Exploiting Heterogeneous Graph Neural Networks with Latent Worker/Task Correlation Information for Label Aggregation in Crowdsourcing

• URL: http://arxiv.org/abs/2010.13080v2
• Date: Thu, 13 May 2021 15:45:26 GMT
• Title: Exploiting Heterogeneous Graph Neural Networks with Latent Worker/Task Correlation Information for Label Aggregation in Crowdsourcing
• Authors: Hanlu Wu, Tengfei Ma, Lingfei Wu, Shouling Ji
• Abstract summary: Crowdsourcing has attracted much attention for its convenience to collect labels from non-expert workers instead of experts. We propose a novel framework based on graph neural networks for aggregating crowd labels.
• Score: 72.34616482076572
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Crowdsourcing has attracted much attention for its convenience to collect labels from non-expert workers instead of experts. However, due to the high level of noise from the non-experts, an aggregation model that learns the true label by incorporating the source credibility is required. In this paper, we propose a novel framework based on graph neural networks for aggregating crowd labels. We construct a heterogeneous graph between workers and tasks and derive a new graph neural network to learn the representations of nodes and the true labels. Besides, we exploit the unknown latent interaction between the same type of nodes (workers or tasks) by adding a homogeneous attention layer in the graph neural networks. Experimental results on 13 real-world datasets show superior performance over state-of-the-art models.

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