Integrity and Junkiness Failure Handling for Embedding-based Retrieval: A Case Study in Social Network Search

• URL: http://arxiv.org/abs/2304.09287v1
• Date: Tue, 18 Apr 2023 20:53:47 GMT
• Title: Integrity and Junkiness Failure Handling for Embedding-based Retrieval: A Case Study in Social Network Search
• Authors: Wenping Wang, Yunxi Guo, Chiyao Shen, Shuai Ding, Guangdeng Liao, Hao Fu, Pramodh Karanth Prabhakar
• Abstract summary: Embedding based retrieval has seen its usage in a variety of search applications like e-commerce, social networking search etc. In this paper, we conduct an analysis of embedding-based retrieval launched in early 2021 on our social network search engine. We define two main categories of failures introduced by it, integrity and junkiness.
• Score: 26.705196461992845
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Embedding based retrieval has seen its usage in a variety of search applications like e-commerce, social networking search etc. While the approach has demonstrated its efficacy in tasks like semantic matching and contextual search, it is plagued by the problem of uncontrollable relevance. In this paper, we conduct an analysis of embedding-based retrieval launched in early 2021 on our social network search engine, and define two main categories of failures introduced by it, integrity and junkiness. The former refers to issues such as hate speech and offensive content that can severely harm user experience, while the latter includes irrelevant results like fuzzy text matching or language mismatches. Efficient methods during model inference are further proposed to resolve the issue, including indexing treatments and targeted user cohort treatments, etc. Though being simple, we show the methods have good offline NDCG and online A/B tests metrics gain in practice. We analyze the reasons for the improvements, pointing out that our methods are only preliminary attempts to this important but challenging problem. We put forward potential future directions to explore.

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