HardNLPnlp-090

Rule-Based Verb Lemmatization

Problem

Lemmatize a verb with simple rules. Return irregular[word] when present.

Otherwise, for words longer than 5 ending in 'ing' drop the suffix, and for words longer than 4 ending in 'ed' drop the suffix. If the remaining stem ends in a doubled consonant other than 'l' or 's', drop one copy. Words matching no rule are returned unchanged.

Hint

Undoubling happens only for doubled consonants other than l and s.

Test cases

case 1

in: ["running",{}]

expected: "run"

case 2

in: ["stopped",{}]

expected: "stop"

case 3

in: ["walked",{}]

expected: "walk"

case 4

in: ["went",{"went":"go"}]

expected: "go"

case 5

in: ["called",{}]

expected: "call"

Starter codePython

def rule_based_lemma_verbs(word, irregular):
    # Your code here
    pass

5 test cases · run your code against them in the editor