arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1804.04087cs.CLcs.LG
收藏

Natural Language Statistical Features of LSTM-generated Texts

University of Modena and Reggio Emilia(摩德纳和雷焦艾米利亚大学);University of Manchester(曼彻斯特大学);University of Bologna(博洛尼亚大学);University of Milano Bicocca(米兰比可卡大学)

Marco Lippi, Marcelo A Montemurro, Mirko Degli Esposti, Giampaolo Cristadoro

英文摘要:

Long Short-Term Memory (LSTM) networks have recently shown remarkable performance in several tasks dealing with natural language generation, such as image captioning or poetry composition. Yet, only few works have analyzed text generated by LSTMs in order to quantitatively evaluate to which extent such artificial texts resemble those generated by humans. We compared the statistical structure of LSTM-generated language to that of written natural language, and to those produced by Markov models of various orders. In particular, we characterized the statistical structure of language by assessing word-frequency statistics, long-range correlations, and entropy measures. Our main finding is that while both LSTM and Markov-generated texts can exhibit features similar to real ones in their word-frequency statistics and entropy measures, LSTM-texts are shown to reproduce long-range correlations at scales comparable to those found in natural language. Moreover, for LSTM networks a temperature-like parameter controlling the generation process shows an optimal value---for which the produced texts are closest to real language---consistent across all the different statistical features investigated.

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。

↑