Anomaly Detection on Natural Language Processing to Improve Predictions on Tourist Preferences

Abstract

Argumentation-based dialogue models have shown to be appropriate for decision contexts in which it is intended to overcome the lack of interaction between decision-makers, either because they are dispersed, they are too many, or they are simply not even known. However, to support decision processes with argumentation-based dialogue models, it is necessary to have knowledge of certain aspects that are specific to each decision-maker, such as preferences, interests, and limitations, among others. Failure to obtain this knowledge could ruin the model’s success. In this work, we sought to facilitate the information acquisition process by studying strategies to automatically predict the tourists’ preferences (ratings) in relation to points of interest based on their reviews. We explored different Machine Learning methods to predict users’ ratings. We used Natural Language Processing strategies to predict whether a review is positive or negative and the rating assigned by users on a scale of 1 to 5. We then applied supervised methods such as Logistic Regression, Random Forest, Decision Trees, K-Nearest Neighbors, and Recurrent Neural Networks to determine whether a tourist likes/dislikes a given point of interest. We also used a distinctive approach in this field through unsupervised techniques for anomaly detection problems. The goal was to improve the supervised model in identifying only those tourists who truly like or dislike a particular point of interest, in which the main objective is not to identify everyone, but fundamentally not to fail those who are identified in those conditions. The experiments carried out showed that the developed models could predict with high accuracy whether a review is positive or negative but have some difficulty in accurately predicting the rating assigned by users. Unsupervised method Local Outlier Factor improved the results, reducing Logistic Regression false positives with an associated cost of increasing false negatives.

Advances in Explainable Artificial Intelligence and Edge Computing Applications

“…Prediction and decision-making models are also commonly used within AI and XAI models [5][6][7][8]. These models can be applied to different areas, such as tourist preferences, as proposed by Meira et al [6], that explore Machine Learning to predict users' ratings.…”

“…Prediction and decision-making models are also commonly used within AI and XAI models [5][6][7][8]. These models can be applied to different areas, such as tourist preferences, as proposed by Meira et al [6], that explore Machine Learning to predict users' ratings. Concretely, the authors used Natural Language Processing strategies and Machine Learning methods to identify the tourists who truly like or dislike a particular point of interest.…”

Estudio Longitudinal de la estacionalidad turísticas en España usando Redes Neuronales

“…En este sentido, sorprende un tanto la poca atención que la literatura ha dedicado precisamente al enfoque placentero, ya que pocas veces se mide la estacionalidad y sus implicaciones en función de las medidas y posibilidades [26,32,[37][38][39]. En España, por ejemplo, con los trabajos de [14,17,18,37,40,43,44] En todo caso, implican la mayor parte de las estacionalidades regladas año a año en todas las comunidades, a falta de datos rigurosos y suficientemente completos sobre la demanda en el formato de alojamiento residencial.…”