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Learning to Rank Question-Answer Pairs using Hierarchical Recurrent Encoder with Latent Topic Clustering

10 Oct 2017NAACL 2018 6arXiv:1710.03430archive 2025-07-28

Seunghyun Yoon, Joongbo Shin, Kyomin Jung

In this paper, we propose a novel end-to-end neural architecture for ranking candidate answers, that adapts a hierarchical recurrent neural network and a latent topic clustering module. With our proposed model, a text is encoded to a vector representation from an word-level to a chunk-level to effectively capture the entire meaning. In particular, by adapting the hierarchical structure, our model shows very small performance degradations in longer text comprehension while other state-of-the-art recurrent neural network models suffer from it. Additionally, the latent topic clustering module extracts semantic information from target samples. This clustering module is useful for any text related tasks by allowing each data sample to find its nearest topic cluster, thus helping the neural network model analyze the entire data. We evaluate our models on the Ubuntu Dialogue Corpus and consumer electronic domain question answering dataset, which is related to Samsung products. The proposed model shows state-of-the-art results for ranking question-answer pairs.

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david-yoon/QA_HRDE_LTC mentioned in papertfMIT report

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Tasks

Answer SelectionClusteringLearning-To-RankQuestion Answering

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Answer Selection Ubuntu Dialogue (v1, Ranking) HRDE-LTC 1 in 10 R@1 0.684 #1 of 1 Archive leaderboard report
Answer Selection Ubuntu Dialogue (v1, Ranking) HRDE-LTC 1 in 10 R@2 0.822 #1 of 1 Archive leaderboard report
Answer Selection Ubuntu Dialogue (v1, Ranking) HRDE-LTC 1 in 10 R@5 0.960 #1 of 1 Archive leaderboard report
Answer Selection Ubuntu Dialogue (v1, Ranking) HRDE-LTC 1 in 2 R@1 0.916 #1 of 1 Archive leaderboard report
Answer Selection Ubuntu Dialogue (v2, Ranking) HRDE-LTC 1 in 10 R@1 0.652 #2 of 2 Archive leaderboard report
Answer Selection Ubuntu Dialogue (v2, Ranking) HRDE-LTC 1 in 10 R@2 0.815 #2 of 2 Archive leaderboard report
Answer Selection Ubuntu Dialogue (v2, Ranking) HRDE-LTC 1 in 10 R@5 0.966 #2 of 2 Archive leaderboard report
Answer Selection Ubuntu Dialogue (v2, Ranking) HRDE-LTC 1 in 2 R@1 0.915 #2 of 2 Archive leaderboard report

Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.

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