Added new result for NER (sebastianruder#487)

* Added new result for NER

* Update named_entity_recognition.md

english/named_entity_recognition.md

@@ -19,6 +19,7 @@ corpus tagged with four different entity types (PER, LOC, ORG, MISC). Models are
 | ------------- | :-----:| --- | --- |
 | CNN Large + fine-tune (Baevski et al., 2019) | 93.5 | [Cloze-driven Pretraining of Self-attention Networks](https://arxiv.org/pdf/1903.07785.pdf) | |
 | RNN-CRF+Flair | 93.47 | [Improved Differentiable Architecture Search for Language Modeling and Named Entity Recognition](https://www.aclweb.org/anthology/D19-1367/) | |
+| CrossWeigh + Flair (Wang et al., 2019)♦ | 93.43 | [CrossWeigh: Training Named Entity Tagger from Imperfect Annotations](https://www.aclweb.org/anthology/D19-1519/) | [Official](https://github.com/ZihanWangKi/CrossWeigh) |
 | LSTM-CRF+ELMo+BERT+Flair | 93.38 | [Neural Architectures for Nested NER through Linearization](https://www.aclweb.org/anthology/P19-1527/) | [Official](https://github.com/ufal/acl2019_nested_ner) |
 | Flair embeddings (Akbik et al., 2018)♦ | 93.09 | [Contextual String Embeddings for Sequence Labeling](https://drive.google.com/file/d/17yVpFA7MmXaQFTe-HDpZuqw9fJlmzg56/view) | [Flair framework](https://github.com/zalandoresearch/flair)
 | BERT Large (Devlin et al., 2018) | 92.8 | [BERT: Pre-training of Deep Bidirectional Transformers for Language Understanding](https://arxiv.org/abs/1810.04805) | |
@@ -71,6 +72,7 @@ Links: [WNUT 2017 Emerging Entity task page](https://noisy-text.github.io/2017/e
 
 | Model         | F1  | F1 (surface form) |  Paper / Source |
 | ---           | --- | ---               | --- |
+| CrossWeigh + Flair (Wang et al., 2019) | 50.03 | [CrossWeigh: Training Named Entity Tagger from Imperfect Annotations](https://www.aclweb.org/anthology/D19-1519/) | [Official](https://github.com/ZihanWangKi/CrossWeigh) |
 | Flair embeddings (Akbik et al., 2018) | 49.59 | | [Pooled Contextualized Embeddings for Named Entity Recognition](http://alanakbik.github.io/papers/naacl2019_embeddings.pdf) / [Flair framework](https://github.com/zalandoresearch/flair) |
 | Aguilar et al. (2018) | 45.55 | | [Modeling Noisiness to Recognize Named Entities using Multitask Neural Networks on Social Media](http://aclweb.org/anthology/N18-1127.pdf) |
 | SpinningBytes | 40.78 | 39.33 | [Transfer Learning and Sentence Level Features for Named Entity Recognition on Tweets](http://aclweb.org/anthology/W17-4422.pdf) |