text_plain_output_1.png image_output_1.png
import pandas as pd

meta = pd.read_csv('/kaggle/input/CORD-19-research-challenge/metadata.csv')

meta_dropped = meta.drop(['Microsoft Academic Paper ID', 'WHO #Covidence'], axis=1)

miss = meta['abstract'].isna().sum()

abstracts_papers = meta[meta['abstract'].notna()]
print('The total number of papers is {:0.0f}'.format(abstracts_papers.shape[0]))
missing_doi = abstracts_papers['doi'].isna().sum()
print('The number of papers without doi is {:0.0f}'.format(missing_doi))
missing_url = abstracts_papers['url'].isna().sum()
print('The number of papers without url is {:0.0f}'.format(missing_url))