Closes #59 - Add CEI dataset

bigbio/hub/hub_repos/cei/README.md

@@ -0,0 +1,44 @@
+---
+language:
+  - en
+bigbio_language:
+  - English
+multilinguality: monolingual
+pretty_name: CEI
+homepage: https://github.com/sb895/chemical-exposure-information-corpus
+bigbio_pubmed: true
+bigbio_public: true
+bigbio_tasks:
+  - TXTCLASS
+---
+
+
+# Dataset Card for Chemical Exposure Information (CEI) Corpus
+
+## Dataset Description
+
+- **Homepage:** https://github.com/sb895/chemical-exposure-information-corpus
+- **Pubmed:** True
+- **Public:** True
+- **Tasks:** TXTCLASS
+
+The Chemical Exposure Information (CEI) Corpus consists of 3661 PubMed publication abstracts manually annotated by 
+experts according to a taxonomy. The taxonomy consists of 32 classes in a hierarchy. Zero or more class labels are 
+assigned to each sentence in the corpus.
+
+## Citation Information
+
+```
+@article{,
+  author    = {Larsson, Kristin and Baker, Simon and Silins, Ilona and Guo, Yufan and Stenius, Ulla and Korhonen, \
+    Anna and Berglund, Marika},
+  title     = {Text mining for improved exposure assessment},
+  journal   = {PloS one},
+  volume    = {12},
+  year      = {2017},
+  url       = {https://doi.org/10.1371/journal.pone.0173132},
+  doi       = {10.1371/journal.pone.0173132},
+  biburl    = {https://journals.plos.org/plosone/article/citation/bibtex?id=10.1371/journal.pone.0173132},
+  bibsource = {PloS one}
+}
+```