ServiceNow AI Research

Natural Language Processing

LTL and Beyond: Formal Languages for Reward Function Specification in Reinforcement Learning
In Reinforcement Learning (RL), an agent is guided by the rewards it receives from the reward function. Unfortunately, it may take many …
Strong Baselines for Simple Question Answering over Knowledge Graphs with and without Neural Networks
We examine the problem of question answering over knowledge graphs, focusing on simple questions that can be answered by the lookup of …
Accurate Supervised and Semi-Supervised Machine Reading for Long Documents
We introduce a hierarchical architecture for machine reading capable of extracting precise information from long documents. The model …
Coarse-to-Fine Question Answering for Long Documents
We present a framework for question answering that can efficiently scale to longer documents while maintaining or even improving …