Search Results for author: Christopher S. Josef

Found 3 papers, 1 papers with code

Causal Graph Discovery from Self and Mutually Exciting Time Series

no code implementations26 Jan 2023 Song Wei, Yao Xie, Christopher S. Josef, Rishikesan Kamaleswaran

We present a generalized linear structural causal model, coupled with a novel data-adaptive linear regularization, to recover causal directed acyclic graphs (DAGs) from time series.

Causal Discovery Time Series +1

Granger Causal Chain Discovery for Sepsis-Associated Derangements via Continuous-Time Hawkes Processes

1 code implementation9 Sep 2022 Song Wei, Yao Xie, Christopher S. Josef, Rishikesan Kamaleswaran

Modern health care systems are conducting continuous, automated surveillance of the electronic medical record (EMR) to identify adverse events with increasing frequency; however, many events such as sepsis do not have elucidated prodromes (i. e., event chains) that can be used to identify and intercept the adverse event early in its course.

Causal Graph Discovery from Self and Mutually Exciting Time Series

no code implementations4 Jun 2021 Song Wei, Yao Xie, Christopher S. Josef, Rishikesan Kamaleswaran

We present a generalized linear structural causal model, coupled with a novel data-adaptive linear regularization, to recover causal directed acyclic graphs (DAGs) from time series.

Causal Discovery feature selection +2

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