Discussion (Chapter 7): What are the common challenges with which sentiment analysis deals? What are the most popular application areas for sentiment analysis? Why?
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Discussion (Chapter 7): What are the common challenges with which sentiment analysis deals? What are the most popular application areas for sentiment analysis? Why?
Introduction
In this section, we will discuss some common challenges that the sentiment analysis faces. We will see them through the lens of how they can be tackled by machine learning algorithms.
Challenge 1: Words with multiple meanings
The first challenge is words with multiple meanings. For example, the word “great” could be used in two ways: as a positive affirmation (as in “It was such a great day”) or as an ironic statement (as in “You’re so great”). In some cases, this difference may not be obvious to humans; however, it can be very difficult for computers to distinguish between these two meanings when analyzing text.
In order for sentiment analysis algorithms to work effectively on these types of datasets, we need to find a way to distinguish between them so that our models can make intelligent decisions about what words should be considered positive or negative based on their context.
For example: let’s say you’re looking at an article about how great it was yesterday during college orientation week at your university—and then suddenly you see one sentence that reads something like “I like my roommate but I think he has bad taste in music.” What do you think? Is this sentence referring solely towards his taste in music or also towards other things related specifically towards him as well? If someone else wrote this same sentence but with different wording (“I don’t like my roommate’s taste”), would there still be enough information conveyed within those few words for us humans reading over topologists’ shoulders understand whether they meant good things about their relationship later down line?”
As shown in the previous practice of a sentimental analysis for restaurant review, the word “great” could mean opposite sentiments. The word “nice” could be also said in two ways, “not nice” and “really nice”.
As shown in the previous practice of a sentimental analysis for restaurant review, the word “great” could mean opposite sentiments. The word “nice” could be also said in two ways, “not nice” and “really nice”. A similar situation occurs with negative words like bad, awful and terrible.
This problem is known as the ambiguity of content analysis and it can be solved by creating categories that represent different levels of semantic meaning within an utterance or sentence (Wepmann et al., 2001; Roberts & Tummons-Vandivert 2009).
This is one of the challenges we deal with. We must find a way to distinguish which word is used in what way. For example, knowing that a review is written by a college student, we could know that they are likely to use “nice” as “really nice”. Another example would be using the context of the entire sentence, using a grammar-based approach.
Sentiment analysis is a technique used to analyze text and extract the sentiments of each word. Sentimental words are often used in reviews, but can also be found in other forms of writing. In this chapter, we will discuss some of the challenges that arise when using sentiment analysis on natural language data sets.
Conclusion
Sentiment analysis is a challenging task. Sentiment analysis has become an important part of our daily life, and one day, we may not even notice it. The reason is because the technology behind sentiment analysis is so advanced that most of us can’t even imagine what it would be like if we were to lose our ability to read emotions in text! So it’s important that we stay up-to-date on how this technology works today—and what challenges lie ahead tomorrow—so we can continue providing useful services for those who need them most.
USEFUL NOTES FOR:
Discussion (Chapter 7): What are the common challenges with which sentiment analysis deals? What are the most popular application areas for sentiment analysis? Why?
Introduction
Sentiment analysis is a field that deals with understanding human sentiments, emotions and attitude towards products. Sentiment analysis is usually used to understand how customers are feeling about various aspects of their lives, e.g. their satisfaction with their jobs or brands they have purchased in the past.
In this chapter we covered some of the biggest obstacles that sentiment analysis has to deal with and how they are currently being solved.
Sentiment analysis faces a lot of challenges in its task to understand, classify and react to human emotion. In this chapter we covered some of the biggest obstacles that sentiment analysis has to deal with and how they are currently being solved.
Sentiment analysis faces a lot of challenges in its task to understand, classify and react to human emotion. In this chapter we covered some of the biggest obstacles that sentiment analysis has to deal with and how they are currently being solved.
The task of sentiment analysis is very complex and requires a lot of processing power.
Sentiment analysis is a task that requires understanding, classification and reaction to human emotion.
Lexical ambiguity is the challenge that words can have different interpretations based on the context they are used in. For example, a happy customer in the delivery industry will be thrilled that their package arrived on time whereas an unhappy customer might be disappointed that it came early and there was no one home. Here we covered lexical resources like WordNet, which has semantic relationships between synsets (groups of synonyms) to help overcome this problem. We also talked about how some classifiers use negation words like “not” or “but” to flip the polarity of a sentence from positive to negative or from negative to positive, respectively.
Lexical ambiguity is the challenge that words can have different interpretations based on the context they are used in. For example, a happy customer in the delivery industry will be thrilled that their package arrived on time whereas an unhappy customer might be disappointed that it came early and there was no one home. Here we covered lexical resources like Wordnet, which has semantic relationships between synsets (groups of synonyms) to help overcome this problem. We also talked about how some classifiers use negation words like “not” or “but” to flip the polarity of a sentence from positive to negative or from negative to positive, respectively
Classifiers: A classifier is an algorithm that recognizes patterns in text by applying rules such as TF-IDF or word2vec models; these models are trained using large amounts of training data
Conclusion
Sentiment analysis is a very important skill for us to master as it will help us understand our customers better and make them happier.