Journal ArticleDOI
An uncertainty-aware framework for reliable disaster damage assessment via crowdsourcing
TLDR
This research improves the effectiveness of crowdsourcing in post-disaster damage assessment by enhancing the content and reliability of information gathered through public participation by presenting a novel framework for quantification and reduction of uncertainty in the outcome of participatory damage assessment.Abstract:
Accurate and timely estimation of incurred damages is a critical component of effective disaster management, usually performed by trained inspectors and experts. The limitations in resources and workforce can hinder the timely acquisition of critical information and make the process costly. Crowdsourcing and participatory disaster damage assessment have emerged as a possible solution to address this challenge. However, such approaches generally suffer from a lack of reliability. This research improves the effectiveness of crowdsourcing in post-disaster damage assessment by enhancing the content and reliability of information gathered through public participation. The paper presents a novel framework for quantification and reduction of uncertainty in the outcome of participatory damage assessment. First, to reduce the complexity and subjectivity, the classification of overall damage state is decomposed into more straightforward microtasks in the form of a questionnaire survey. A decision rule is implemented to infer the damage state of buildings from the participant responses. Second, an information-theoretic model based on a maximum a posteriori probability estimation is presented for obtaining an accurate probabilistic description of the inferred damage states while quantifying and accounting for the reliability of the citizen participants as well as the relative ambiguity of images. A pilot study is presented by involving 70 non-expert citizen participants to assess the post-disaster imagery of 60 buildings collected following Hurricane Harvey. A comparison of the outcome with the available expert labels shows relatively high accuracy. The proposed model also outperforms the common majority-vote approach, especially as the number of unreliable participants increases.read more
Citations
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Journal ArticleDOI
Integrated community-based approaches to urban pluvial flooding research, trends and future directions: A review
TL;DR: A review of current integrated community-based approaches to urban pluvial flooding can be found in this article , where the limitations of these approaches to fully capture the multi-dimensional nature of UPF are explored in detail and research gaps are identified.
Journal ArticleDOI
Post‐disaster damage classification based on deep multi‐view image fusion
TL;DR: In this article , a multi-view convolutional neural network (MV-CNN) architecture is proposed, which combines the information from different views of a damaged building, resulting in 3D aggregation of the 2D damage features from each view.
Journal ArticleDOI
A Fine-Grain Batching-Based Task Allocation Algorithm for Spatial Crowdsourcing
Yuxin Jiao,Zhikun Lin,Xiaozhu Wu +2 more
TL;DR: This paper proposes a fine-grained, batching-based task allocation algorithm (FGBTA), considering non-stationary setting, and uses the sliding window (SW) method to retain the latest batch utility and discard the historical information that is too far away to achieve refined batching and adapt to temporal changes.
Journal ArticleDOI
Uncertainty‐aware convolutional neural network for explainable artificial intelligence‐assisted disaster damage assessment
TL;DR: This study develops uncertainty‐aware deep learning models for the assessment of post‐disaster damage using aerial imaging within the framework of variational Bayesian inference, Monte Carlo dropout sampling technique is used to propagate epistemic uncertainty in model predictions.
References
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Vikas C. Raykar,Shipeng Yu,Linda Zhao,Gerardo Hermosillo Valadez,Charles Florin,Luca Bogoni,Linda Moy +6 more
TL;DR: A probabilistic approach for supervised learning when the authors have multiple annotators providing (possibly noisy) labels but no absolute gold standard, and experimental results indicate that the proposed method is superior to the commonly used majority voting baseline.
Proceedings Article
Whose Vote Should Count More: Optimal Integration of Labels from Labelers of Unknown Expertise
TL;DR: A probabilistic model is presented and it is demonstrated that the model outperforms the commonly used "Majority Vote" heuristic for inferring image labels, and is robust to both noisy and adversarial labelers.