Marc-André Morissette provides oversight for key technologies and research and development initiatives at Lexum.
With a professional focus on natural language systems, Marc-André has developed an expertise on search, information extraction, and automatic summarization. He is currently working on the application of Large Language Models to the legal domain and investigating Chain of Thought Prompting for search.
Over the course of his career, Marc-André has led several projects, including designing a search analytics package for legal search engines, creating an abstractive summarization system using pre-trained transformers, improving search relevance on broad queries by leveraging citation networks, deploying distributed search technology, improving search user interfaces, and developing a fuzzy citation recognition system.
Articles written by Marc-André Morissette
Solex : Lexum’s Latest Search Engine
In the movie The Man with the Golden Gun , the Solex is a revolutionary device that is meant to solve the 1973 energy crisis. After killing its British inventor, an elite assassin steals the Solex to sell it to foreign powers. James Bond is dispatched to find the assassin and recover the precious device. Because this is a James Bond movie, there’s also a laser . The Solex Agitator Solex also stands... Read more
How Fast Is your Search Engine?
The search engine is at the heart of most information management systems as it is often the principal conduit by which users navigate to the information they are looking for. As a leading provider of information management systems, Lexum has spent a lot of time developing a search engine platform that it applies to all its products. Our search engine provides professional features that are not... Read more
Whether you “like” it or not…
Lexum has recently conducted an analysis of the underlying technology behind Facebook Like , Twitter Tweet and other “social” buttons. The analysis revealed that, if used in the way prescribed by Facebook, Google, Twitter et al., these buttons create some significant privacy issues for Webmasters and their users. Before we get to the privacy issues however, it is appropriate to... Read more
Sub-second search on CanLII
Sub-second search on CanLII Marc-André Morissette*, Director of Technology, Lexum, morissette@lexum.com Daniel Shane, Senior developer, Lexum, shaned@lexum.com Abstract. Search engines are at the heart of a Legal Information Institute. They are the principal mean by which its users access the information it offers. It is therefore of critical importance that this tool be as efficient as possible... Read more