<b>Minimal derivative dataset for REI–RPI framework (Amazon Books Reviews)</b>

This file contains the minimal derivative dataset required to reproduce the REI and RPI indices presented in the manuscript "A Two-Dimensional Framework for Profiling Online Reviewer Behaviour".The dataset includes cleaned observations and reviewers with at least three ratings. <b>To comply with PLOS ONE data privacy policies, the dataset has been fully anonymized: all usernames and personally identifiable information (PII) have been removed.</b>Only the variables strictly necessary for computing the REI and RPI measures are provided (<b>Anonymized User_id</b>, Id (book Id), Title, review/score).The raw Amazon Book Reviews dataset is not included, as it originates from an external public repository (Kaggle – Mohamed Bakhet, 2022) and is not owned by the authors. Users wishing to access the full raw dataset may obtain it directly from the original source:https://www.kaggle.com/datasets/mohamedbakhet/amazon-books-reviews/dataThis derivative dataset is released for the purpose of ensuring reproducibility in compliance with PLOS ONE data policies.