Sentiment-Analysis | Tweets Based Sentiment Analysis to Detect | Predictive Analytics library
kandi X-RAY | Sentiment-Analysis Summary
kandi X-RAY | Sentiment-Analysis Summary
Sentiment analysis, the automated extraction of emotional data from text or speech (Kharde & Sonawane, 2016), has long been a favored tool for its ability to gauge consumers’ opinions and feelings en masse with minimal input from the analyst’s end. It is often performed on Twitter and Facebook data to gain insight into how the public views a particular brand or a political candidate, or to measure the trust placed into a particular financial stock (Feldman, 2013). As such, we feel that sentiment analysis would be the perfect tool for answering a sociological question such as ours. We will first gather a lot of tweets from Twitter, which can serve as a proxy to individuals’ thoughts and the general public mood(Bollen, 2011). Next, we will perform sentiment analysis on each tweet to determine whether it is happy or sad. Then, we will split the tweets up by date and tally up the number of happy and sad tweets for each day to determine how happy or sad individuals in different regions of California felt on each day in November. Finally, we will analyze the trends in the total numbers of happy and sad tweets and compare those trends with recent events to answer our question.
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- Train the KNeighbors classifier .
- Create a bow vector from a tweet text .
- Get the WOEID of a location .
- Get the date of the given time .
- Import the weights from a dictionary file .
- Get the temperature for a given weather .
- Get data from file .
- One - hot encoding .
Sentiment-Analysis Key Features
Sentiment-Analysis Examples and Code Snippets
Community Discussions
Trending Discussions on Sentiment-Analysis
QUESTION
I am running Aspect-Based-Sentiment-Analysis. And I get the output. I want to get this output as a string. I spent several hours in googling how to refer to the output and not only to see the output when I run a code. Maybe I don't comprehend something in Python basics and need huge support on that.
The code I am talking about is as follows:
...ANSWER
Answered 2021-May-22 at 16:23Looks like the command is just printing the output to stdout
instead of acutally returning an object containing the information you are looking for. You may want to try and capture stdout
while running the function. The answer to this question should be helpful.
QUESTION
I am using transformers pipeline to perform sentiment analysis on sample texts from 6 different languages. I tested the code in my local Jupyterhub and it worked fine. But when I wrap it in a flask application and create a docker image out of it, the execution is hanging at the pipeline inference line and its taking forever to return the sentiment scores.
- mac os catalina 10.15.7 (no GPU)
- Python version : 3.8
- Transformers package : 4.4.2
- torch version : 1.6.0
ANSWER
Answered 2021-Apr-13 at 12:55Flask uses port 5000. In creating a docker image, it's important to make sure that the port is set up this way. Replace the last line with the following:
QUESTION
i'm new to python and have to make a natural language processing task. Using a kaggle dataset a sentiment classify should be implemented using python. For this i'm using a dataframe and the LogisticRegression, as described in this article and everythin works fine.
Now i want to know if it is possible to classify another string which is not in the dataset, so that i can experiment with the classifier interactively.
Is this possible? Thank you!
...ANSWER
Answered 2021-Apr-17 at 19:25You will have to manually run all the preprocessing on youur new data, than predict.
That is:
So first (Data Cleaning) and other functions which you've called which edit the data,
then run the (Create a bag of words) part, and only
Then use the fitted LR model to predict on this (preprocessed) data.
QUESTION
I'm currently using this repo to perform NLP and learn more about CNN's using my own dataset, and I keep running into an error regarding a shape mismatch:
...ANSWER
Answered 2021-Apr-07 at 13:16Your issue is here:
QUESTION
I have built a sequential model with a customized f1 score metric. I pass this during the compilation of my model and then save it in *.hdf5
format. Whenever I load the model for testing purposes using the custom_objects
attribute
model = load_model('app/model/test_model.hdf5', custom_objects={'f1':f1})
Keras throws the following error
...
ANSWER
Answered 2021-Feb-02 at 09:45After model.load()
if you compile your model again with the custom metric then it should work.
Therefore, after loading your model from disk using
QUESTION
I am currently learning classification using turicreate
and have a question regarding the word count vector
.
Using the example that I found here
...ANSWER
Answered 2021-Jan-31 at 19:29thanks for the direct question. I am here after I received your email. I think the two questions that you raised are somewhat similar and can be answered through each other. Basically, your question is why do we need word count vector while conducting sentiment analysis.
In all honesty, this is actually a long answer but I will try to make it as concise as possible. I am not aware of your level of NLP understanding at the moment but all machine learning models are only built for numerical values which means when you are working with text data, you first need to convert the text into a numerical format. This process is known as vectorization. That is essentially what we are doing here but there are many ways of achieving that. The vectorizer that is being used here is a CountVectorizer where each word in the counts dictionary is treated as a separate feature for that particular sentence. This leads to the creation of a sparse matrix which can represent m sentences with n unique words as a m x n
matrix.
The way we're going about it is that we count the number of times a word occurs a particular type of sentence (either positive or negative). It is understandable that words like terrible might have a very high count in negative sentences and almost 0 counts in positive sentences. Similarly, there will be a reverse effect for words like 'great' and 'amazing'. This is what is used in classifiers to allot weights to each word. Negative weights to words occurring popularly in negative classes and positive weights to words occurring in positive classes. This is what sentiment analysis classification is based on.
This might be a really helpful resource. You can also read through this.
PS: I wouldn't recommend using TuriCreate before you have either coded this from scratch to understand how it works or used scikit-learn because TuriCreate abstracts a lot of the usage and you might not understand what is happening in the background.
QUESTION
I am getting the following error :
AssertionError: text input must of type str (single example), List[str] (batch or single pretokenized example) or List[List[str]] (batch of pretokenized examples).
, when I run classifier(encoded)
. My text type is str
so I am not sure what I am doing wrong. Any help is very appreciated.
ANSWER
Answered 2021-Jan-25 at 10:02The pipeline already includes the encoder. Instead of
QUESTION
I am using the sentiment classifier in python according to this demo.
Is it possible to give pre-tokenized text as input to the predictor? I would like to be able to use my own custom tokenizer.
...ANSWER
Answered 2020-Dec-12 at 03:10There are two AllenNLP sentiment analysis models, and they are both tightly tied to their tokenizations. The GLoVe-based one needs tokens that correspond to the pre-trained GLoVe embeddings, and similarly the RoBERTa one needs tokens (word pieces) that correspond with its pretraining. It does not really make sense to use these models with a different tokenizer.
QUESTION
I'm following this tutorial that codes a sentiment analysis classifier using BERT with the huggingface library and I'm having a very odd behavior. When trying the BERT model with a sample text I get a string instead of the hidden state. This is the code I'm using:
...ANSWER
Answered 2020-Dec-04 at 04:03I faced the same issue while learning how to implement Bert. I noticed that using
QUESTION
My flask application works fine on my local server. When I try to deploy it on heroku it give the following error:
2020-11-12T13:22:11.503563+00:00 app[web.1]: OSError: SavedModel file does not exist at: /Users/leylamemiguven/Desktop/sentiment/twitter_sentiment_analysis.h5/{saved_model.pbtxt|saved_model.pb}
My keras model is saved as a .h5 file in the root directory of the project. The path is correct as I directly copied the path from vs code. I can't seem to figure out the issue because it works just fine when I run it with $ flask run
Here is the model. py file
ANSWER
Answered 2020-Nov-19 at 06:08Your file path looks like it's relative to your local PC
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