AI Question Answering: Slides for Talk Today

Slides for talk today.  Recording will follow.

Sept. 13 10:30 AM ET Engineered AI Still Matters for Question Answering, By J. William Murdock, IBM

Zoom meeting Link: https://zoom.us/j/7371462221
Slides and recording will end up here:  http://cognitive-science.info/community/weekly-update/

Description: Many question-answering systems rely on a significant amount of engineering effort. They often require both knowledge bases and rules, which can be very expensive to create. Even when there is significant statistical machine learning involved in these systems, there is also an enormous amount of effort spent on identifying what features are useful for the machine learning and implementing capabilities (often using knowledge bases and rules) to assign values to those features. However, in recent years an alternative approach has been growing in popularity: single-strategy systems in which one statistical model is used to address the entire task. In this presentation, I will describe work in which we pursue both approaches and also integrate the two together. I describe results across two different data sets and show that purely statistical approaches are an excellent fit for some data, but that engineered knowledge and rules remain useful for more realistic and open-ended tasks. For additional details, see our paper at http://www.cogsys.org/papers/ACSvol6/article06.pdf   .....