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INDRA World Workflows


Integrated system

INDRA World is part of the integrated Causal Relation Extraction and Assembly Toolkit where it serves as an integrator of reader outputs and incremental knowledge assembly. In this context, INDRA World is running as a containerized service and exposes a REST API to communicate with other components. This REST API is available at http://localhost:9444 by default.

INDRA World also exposes an Assembly Dashboard where you can monitor (query for) reader outputs that have already been produced for some input documents, and filter these to define a scope for assembly. Then you can fill out some details to define and generate a new assembled corpus that can be loaded into the CauseMos system for interactive exploration. The dashboard is available at http://localhost:9444/dashboard by default. Here, you can enter some optional search criteria to find reader output records and click on “Find reader output records” to get a table of results. Once you identify an appropriate set, you can fill out the second form on the bottom with a corpus ID, display name and description, and then click on Run assembly to produce the results.

Once a corpus is created, it can be loaded into CauseMos. INDRA World’s REST API also allows incrementally assembling new content against an existing corpus.

Reading and assembly

In this workflow INDRA World processes outputs from one or more reading systems (Eidos, Hume or Sofia) as input. We assume that each reading system was already run and produced a number of output files. INDRA World assembly can be done using the command line interface either natively (if an appropriate Python environment and INDRA World and its dependencies are installed) or through Docker.

indra_world --reader-output-files READER_OUTPUT_FILES --ontology-path ONTOLOGY_PATH --output-folder OUTPUT_FOLDER

In the above, READER_OUTPUT_FILES refers to a JSON file with the following structure

 "hume": [

where keys are reading systems and values are lists of paths to their output files.

ONTOLOGY_PATH is a path to a standard ontology YAML file. OUTPUT_FOLDER refers to a folder in which the resulting statements.json JSON-L dump of assembled INDRA Statements will be written. For more optional arguments, see the CLI documentation.