Lifelong-RL: Lifelong Relaxation Labeling for Separating Entities and Aspects in Opinion TargetsIt is well-known that opinions have targets. Extracting such targets is an important problem of opinion mining because without knowing the target of an opinion, the opinion is of limited use. So far many algorithms have been proposed to extract opinion targets. However, an opinion target can be an entity or an aspect part or attribute of an entity. An opinion about an entity is an opinion about the entity as a whole, while an opinion about an aspect is just an opinion about that specific attribute or aspect of an entity. Thus, opinion targets should be separated into entities and aspects before use because they represent very different things about opinions.
The State of Sentiment Analysis -- Prof Bing Liu
Sentiment Analysis and Opinion Mining
Sentiment analysis is the automated process that uses machine learning for identifying subjective information from text. Companies use sentiment analysis for analyzing data such as tweets, survey responses and product reviews, getting key insights and making data-driven decisions. In a world where we generate 2. What are the different approaches? What are its caveats and limitations?
Tahura Shaikh and Deepa Deshpande. Full text available. Opinion Mining or Sentiment Analysis is a field of data mining. Opinion Mining is a form of Natural Language Processing which is used to record the attitude of people towards a particular subject or product. Mainly Opinion Mining classifies the given review as positive, neutral or negative. Recently Opinion Mining has accomplished much focus due to availability of vast amount of opinion rich web resources in digital form such as discussion forums, review sites, blogs etc. As the use of e-commerce websites is increasing profusely, users not only buy a product on websites but also give their feedback and suggestions that will be beneficial to other users.
Sentiment analysis can be seen as a text categorization task i. It consists of detection of the topic which can be easy in focused reviews and detection of the sentiment which is generally difficult. Opinions are sometimes expressed in a very subtle manner e. The sentiments are usually simply classified by their polarity positive, negative but they can be recognized more in depth e. Recognized opinions are also subject to summarization e.
With the rapid growth of social media, sentiment analysis, also called opinion mining, has become one of the most active research areas in natural language processing.
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