类别检测

Question

我用这个代码来检测类别..。

import numpy as np

# Words -> category
categories = {word: key for key, words in data.items() for word in words}

# Load the whole embedding matrix
embeddings_index = {}
with open('glove.6B.100d.txt', encoding="utf8") as f:
  for line in f:
    values = line.split()
    word = values[0]
    embed = np.array(values[1:], dtype=np.float32)
    embeddings_index[word] = embed
print('Loaded %s word vectors.' % len(embeddings_index))
# Embeddings for available words
data_embeddings = {key: value for key, value in embeddings_index.items() if key in categories.keys()}

# Processing the query
def process(query):
  query_embed = embeddings_index[query]
  scores = {}
  for word, embed in data_embeddings.items():
    category = categories[word]
    dist = query_embed.dot(embed)
    dist /= len(data[category])
    scores[category] = scores.get(category, 0) + dist
  return scores


# Testing
print(process('pizza'))

输出

{'service': 6.385544379552205, 'ambiance': 3.5752111077308655, 'Food': 12.912149047851562}

有没有办法我只得到最高精度的类别，如食品？？

Answer 1

def process(query):
  query_embed = embeddings_index[query]
  scores = {}
  for word, embed in data_embeddings.items():
    category = categories[word]
    dist = query_embed.dot(embed)
    dist /= len(data[category])
    scores[category] = scores.get(category, 0) + dist
  return max(scores, key=scores.get)

为此您可以使用max()。这将返回最大值的键名。