no code implementations • 19 Jul 2024 • Md Sultan Al Nahian, Ramakanth Kavuluru
Extractive question answering over clinical text is a crucial need to help deal with the deluge of clinical text generated in hospitals.
no code implementations • 19 Nov 2022 • Md Sultan Al Nahian, Spencer Frazier, Brent Harrison, Mark Riedl
To do this, we extend a dataset that has been previously used to train a binary normative classifier with annotations of moral principles.
no code implementations • 19 Apr 2021 • Md Sultan Al Nahian, Spencer Frazier, Brent Harrison, Mark Riedl
As more machine learning agents interact with humans, it is increasingly a prospect that an agent trained to perform a task optimally, using only a measure of task performance as feedback, can violate societal norms for acceptable behavior or cause harm.
1 code implementation • 4 Apr 2021 • Tasmia Tasrin, Md Sultan Al Nahian, Habarakadage Perera, Brent Harrison
In this work, we explore how natural language advice can be used to provide a richer feedback signal to a reinforcement learning agent by extending policy shaping, a well-known Interactive reinforcement learning technique.
no code implementations • 23 Apr 2020 • Tasmia Tasrin, Md Sultan Al Nahian, Brent Harrison
In this work, we propose a deep neural architecture that uses an attention mechanism which utilizes region based image features, the natural language question asked, and semantic knowledge extracted from the regions of an image to produce open-ended answers for questions asked in a visual question answering (VQA) task.
no code implementations • 7 Dec 2019 • Spencer Frazier, Md Sultan Al Nahian, Mark Riedl, Brent Harrison
Value alignment is a property of an intelligent agent indicating that it can only pursue goals and activities that are beneficial to humans.
no code implementations • 26 Sep 2019 • Md Sultan Al Nahian, Tasmia Tasrin, Sagar Gandhi, Ryan Gaines, Brent Harrison
One of the primary challenges of visual storytelling is developing techniques that can maintain the context of the story over long event sequences to generate human-like stories.