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Welcome to the DataLex Community

About DataLex

DataLex - Smart legal decision support and legal expert systems - AustLII 's rule-based legal inferencing platform

DataLex is developed by Andrew Mowbray, Philip Chung & Graham Greenleaf, with assistance of AustLII staff

Background articles on AustLII's approach to using AI in law

Articles by others

Tutorials, Manuals & Tools

  • Knowledge-base Development Tools - an interface for developing test KBs outside the AustLII Communities environment
  • Standard Inclusions KB - It is valuable to INCLUDE this in any other knowledge-base. It has declarations for all non-standard verbs, and is intended to include further similar matters.
  • Quick Tutorial - Building DataLex decision support systems (17 May 2019) - This is a brief introduction to the DataLex software, covering key elements in building simple knowledge-bases (KB), and interfaces.
  • Building Datalex Decision Support Systems: A Tutorial on Rule-Based Reasoning in Law (2017) (Available on SSRN) - This is a more comprehensive introduction to both DataLex KB development and current interfaces.
  • AustLII's DataLex Developer's Manual (June 2019) - This is the full manual for developing knowledge-bases (KB) using the DataLex software. (on SSRN)
  • Keywords supported by the DataLex KB software (listing - see Tutorials and Manual for details)

Knowledge-base Examples

Training demonstrations

These examples are small segments of knowledge-bases used to demonstrate some of the steps in how rules are developed in DataLex knowledge bases
  • Goal Tests - These are some very abstract (non-legal) examples to demonstrate the differences between backward and forward chaining rules
  • Electoral law consultation - A longer example (still under development) concerning disqualification under s44 of the Commonwealth of Australia Constitution Act (Cth) and sections of the Commonwealth Electoral Act (Cth).
  • Privacy Act 1988 (Cth) procedures consultation (PrivacyActKB) - An example which focuses on procedural steps in making a complaint to the Privacy Commissioner and appealing against a determination. It is designed to be INCLUDED in (ie called from) a knowledge base located outside AustLII Communities. It can also be run from this KB.
  • Freedom of Information consultation - A simple example using section 11 of the Freedom of Information Act 1982 (Cth).

Larger (and older) knowledge-bases

These are lengthier and more complex examples of knowledge-bases. The law in these examples is not up-to-date and they are only provided as demonstration examples of how more complex knowledge-bases can be developed.

DataLex Web Utilities

  • WebTopicList - all topics in alphabetical order
  • WebChanges - recent topic changes in this web
  • WebNotify - subscribe to an e-mail alert sent when topics change
  • WebRss, WebAtom - RSS and ATOM news feeds of topic changes
  • WebStatistics - listing popular topics and top contributors
  • WebPreferences - preferences of this web

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