22、Tree Automata Techniques and Applications

Tree Automata Techniques and Applications

1. Introduction to Tree Automata

Tree automata are a powerful tool in computer science, particularly useful for handling tree-structured data. They serve as a fundamental model for processing hierarchical structures, such as XML documents, abstract syntax trees in compilers, and logical formulas. In this article, we will explore the basics of tree automata, their operations, and their applications across various domains.

1.1 Basic Concepts

A tree automaton operates on labeled trees, where each node is associated with a label from a predefined alphabet. There are two primary types of tree automata:

• Deterministic Tree Automaton (DTA) : Each state