Your Cursor Reveals: On Analyzing Workers’ Browsing Behavior and Annotation Quality In Crowdsourcing Tasks

In this work, we investigate the connection between browsing behavior and task quality of crowdsourcing workers performing annotation tasks that require information judgements. Such information judgements are often required to derive ground truth answers to information retrieval queries. We explore the use of workers’ browsing behavior to directly determine their annotation result quality. We hypothesize
user attention
to be the main factor contributing to a worker’s annotation quality. To predict annotation quality at the task level, we model two aspects of task-specific user attention, also known as
general
and
semantic user attentions
. Both aspects of user attention can be modeled using different types of browsing behavior features but most previous research mostly focuses on the former. This work therefore proposes to model semantic user attention by capturing the worker’s understanding of task content using task-semantics specific behavior features. We develop a web-based annotation interface for gathering user behavior data when workers perform a knowledge path retrieval task. With the collected data, we train several prediction models using behavior features corresponding to different aspects of user attention and conduct experiments on a set of annotation tasks performed by 51 Amazon Mechanical Turk workers. We show that the prediction model using both general and semantic user attention features can achieve the best performance of nearly 75% accuracy.