arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1808.08409cs.CL
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通过调整字符串内核以适应您的测试集,改进情感分析和阿拉伯语方言识别中的字符串内核结果

Improving the results of string kernels in sentiment analysis and Arabic dialect identification by adapting them to your test set

University of Bucharest(布加勒斯特大学)

Radu Tudor Ionescu, Andrei M. Butnaru

摘要:

最近,字符串内核已经在各种文本分类任务中获得了最先进的结果,例如阿拉伯语方言识别或母语识别。在本文中,我们采用两种简单而有效的转导学习方法,以进一步改善字符串内核的结果。第一种方法基于将训练集中的样本和测试集中的样本之间的成对字符串内核相似性解释为特征。我们的第二种方法是基于两次学习迭代的简单自训练方法。在第一次迭代中,像往常一样,在训练集上训练分类器并在测试集上测试。在第二次迭代中,将多个测试样本(分类器与其相关联的置信度分数较高)添加到训练集中以进行另一轮训练。然而,添加的测试样本的地面实况标签是不必要的。相反,我们使用分类器在第一次训练迭代中预测的标签。通过调整字符串内核的测试集,我们报告显着更好的准确率在英语极性分类和阿拉伯语方言识别。

英文摘要:

Recently, string kernels have obtained state-of-the-art results in various text classification tasks such as Arabic dialect identification or native language identification. In this paper, we apply two simple yet effective transductive learning approaches to further improve the results of string kernels. The first approach is based on interpreting the pairwise string kernel similarities between samples in the training set and samples in the test set as features. Our second approach is a simple self-training method based on two learning iterations. In the first iteration, a classifier is trained on the training set and tested on the test set, as usual. In the second iteration, a number of test samples (to which the classifier associated higher confidence scores) are added to the training set for another round of training. However, the ground-truth labels of the added test samples are not necessary. Instead, we use the labels predicted by the classifier in the first training iteration. By adapting string kernels to the test set, we report significantly better accuracy rates in English polarity classification and Arabic dialect identification.

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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