Papers › Ego Group Partition: A Novel Framework for Improving Ego Experiments in Social Networks
Ego Group Partition: A Novel Framework for Improving Ego Experiments in Social Networks
Lu Deng, JingJing Zhang, Yong Wang, Chuan Chen
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Estimating the average treatment effect in social networks is challenging due to individuals influencing each other. One approach to address interference is ego cluster experiments, where each cluster consists of a central individual (ego) and its peers (alters). Clusters are randomized, and only the effects on egos are measured. In this work, we propose an improved framework for ego cluster experiments called ego group partition (EGP), which directly generates two groups and an ego sub-population instead of ego clusters. Under specific model assumptions, we propose two ego group partition algorithms. Compared to the original ego clustering algorithm, our algorithms produce more egos, yield smaller biases, and support parallel computation. The performance of our algorithms is validated through simulation and real-world case studies.
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