학술논문

Likelihood-Based Adaptive Learning in Stochastic State-Based Models
Document Type
Periodical
Source
IEEE Signal Processing Letters IEEE Signal Process. Lett. Signal Processing Letters, IEEE. 26(7):1031-1035 Jul, 2019
Subject
Signal Processing and Analysis
Computing and Processing
Communication, Networking and Broadcast Technologies
Adaptation models
Stochastic processes
Convergence
Adaptive learning
Biological system modeling
Reliability
Signal processing algorithms
Bioinformatics and genomics
statistical learning
adaptive signal processing
Language
ISSN
1070-9908
1558-2361
Abstract
This letter presents an adaptive learning framework for estimating structural parameters in stochastic state-based models (SSMs). SSMs are a useful modeling tool in systems biology and medicine. While models in these disciplines are traditionally hand-crafted, an automated generation based on experimental data becomes a topic of research interest. In particular, our goal is to classify measured processes using the generated models. An innovative likelihood-based adaptive learning approach capable of learning the structural parameters, i.e., the arc weights of SSMs from data and exploiting the reliability of detected inputs is presented in this letter. Its convergence behavior is analyzed and an expression for the error at steady state is derived. Simulations assess the performance of the proposed and existing algorithms for a gene regulatory network.