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Indexing Initiative Web API: Python Implementation

This Python-based API for the Indexing Initiative Scheduler facility was created to provide users with the ability to programmatically submit jobs to the Scheduler Batch and Interactive facilities instead of using the web-based interface.

Three programs are accessible via the Web API: MetaMap, the NLM Medical Text Indexer (MTI), and SemRep. The functionality in these programs includes: automatic indexing of MEDLINE citations, concept-based query expansion, analysis of complex Metathesaurus strings, accurate identification of the terminology and relationships in anatomical documents, and the extraction of chemical binding relations from biomedical text.

See Indexing Initiative's Web API page (https://ii.nlm.nih.gov/Web_API/index.shtml) for more information.

Prerequisites

Building and Installing the API

Installing prerequisites using pip:

python3 -m pip install requests requests-html
python3 -m pip install wheel
python3 -m pip install --upgrade pip
python3 -m pip install --upgrade build

Building the wheel package from sources after cloning the repository:

git clone https://github.com/lhncbc/skr_web_python_api.git
cd skr_web_python_api
python3 -m build

Installing the wheel package into your virtual environment:

python3 -m pip install dist/skr_web_api-0.1-py3-none-any.whl

Note: If you don't have write access to the installed Python then you may need to use virtual environment created using venv (https://docs.python.org/3/library/venv.html) or Miniconda (https://docs.conda.io/en/latest/miniconda.html).

Usage

To run the examples, you'll need a UTS API key which available in your UTS profile.

A Simple Batch Example

A simple example of submitting file to generic batch with validation to be processed by SemRep:

>>> email = 'username@address'
>>> apikey = '<UTS apikey>'
>>> inputfilename = 'doc.txt'
>>> inst = Submission(email, apikey)
>>> inst.init_generic_batch("semrep", "-D")
>>> inst.set_batch_file(inputfilename)
>>> response = inst.submit()
>>> print('response status: {}'.format(response.status_code))
response status: 200
>>> print('content: {}'.format(response.content))
... output omitted ...

Interactive Example

An example of processing a string using interactive MetaMap service:

>>> email = 'username@address'
>>> apikey = '<UTS apikey>'
>>> inputfilename = 'doc.txt'
>>> inst = Submission(email, apikey)
>>> inputtext = "A spinal tap was performed and oligoclonal bands were \
detected in the cerebrospinal fluid.\n"
>>> inst.init_mm_interactive(inputtext)
>>> response = inst.submit()
>>> print('response status: {}'.format(response.status_code))
response status: 200
>>> print('content:\n {}'.format(response.content.decode()))
content:
/dmzfiler/II_Group/MetaMap2020/public_mm/bin/SKRrun.20 /dmzfiler/II_Group/MetaMap2020/public_mm/bin/metamap20.BINARY.Linux --lexicon db -Z 2020AB -N
USER|MMI|5.18|Diagnostic lumbar puncture|C0553794|[diap]|["Spinal Tap"-tx-1-"spinal tap"-noun-0]|TX|2/10|
USER|MMI|5.18|Oligoclonal Bands|C4048246|[lbtr]|["Oligoclonal Bands"-tx-1-"oligoclonal bands"-noun-0]|TX|31/17|
USER|MMI|5.18|Oligoclonal Bands (protein)|C0069426|[aapp,imft]|["Oligoclonal Bands"-tx-1-"oligoclonal bands"-noun-0]|TX|31/17|
USER|MMI|5.18|Oligoclonal protein measurement|C0202205|[lbpr]|["Oligoclonal Bands"-tx-1-"oligoclonal bands"-noun-0]|TX|31/17|
USER|MMI|5.18|Performed|C0884358|[ftcn]|["PERFORMED"-tx-1-"performed"-verb-0]|TX|17/9|
USER|MMI|5.18|Spinal Puncture|C0037943|[hlca]|["Spinal Tap"-tx-1-"spinal tap"-noun-0]|TX|2/10|
USER|MMI|3.61|Cerebrospinal Fluid|C0007806|[bdsu]|["Spinal Fluid, Cerebro"-tx-1-"cerebrospinal fluid"-noun-0]|TX|70/19|
USER|MMI|3.61|In Cerebrospinal Fluid|C0007807|[ftcn]|["cerebrospinal fluid"-tx-1-"cerebrospinal fluid"-noun-0]|TX|70/19|
USER|MMI|3.56|Detected (finding)|C0442726|[fndg]|["Detected"-tx-1-"detected"-verb-0]|TX|54/8|
USER|MMI|3.56|Detection|C1511790|[topp]|["Detected"-tx-1-"detected"-verb-0]|TX|54/8|
>>>

Example programs

Generic Batch Example

The Python source file generic_batch_file.py, in the examples directory, contains source for example of submitting file to generic batch with validation.

Usage:

usage: generic_batch_file.py [-h] [-e EMAIL] [-a APIKEY] inputfile

Example of use:

python examples/generic_batch_file.py -e user@host -a 1234-5678-9ABC-DEF1 \
~/queries/iiquery

Interactive example sources

The directory examples also contains examples of using the MetaMap, MTI, and SemRep interactive services.

MetaMap:

python examples/mm_interactive.py -e $EMAIL -a $UTS_API_KEY

MTI:

python examples/mti_interactive.py -e $EMAIL -a $UTS_API_KEY

SemRep:

python examples/sr_interactive.py -e $EMAIL -a $UTS_API_KEY

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