| dc.description.abstract | Sentiment analysis belongs to a branch in the field of natural language processing. The main purpose is to determine whether the feedback of the reviewer to the product or service is positive or negative emotion. Since the rise of social networking, more and more people are willing to share product experience or service experience on the platform, becoming a new reference for decision makers. Restaurants have also designed online questionnaires to collect customers′ dining satisfaction, thereby improving various shortcomings and increasing customer return rates. With the increase of reviews, it is difficult to browse the entire review by manual methods. Therefore, it is necessary to use computers to replace manpower to obtain valuable comment information. At present, most of the applications of sentiment analysis are document level which the sentiment polarity is predicted based on all the comments, ignoring that the comments may contain opinions and sentiments on multiple aspects.
In order to allow users to view the sentiment polarity of each aspect of view in the review and understand the advantages and disadvantages of the four aspects of the restaurant′s dining experience, this study uses aspect based sentiment analysis for restaurant reviews. First, use word embedding to convert the word of sentences and aspects into word vectors as the input source of computer calculation. Second, divide the aspect word into five categories: food, price, service, atmosphere and anecdotes. Third, use Attention-based LSTM with Aspect Embedding model judges the comment sentence as positive, negative or neutral emotion according to the given five categories label. The results show that the prediction accuracy of the model is as high as 84%. A restaurant review classification system can be built based on the results of aspect based sentiment analysis. The application data set can be divided into food, price, service, atmosphere and other four aspects and anecdotes. Reviews, based on the classification results of emotional polarity, found the restaurant’s customer satisfaction from different viewpoints. Emotional opinion analysis is used in restaurant reviews to classify the ever-increasing reviews, so that restaurant owners and customers can quickly find useful information. | en_US |