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Use the CanLII AI to Help With Boolean Searching

CanLII recently announced CanLII Search+, a “research assistant powered by artificial intelligence”. As you might expect, it pulls from CanLII’s extensive collection of case law. 

There are two elements to CanLII Search+. First, it takes a plain language search and translates it into a Boolean search. It will give you multiple search options, of which it will recommend one. You do have the option to use one of the searches CanLII didn’t recommend or to edit the search it did recommend. If you don’t use Boolean searching regularly, this is an incredibly helpful tool, and even if you use Boolean searching regularly, you may find CanLII makes suggestions you would not otherwise have thought of. 

CanLII search box and proposed search query

Once CanLII gives you your results, you can then get it to rank them by relevance. CanLII gives each result a score out of 5 and includes what factors were involved in assigning that score.

Link to a case that CanLII marked as 0/5 for relevance along with an explanation of why it chose that ranking

Note that unlike some other legal research AIs, it doesn’t present its answers in a final work product.

To sign up to use the tool, visit the CanLII Search+ page. There is no charge to use it, but there is a daily usage limit. 

Susannah Tredwell

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