Practice Initialization (processing Substrings Of Length 1) (5.5.2.1) - Context-Free Grammars (CFG) and Languages
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Initialization (Processing Substrings of Length 1)

Practice - Initialization (Processing Substrings of Length 1)

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the purpose of the initialization phase in the CYK algorithm?

💡 Hint: Think about what we need to start tracking.

Question 2 Easy

In Chomsky Normal Form, what does a production rule of type A -> a signify?

💡 Hint: Consider the structure of the rules.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the initialization step in the CYK algorithm focus on?

Processing long substrings
Processing substrings of length 1
Processing entire strings

💡 Hint: Think about how we start breaking down the strings.

Question 2

True or False: In CNF, a production rule can be of the form A -> BC.

True
False

💡 Hint: Recall the forms allowed for rules in CNF.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given the input string 'xyz' with a grammar: X -> x, Y -> y, Z -> z, derive T[i,1] for each i.

💡 Hint: Identify which non-terminals correspond to each character.

Challenge 2 Hard

Describe the process of filling T[i,1] and then transitioning to T[i,j] for j=2 while using the earlier entries.

💡 Hint: Think about the connections between non-terminals from T[i, j-1].

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Reference links

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