NASA Formal Methods

Non-linear Activation Functions.- Open and Closed-Loop Neural Network Verification using Polynomial Zonotopes.- Verifying Attention Robustness of Deep Neural Networks against Semantic Perturbations.- Formalizing Piecewise Affne Activation Functions of Neural Networks in Coq.- Verifying an Aircraft Collision Avoidance Neural Network with Marabou.- Strategy Synthesis in Markov Decision Processes Under Limited Sampling Access.- Learning Symbolic Timed Models from Concrete Timed Data.- Reward Shaping from Hybrid Systems Models in Reinforcement Learning.- Conservative Safety Monitors of Stochastic Dynamical Systems.- Code-level Formal Verification of Ellipsoidal Invariant Sets for Linear Parameter-Varying Systems.- Reasoning with Metric Temporal Logic and Resettable Skewed Clocks.- Formal Guarantees for Centralized Multi-Agent Synthesis with Spatial Constraints via Mixed-Integer Quadratic Programming.- A Framework for Policy Based Negotiation.- Rewrite-Based Decomposition of Signal Temporal Logic Specifications.- Quantitative Verification and Strategy Synthesis for BDI Agents.- Multi-Objective Task Assignment and Multiagent Planning with Hybrid GPU-CPU Acceleration.- Reasoning over Test Specifications using Assume-Guarantee Contracts.- Formally Proved Memory Controllers: From the Standards to Silicon.- Formalising Liveness Properties in Event-B with the Reflexive EB4EB Framework.- Formalized High Level Synthesis with Applications to Cryptographic Hardware.- From Natural Language Requirements to the Verification of Programmable Logic Controllers: Integrating FRET into PLCverif.- Automata-Based Software Model Checking of Hyperproperties.- Condition Synthesis Realizability via Constrained Horn Clauses.- A Toolkit for Automated Testing of Dafny.- Verified ALL(*) Parsing with Semantic Actions and Dynamic Input Validation.- Subtropical Satisfiability for SMT Solving.- A Linear Weight Transfer Rule for Local Search.- 1.1 : Zero-suppressed Decision Diagrams in External Memory.- Satisfiability of Non-Linear Transcendental Arithmetic as a Certificate Search Problem.