COVID-19 Data Tools

Tools for making COVID 19 data slightly easier for everyone! If you A) think something would be useful in your research or B) have some helpful code to contribute, make an issue or PR ASAP so we can get your code shared!

Installation

pip install cord-19-tools

BE SURE TO HAVE THE MOST RECENT VERSION! I will be constantly updating to make sure users are getting the right data! Semantic Scholar updates the dataset every friday, so on fridays and saturdays be sure to redownload data!

Demo

Demonstration Notebook on colab

Downloading the data

To download and extract the data, use the download function:

import cotools
from pprint import pprint

cotools.download()

For now this just downloads the data from the CORD-19 dataset, metadata is not included (will be by end of day), extracts all the tarfiles, and places them in a directory

The Paperset class

This is a class for lazily loading papers from the CORD-19 dataset.

# no `/` at the end please!
data = cotools.Paperset("data/comm_use_subset")

# indexes with ints
pprint(data[0])
# returns a dict

# and slices!
pprint(data[:2])
# returns a list of dicts


print(len(data))

# takes about 5gb in memory
alldata = data[:]

Lets talk for a bit about how it works, and why it doesnt take a gigantic amount of memory. The files are not actually loaded into python until the data is indexed. Upon indexing, the files at those indexes are read into python, resulting in a list of dictionaries. This means you can still contribute while working on a low resource system.

Getting text and abstracts

For text, there is the text function, which returns the text from a single document, the texts function, which returns the text from multiple documents, and the Paperset.texts() function, which gets the text from all documents:

print(cotools.text(data[0]))
print(cotools.texts(data[12:18]))

alltext = data.texts()
# alltext = cotools.texts(alldata)

For abstracts, we have a similar API:

print(cotools.abstract(data[0]))
print(cotools.abstracts(data[12:18]))

allabs = data.abstracts()
# allabs = cotools.abstracts(alldata)

Manipulating

You can also manipulate the documents with the Paperset.apply method:

keys = comm_use.apply(lambda x: list(x.keys()))
# then lets combine them into a set
print(set(sum(keys, [])))

Searching

You can search with a list OR a nested list! See the demo notebook for more examples!

txt = [["covid", "novel coronavirus"], ["ventilator", "cpap", "bipap"]]

x = cotools.search(comm_use, txt)
print(len(x))
print(len(cotools.search(comm_use, txt[0])))
print(len(cotools.search(comm_use, txt[-1])))

TODO

• Metadata
• Other data, for example data from this aggregate site and this google spreadsheet