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Questions tagged [sentiment-analysis]

Sentiment analysis refers to categorizing some given data as to what sentiment(s) it expresses. Usually, it refers to extracting sentiment from text, e.g. tweets or blog posts.

2020 questions
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Sentiment analysis for Twitter in Python

I'm looking for an open source implementation, preferably in python, of Textual Sentiment Analysis (http://en.wikipedia.org/wiki/Sentiment_analysis). Is anyone familiar with such open source implementation I can use? I'm writing an application that…
Ran
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NLTK and Stopwords Fail #lookuperror

I am trying to start a project of sentiment analysis and I will use the stop words method. I made some research and I found that nltk have stopwords but when I execute the command there is an error. What I do is the following, in order to know which…
Facundo
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Training data for sentiment analysis

Where can I get a corpus of documents that have already been classified as positive/negative for sentiment in the corporate domain? I want a large corpus of documents that provide reviews for companies, like reviews of companies provided by analysts…
London guy
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Sentiment Analysis Dictionaries

I was wondering if anybody knew where I could obtain dictionaries of positive and negative words. I'm looking into sentiment analysis and this is a crucial part of it.
user387049
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Feature Selection and Reduction for Text Classification

I am currently working on a project, a simple sentiment analyzer such that there will be 2 and 3 classes in separate cases. I am using a corpus that is pretty rich in the means of unique words (around 200.000). I used bag-of-words method for feature…
clancularius
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Unsupervised Sentiment Analysis

I've been reading a lot of articles that explain the need for an initial set of texts that are classified as either 'positive' or 'negative' before a sentiment analysis system will really work. My question is: Has anyone attempted just doing a…
Trindaz
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How is the Vader 'compound' polarity score calculated in Python NLTK?

I'm using the Vader SentimentAnalyzer to obtain the polarity scores. I used the probability scores for positive/negative/neutral before, but I just realized the "compound" score, ranging from -1 (most neg) to 1 (most pos) would provide a single…
alicecongcong
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Stanford nlp for python

All I want to do is find the sentiment (positive/negative/neutral) of any given string. On researching I came across Stanford NLP. But sadly its in Java. Any ideas on how can I make it work for python?
90abyss
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What exactly is an n Gram?

I found this previous question on SO: N-grams: Explanation + 2 applications. The OP gave this example and asked if it was correct: Sentence: "I live in NY." word level bigrams (2 for n): "# I', "I live", "live in", "in NY", 'NY #' character level…
user2649614
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Machine Learning (tensorflow / sklearn) in Django?

I have a django form, which is collecting user response. I also have a tensorflow sentences classification model. What is the best/standard way to put these two together. Details: tensorflow model was trained on the Movie Review data from Rotten…
Subrat
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Sentiment analysis using R

Are there any R packages that focus on sentiment analysis? I have a small survey where users can write a comment about their experience of using a web-tool. I ask for a numerical ranking, and there is the option of including a comment. I am…
djq
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Best Algorithmic Approach to Sentiment Analysis

My requirement is taking in news articles and determining if they are positive or negative about a subject. I am taking the approach outlined below, but I keep reading NLP may be of use here. All that I have read has pointed at NLP detecting…
user387049
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nltk NaiveBayesClassifier training for sentiment analysis

I am training the NaiveBayesClassifier in Python using sentences, and it gives me the error below. I do not understand what the error might be, and any help would be good. I have tried many other input formats, but the error remains. The code given…
student001
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AttributeError: 'float' object has no attribute 'lower'

I'm facing this attribute error and I'm stuck at how to handle float values if they appear in a tweet.The streaming tweet has to be lower cased and tokenized so i have used split function. Can somebody please help me to deal with it, any workaround…
Vishal Kharde
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Sentiment Analysis using tensorflow

I am exploring tensorflow and would like to do sentiment analysis using the options available. I had a look at the following tutorial http://www.tensorflow.org/tutorials/recurrent/index.html#language_modeling I have worked woth Naive Bayes…
Radhakrishnan
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