Teams Challenge (SCOPE-GCTC)},
  title = {Structured Summarization of Social Web for Smart Emergency Services by Uncertain Concept Graph},
  year = {2018},
  month = {apr},
  pages = {30-35},
  abstract = {The Web has empowered emergency services to enhance operations by collecting real-time information about incidents from diverse data sources such as social media. However, the high volume of unstructured data from the heterogeneous sources with varying degrees of veracity challenges the timely extraction and integration of relevant information to summarize the current situation. Existing work on event detection and summarization on social media relates to this challenge of timely extraction of information during an evolving event. However, it is limited in both integrating incomplete information from diverse sources and using the integrated information to dynamically infer knowledge representation of the situation that captures optimal actions (e.g., allocate available finite ambulances to incident regions). In this paper, we present a novel concept of an Uncertain Concept Graph (UCG) that is capable of representing dynamic knowledge of a disaster event from heterogeneous data sources, particularly for the regions of interest, and resources/services required. The information sources, incident regions, and resources (e.g., ambulances) are represented as nodes in UCG, while the edges represent the weighted relationships between these nodes. We then propose a solution for probabilistic edge inference between nodes in UCG. We model a novel optimization problem for the edge assignment between a service resource to a region node over time trajectory. The output of such structured summarization over time can be valuable for modeling event dynamics in the real world beyond emergency management, across different smart city operations such as transportation.},
  category = {workshop},
  contribution = {colab},
  doi = {10.1109/SCOPE-GCTC.2018.00012},
  file = {:Purohit2018-Structured_Summarization_of_Social_Web_for_Smart_Emergency_Services_by_Uncertain_Concept_Graph.pdf:PDF},
  issn = {null},
  keywords = {emergency response, social media analysis, situational awareness, resource allocation, information extraction},
  tag = {decentralization,incident},
  month_numeric = {4}
}
Quick Info
Year 2018
Keywords
emergency response social media analysis situational awareness resource allocation information extraction
Research Areas
emergency planning
Search Tags

Structured, Summarization, Social, Smart, Emergency, Services, Uncertain, Concept, Graph, emergency response, social media analysis, situational awareness, resource allocation, information extraction, emergency, planning, 2018, Purohit, Nannapaneni, Dubey, Karuna, Biswas