Sentiment analysis, also called opinion mining, is a typical application of Natural Language Processing (NLP) widely used to analyze a given sentence or statement's overall effect and underlying sentiment. A sentiment analysis model classifies the text into positive or negative (and sometimes neutral) sentiments in its most basic form. Therefore naturally, the most successful approaches are using supervised models that need a fair amount of labelled data to be trained. Providing such data is an expensive and time-consuming process that is not possible or readily accessible in many cases. Additionally, the output of such models is a number implying how similar the text is to the positive examples we provided during the training and does not consider nuances such as sentiment complexity of the text.

In today's digital world businesses need to make sense of online reviews and analyze what customers are trying to tell them. They can do this using AI-powered text analytics and sentiment analysis. One of the basic lessons that all companies should follow is that success lies in the hands of their customers. Understanding how those customers feel about your product or service is essential to financial survival and prosperity. In this blog, we understand the process of sentiment analysis on reviews and how it can help businesses improve their products and services.

You're likely familiar with the saying, "Texting is a brilliant way to miscommunicate how you feel and misinterpret what other people mean." You've probably even experienced it directly! Substitute "texting" with "email" or "online reviews" and you've struck the nerve of businesses worldwide. Gaining a proper understanding of what clients and consumers have to say about your product or service or, more importantly, how they feel about your brand, is a universal struggle for businesses everywhere. What if I told you it doesn't have to be this way?

We’ve carefully curated and summarized the most interesting research papers introducing meaningful, engaging, and persona-consistent chatbots.

This posts describes, along with Python code, an analysis of the readers' comments open dataset from Rome's libraries made publicly available by "Istituzione Biblioteche di Roma"¹. The analysis leverages topic modeling techniques to find recurring topics among readers' comments, and thus determine, by inference, the themes of the borrowed books and the interests of the readers. Moreover, sentiment analysis is performed to determine whether customers comments are positive or negative. Finally, readers data (age and occupation) are used to achieve customers segmentation via clustering techniques. This provides insights on the topics of borrowed books, the readers sentiment and different readers clusters.

Sentiment analysis is a methodology for analysing text data and classifying the sentiment contained within it. It is a useful technique for every customer facing industry (retail, finance, telco, utilities, etc) which needs to understand how consumers are thinking about them and their products, features and services. Sentiment analysis is a key feature in understanding and predicting churn, developing more accurate customer segmentations and creating recommender systems which have a good take-up of product and service offerings. Today, organisations have access to vast amounts of digital data from multiple platforms, including social media, review platforms, chatbots and influencer marketing campaigns, as well as internal CRM and Enterprise Marketing Systems. This heterogeneous data environment means that multiple types of sentiment model may be needed to truly understand customers, with different models used for understanding emotions, opinions, future intent or what aspects of a product or service are liked or disliked.

Sentiment analysis of free-text documents is a common task in the field of text mining. In sentiment analysis predefined sentiment labels, such as "positive" or "negative" are assigned to texts. Texts (here called documents) can be reviews about products or movies, articles, tweets, etc. In this article, we show you how to assign predefined sentiment labels to documents, using the KNIME Text Processing extension in combination with traditional KNIME learner and predictor nodes. A set of 2000 documents has been sampled from the training set of the Large Movie Review Dataset v1.0.

Rep. Elise Stefanik, R-NY, reacts to the former CNN anchor being fired over his role in former Gov. Andrew Cuomo's sexual harassment scandal. White House chief of staff Ronald Klain confused readers Sunday as he promoted a Washington Post op-ed that argued President Biden gets worse media treatment than his predecessor, former President Trump, whose verbal duels with the press were weekly staples during his four-year residency at 1600 Penn. "For your consideration," Klain tweeted with a link to the op-ed from Dana Millbank, titled, "The media treats Biden as badly as - or worse than - Trump. WHITE HOUSE'S RON KLAIN PANNED FOR RETWEETING POST ON'ULTIMATE WORK AROUND' FOR FEDERAL VACCINE MANDATE Millbank's "proof" was research from Forge.ai, a data analytics unit of the information company FiscalNote. The study used algorithms focused on adjectives and their placement in articles - more than 200,000 of them - to rate the coverage Biden received in the first 11 months of 2021 and the coverage Trump got in the first 11 months of 2020. The process was referred to as "sentiment analysis." "My colleagues in the media are serving as accessories to the murder of democracy," Millbank said. "Too many journalists are caught in a mindless neutrality between democracy and its saboteurs, between fact and fiction.

In this article, we are going to compare the sentiment extraction performance between Sentiment Analysis engines and Custom Text classification engines. The idea is to show pros and cons of these two types of engines on a concrete dataset. Sentiment analysis (or opinion mining) is a natural language processing technique used to determine whether data is positive, negative or neutral. Sentiment analysis is often performed on textual data to help businesses monitor brand and product sentiment in customer feedback, and understand customer needs. Text classification is a machine learning technique that assigns a set of predefined categories to a dataset of texts.

Background: COVID-19 is one of the greatest threats to human beings in terms of health care, economy, and society in recent history. Up to this moment, there have been no signs of remission, and there is no proven effective cure. Vaccination is the primary biomedical preventive measure against the novel coronavirus. However, public bias or sentiments, as reflected on social media, may have a significant impact on the progression toward achieving herd immunity. Objective: This study aimed to use machine learning methods to extract topics and sentiments relating to COVID-19 vaccination on Twitter. Methods: We collected 31,100 English tweets containing COVID-19 vaccine–related keywords between January and October 2020 from Australian Twitter users. Specifically, we analyzed tweets by visualizing high-frequency word clouds and correlations between word tokens. We built a latent Dirichlet allocation (LDA) topic model to identify commonly discussed topics in a large sample of tweets. We also performed sentiment analysis to understand the overall sentiments and emotions related to COVID-19 vaccination in Australia. Results: Our analysis identified 3 LDA topics: (1) attitudes toward COVID-19 and its vaccination, (2) advocating infection control measures against COVID-19, and (3) misconceptions and complaints about COVID-19 control. Nearly two-thirds of the sentiments of all tweets expressed a positive public opinion about the COVID-19 vaccine; around one-third were negative. Among the 8 basic emotions, trust and anticipation were the two prominent positive emotions observed in the tweets, while fear was the top negative emotion. Conclusions: Our findings indicate that some Twitter users in Australia supported infection control measures against COVID-19 and refuted misinformation. However, those who underestimated the risks and severity of COVID-19 may have rationalized their position on COVID-19 vaccination with conspiracy theories. We also noticed that the level of positive sentiment among the public may not be sufficient to increase vaccination coverage to a level high enough to achieve vaccination-induced herd immunity. Governments should explore public opinion and sentiments toward COVID-19 and COVID-19 vaccination, and implement an effective vaccination promotion scheme in addition to supporting the development and clinical administration of COVID-19 vaccines.