Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Ilbin Lee"'
Autor:
Sacha Davis, Jin Zhang, Ilbin Lee, Mostafa Rezaei, Russell Greiner, Finlay A. McAlister, Raj Padwal
Publikováno v:
BMC Health Services Research, Vol 22, Iss 1, Pp 1-10 (2022)
Abstract Background: Hospital readmissions are one of the costliest challenges facing healthcare systems, but conventional models fail to predict readmissions well. Many existing models use exclusively manually-engineered features, which are labor in
Externí odkaz:
https://doaj.org/article/72a99919169140dbba0b140c56db4da1
Autor:
Ilbin Lee
Publikováno v:
Operations Research.
When applying decision models, we often estimate input parameters using data. In healthcare and some other applications, data are collected from a population of different entities, such as patients. Thus, one faces a modeling question of whether to e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a45927a2102e811a4434d97c7627782
https://doi.org/10.1287/opre.2023.2474
https://doi.org/10.1287/opre.2023.2474
Publikováno v:
European Journal of Operational Research. 296:44-59
Sensitivity analysis and multiparametric programming in optimization modeling study variations of optimal value and solutions in the presence of uncertain input parameters. In this paper, we consider simultaneous variations in the inputs of the objec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::194b6120054791a910647d85a3dd4f4e
https://doi.org/10.1016/j.ejor.2021.04.004
https://doi.org/10.1016/j.ejor.2021.04.004
Publikováno v:
Eur J Oper Res
This paper studies computational approaches for solving large-scale optimization problems using a Lagrangian dual reformulation, solved by parallel sub-gradient methods. Since there are many possible reformulations for a given problem, an important q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa0c5906b2a0283d492a1b8c835438b1
https://europepmc.org/articles/PMC8754397/
https://europepmc.org/articles/PMC8754397/
Publikováno v:
INFORMS Journal on Computing. 31:302-317
Solving a large batch of linear programs (LPs) with varying parameters is needed in stochastic programming and sensitivity analysis, among other modeling frameworks. Solving the LPs for all combinations of given parameter values, called the brute-for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00e3f21fa740e3e8a8c5f0fc249d2def
https://doi.org/10.1287/ijoc.2018.0838
https://doi.org/10.1287/ijoc.2018.0838
Publikováno v:
European Journal of Operational Research. 270:898-906
In high-dimensional optimization problems where a large number of decisions need to be made, the resulting solution may exhibit high sensitivity to perturbations in the input parameters, which hinders reliable decision-making. This is particularly pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d837c3eab72e8f1f48d0f161be91475d
https://doi.org/10.1016/j.ejor.2017.10.037
https://doi.org/10.1016/j.ejor.2017.10.037
Publikováno v:
Health Services Research. 53:3592-3616
Objective To quantify the impact of multiyear utilization of preventive dental services on downstream dental care utilization and expenditures for children. Data sources/study setting We followed 0.93 million Medicaid-enrolled children who were 3-6 y
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::835fa6d93f2bec56bb9ff6b8fc5cfc2b
https://doi.org/10.1111/1475-6773.12811
https://doi.org/10.1111/1475-6773.12811
Publikováno v:
Operations Research. 65:1029-1042
We consider discounted Markov decision processes (MDPs) with countably-infinite state spaces, finite action spaces, and unbounded rewards. Typical examples of such MDPs are inventory management and queueing control problems in which there is no speci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e509f8bc90cc24576ffbadf3fa831cb
https://doi.org/10.1287/opre.2017.1598
https://doi.org/10.1287/opre.2017.1598
Publikováno v:
Operations Research Letters. 42:238-245
We study infinite-horizon nonstationary Markov decision processes with discounted cost criterion, finite state space, and side constraints. This problem can equivalently be formulated as a countably infinite linear program (CILP), a linear program wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c8531e6c1f16a15feb3af19d641fc18
https://doi.org/10.1016/j.orl.2014.03.001
https://doi.org/10.1016/j.orl.2014.03.001