Predicting Smoking Events with a Time-Varying Semi-Parametric Hawkes Process Model.

Journal Article (Journal Article)

Health risks from cigarette smoking - the leading cause of preventable death in the United States - can be substantially reduced by quitting. Although most smokers are motivated to quit, the majority of quit attempts fail. A number of studies have explored the role of self-reported symptoms, physiologic measurements, and environmental context on smoking risk, but less work has focused on the temporal dynamics of smoking events, including daily patterns and related nicotine effects. In this work, we examine these dynamics and improve risk prediction by modeling smoking as a self-triggering process, in which previous smoking events modify current risk. Specifically, we fit smoking events self-reported by 42 smokers to a time-varying semi-parametric Hawkes process (TV-SPHP) developed for this purpose. Results show that the TV-SPHP achieves superior prediction performance compared to related and existing models, with the incorporation of time-varying predictors having greatest benefit over longer prediction windows. Moreover, the impact function illustrates previously unknown temporal dynamics of smoking, with possible connections to nicotine metabolism to be explored in future work through a randomized study design. By more effectively predicting smoking events and exploring a self-triggering component of smoking risk, this work supports development of novel or improved cessation interventions that aim to reduce death from smoking.

Full Text

Duke Authors

Cited Authors

  • Engelhard, M; Xu, H; Carin, L; Oliver, JA; Hallyburton, M; McClernon, FJ

Published Date

  • August 2018

Published In

  • Proc Mach Learn Res

Volume / Issue

  • 85 /

Start / End Page

  • 312 - 331

PubMed ID

  • 30899917

Pubmed Central ID

  • PMC6424486

Electronic International Standard Serial Number (EISSN)

  • 2640-3498


  • eng

Conference Location

  • United States