Question

我正在尝试运行W2V算法。我发现索引错误，不确定我要去哪里。这是错误：

IndexError：只有整数，切片（:），省略号（...），numpy.newaxis（None）和整数或布尔数组都是有效索引

这是代码：

    def makeFeatureVec(words, model, num_features):
# Function to average all of the word vectors in a given
# paragraph
#
# Pre-initialize an empty numpy array (for speed)
featureVec = np.zeros((num_features,),dtype="float32")
#
nwords = 0.
# 
# Index2word is a list that contains the names of the words in 
# the model's vocabulary. Convert it to a set, for speed 
index2word_set = set(model.wv.index2word)
#
# Loop over each word in the review and, if it is in the model's
# vocaublary, add its feature vector to the total
for word in words:
    if word in index2word_set: 
        nwords = nwords + 1.
        featureVec = np.add(featureVec,model[word])
# 
# Divide the result by the number of words to get the average
featureVec = np.true_divide(featureVec,nwords)
return featureVec

    def getAvgFeatureVecs(reviews,model,num_features):
# Given a set of reviews (each one a list of words), calculate 
# the average feature vector for each one and return a 2D numpy array 
# 
# Initialize a counter
counter = 0.
# 
# Preallocate a 2D numpy array, for speed
reviewFeatureVecs = np.zeros((len(reviews),num_features),dtype="float32")
# 
# Loop through the reviews
for review in reviews:
   #
   # Print a status message every 1000th review
    if counter%1000. == 0.:
        print ("Review %d of %d" % (counter, len(reviews)))
   # 
   # Call the function (defined above) that makes average feature vectors
    reviewFeatureVecs[counter] = makeFeatureVec(review, model,num_features)
   #
   # Increment the counter
    counter = counter + 1.
return reviewFeatureVecs

这段代码来自于话语包，会议包，爆米花，笑话袋。我不确定错误在哪里。我发现np.divide引发错误。我正在Windows上

Answer 1

counter = counter + 1.

应该是

counter = counter + 1（注意点）或counter += 1。

点使counter成为浮点数（因为1.等于1.0），并且浮点数不能用作索引。

Answer 2

切片变量必须为整数。（将浮点值替换为整数，例如：0。到0）

<script>
var url_file_to_run = "{% url "your_app:file_to_run_adress" 0 %}";
var url = "{% url "your_app:python_output" 0 %}";
$.ajax({
  url: url_file_to_run,

  }
}).done(function(data) {
    $( location ).attr("href", url);
  });
</script>

IndexError：只有整数，切片（`：`），省略号（`...`），numpy.newaxis（`None`）和整数或布尔数组才是有效索引”

2 个答案: