정수 인코딩 실습

실습 설명

코퍼스에 포함된 단어 토큰의 등장 빈도 기준으로 정수 인덱스를 생성하고, 모든 토큰들을 정수 인덱스로 변환해 주세요.

• 주어진 코퍼스의 단어별 등장 빈도를 계산하고, 많이 등장한 단어순으로 정렬해 주세요.
• 빈도수 기준으로 정렬한 단어들에 인덱스를 부여해 주세요.
• 부여된 정수 인덱스를 기준으로 모든 토큰들을 정수 인코딩해 주세요.

 
main.py

# 필요한 패키지와 함수 불러오기
import nltk
from nltk.tokenize import word_tokenize
from collections import Counter
from text import TEXT
nltk.download('punkt')

word_to_idx = {} # 단어 별 인덱스 부여하기 위한 딕셔너리
i = 0
encoded_idx = [] # 각 토큰의 정수 인덱스를 부여하기 위한 리스트
corpus = TEXT

tokenized_words = word_tokenize(corpus)

# 단어의 빈도수를 계산하여 정렬하는 코드를 작성하세요
vocab = Counter(tokenized_words)
vocab = vocab.most_common()

for (word, frequency) in vocab:
    # 여기에 코드를 작성하세요
    i = i + 1
    word_to_idx[word] = i

for word in tokenized_words:
    # 여기에 코드를 작성하세요
    idx = word_to_idx[word]
    encoded_idx.append(idx)


# 테스트 코드
encoded_idx

text.py

TEXT = """Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, 'and what is the use of a book,' thought Alice 'without pictures or conversation?'
So she was considering in her own mind (as well as she could, for the hot day made her feel very sleepy and stupid), whether the pleasure of making a daisy-chain would be worth the trouble of getting up and picking the daisies, when suddenly a White Rabbit with pink eyes ran close by her.
There was nothing so very remarkable in that; nor did Alice think it so very much out of the way to hear the Rabbit say to itself, 'Oh dear! Oh dear! I shall be late!' (when she thought it over afterwards, it occurred to her that she ought to have wondered at this, but at the time it all seemed quite natural); but when the Rabbit actually took a watch out of its waistcoat-pocket, and looked at it, and then hurried on, Alice started to her feet, for it flashed across her mind that she had never before seen a rabbit with either a waistcoat-pocket, or a watch to take out of it, and burning with curiosity, she ran across the field after it, and fortunately was just in time to see it pop down a large rabbit-hole under the hedge.
In another moment down went Alice after it, never once considering how in the world she was to get out again.
The rabbit-hole went straight on like a tunnel for some way, and then dipped suddenly down, so suddenly that Alice had not a moment to think about stopping herself before she found herself falling down a very deep well.
Either the well was very deep, or she fell very slowly, for she had plenty of time as she went down to look about her and to wonder what was going to happen next. First, she tried to look down and make out what she was coming to, but it was too dark to see anything; then she looked at the sides of the well, and noticed that they were filled with cupboards and book-shelves; here and there she saw maps and pictures hung upon pegs. She took down a jar from one of the shelves as she passed; it was labelled 'ORANGE MARMALADE', but to her great disappointment it was empty: she did not like to drop the jar for fear of killing somebody, so managed to put it into one of the cupboards as she fell past it.
"""

실행결과

 

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