1. Akbik, A., Blythe, D., Vollgraf, R.: Contextual string embeddings for sequence labeling. In: 27th International Conference on Computational Linguistics, COLING 2018, pp. 1638–1649 (2018)
2. Bojanowski, P., Grave, E., Joulin, A., Mikolov, T.: Enriching word vectors with subword information. Trans. Assoc. Comput. Linguist. 5, 135–146 (2017)
3. Borchmann, Ł., Gretkowski, A., Graliński, F.: Approaching nested named entity recognition with parallel LSTM-CRFs. In: Proceedings of AI and NLP Workshop Day 2018 (2018)
4. Chiu, J.P., Nichols, E.: Named entity recognition with bidirectional LSTM-CNNs. Trans. Assoc. Comput. Linguist. 4, 357–370 (2016)
5. Cilibrasi, R.L., Vitanyi, P.M.: The Google similarity distance. IEEE Trans. Knowl. Data Eng. 19(3), 370–383 (2007)