English

Discretizing Logged Interaction Data Biases Learning for Decision-Making

Machine Learning 2018-10-09 v1 Artificial Intelligence Machine Learning Systems and Control

Abstract

Time series data that are not measured at regular intervals are commonly discretized as a preprocessing step. For example, data about customer arrival times might be simplified by summing the number of arrivals within hourly intervals, which produces a discrete-time time series that is easier to model. In this abstract, we show that discretization introduces a bias that affects models trained for decision-making. We refer to this phenomenon as discretization bias, and show that we can avoid it by using continuous-time models instead.

Keywords

Cite

@article{arxiv.1810.03025,
  title  = {Discretizing Logged Interaction Data Biases Learning for Decision-Making},
  author = {Peter Schulam and Suchi Saria},
  journal= {arXiv preprint arXiv:1810.03025},
  year   = {2018}
}

Comments

This is a standalone short paper describing a new type of bias that can arise when learning from time series data for sequential decision-making problems

R2 v1 2026-06-23T04:30:41.740Z