D 2023

Syntactic vs Semantic Linear Abstraction and Refinement of Neural Networks

CHAU, Calvin, Jan KŘETÍNSKÝ and Stefanie MOHR

Basic information

Original name

Syntactic vs Semantic Linear Abstraction and Refinement of Neural Networks

Authors

CHAU, Calvin, Jan KŘETÍNSKÝ (203 Czech Republic, belonging to the institution) and Stefanie MOHR

Edition

Singapore, Automated Technology for Verification and Analysis. ATVA 2023, p. 401-421, 21 pp. 2023

Publisher

Springer

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10201 Computer sciences, information science, bioinformatics

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

electronic version available online

Impact factor

Impact factor: 0.402 in 2005

RIV identification code

RIV/00216224:14330/23:00133938

Organization unit

Faculty of Informatics

ISBN

978-3-031-45328-1

ISSN

Keywords in English

Abstraction; Machine learning; Neural network

Tags

International impact, Reviewed
Změněno: 8/4/2024 10:14, RNDr. Pavel Šmerk, Ph.D.

Abstract

V originále

Abstraction is a key verification technique to improve scalability. However, its use for neural networks is so far extremely limited. Previous approaches for abstracting classification networks replace several neurons with one of them that is similar enough. We can classify the similarity as defined either syntactically (using quantities on the connections between neurons) or semantically (on the activation values of neurons for various inputs). Unfortunately, the previous approaches only achieve moderate reductions, when implemented at all. In this work, we provide a more flexible framework, where a neuron can be replaced with a linear combination of other neurons, improving the reduction. We apply this approach both on syntactic and semantic abstractions, and implement and evaluate them experimentally. Further, we introduce a refinement method for our abstractions, allowing for finding a better balance between reduction and precision.