4. More on FSAs: Limitations and closure properties 1 Interchangeable subexpressions Now forget about FSAs for a moment, and just consider sets of strings “out…
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1. Expressions, variables and substitution An expression (or term) is a piece of code, or a program. Examples include 3, 3 + 4, “hello” and…
Module Code COM00023I BEng, BSc, MEng and MMath Degree Examinations 2020-2021 Department: Computer Science Title: Theory 3 (THE3) Time Allowed: 24 hours (NOTE: Late papers…
3. Introducing finite-state automata First some standard stage-setting definitions: (1) For any set Σ, we define Σ∗ as the smallest set such that: • ε∈Σ∗,and…
6. Context-free grammars A canonical first example of a context-free grammar (CFG) is shown in (1). This grammar generates the stringset {anbn | n ≥…
Tim Hunter Ling185A, Winter 2021, UCLA Guidelines and ideas for final mini-projects You have a fair amount of freedom in choosing what to do for…
4 Probabilistic CFGs The “hidden structure” here has a more complicated shape than we had to deal with for PFSAs: • With a (P)FSA, the…
Computer Science 230 Computer Architecture and Assembly Language January 2021 Assignment 2 Due: Monday, March 8th, 11:55 pm by Brightspace submission (Late submissions not accepted)…