I only need the sentimental score for 40 words , so I need a ready tool (like this https://www.twinword.com/api/sentiment-analysis.php) or a library that I can embed in my code.
But I need to make sure the tool I use is accurate enough with an evidence/reference.
if you just need a tool to give scores for 40 words, SentiWordNet is a library in python and its give accurate scores . Also , you can use VADER , another python library (exactly called lexicon) for sentiment analysis.
Dear @Eiman Kanjo . It depends on your context and what you intend to do. I once read a review that says that the confidence of feeling analysis in text is on average around 72%. However, it depends a lot on your data and how you preprocess it. In terms of polarity, I really like the VADER algorithm for English.