Code for Africa Aleph
This is Code for Africa's copy of Aleph. See aleph-dokku for how we use it.
Truth cannot penetrate a closed mind. If all places in the universe are in the Aleph, then all stars, all lamps, all sources of light are in it, too. - The Aleph, Jorge Luis Borges
aleph is a tool for indexing large amounts of both unstructured (PDF, Word, HTML) and structured (CSV, XLS, SQL) data for easy browsing and search. It is built with investigative reporting as a primary use case.
aleph allows cross-referencing mentions of well-known entities (such as people and companies) against watchlists, e.g. from prior research or public datasets.
Here's some key features:
- Web-based UI for search across large document and data sets.
- Watchlist editor for making custom sets of entities to be tracked.
- Equal support for structured (i.e. tabular) and unstructured (i.e. textual) sources.
- Importers include a local filesystem traverser, web crawlers and a SQL query importer.
- Document entity tagger (regular expressions-based, and optionally using NLP).
- Support for OCR, unpacking Zip/RAR/Tarballs, language and encoding detection.
- Entity watchlist importers for OpenNames and
- OAuth authorization and access control on a per-source and per-watchlist basis.
- Excel export for search result sets.
The documentation for aleph exists in the project wiki. Please refer to:
- Installation with Docker and in development mode.
- Usage for loading data and maintaining the system.
- For a conceptual overview, refer to the glossary.
aleph is used by multiple organisations, including Code for Africa, OCCRP and OpenOil. For coordination, the following Google Group exists: aleph-search
The MIT License (MIT)
Copyright (c) 2014-2016 Friedrich Lindenberg
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