arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2107.07682cs.CLcs.LGmath.STstat.TH
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主动查询K-Means在文本分类中的应用

The Application of Active Query K-Means in Text Classification

New York University(纽约大学)

Yukun Jiang

摘要:

主动学习是一种处理大量未标记数据的最先进的机器学习方法。在自然语言处理领域,通常对所有数据进行注释是昂贵且耗时的。这种低效率启发了我们将主动学习应用于文本分类。本研究首先将传统的无监督k-means聚类方法改进为半监督k-means聚类。然后,一个新的尝试,进一步扩展该算法到主动学习的场景与惩罚最小最大选择,使有限的查询,产生更稳定的初始质心。该方法利用了用户的交互式查询结果和底层的距离表示。在中文新闻数据集上进行测试后,它显示出准确率的一致提高,同时降低了训练成本。

英文摘要:

Active learning is a state-of-art machine learning approach to deal with an abundance of unlabeled data. In the field of Natural Language Processing, typically it is costly and time-consuming to have all the data annotated. This inefficiency inspires out our application of active learning in text classification. Traditional unsupervised k-means clustering is first modified into a semi-supervised version in this research. Then, a novel attempt is applied to further extend the algorithm into active learning scenario with Penalized Min-Max-selection, so as to make limited queries that yield more stable initial centroids. This method utilizes both the interactive query results from users and the underlying distance representation. After tested on a Chinese news dataset, it shows a consistent increase in accuracy while lowering the cost in training.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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