Book sales in Spain have fallen progressively, which requires urgent changes to optimize the sales process as much as possible. This research proposes a new system, called Base of Reasoning in Artificial Intelligence with Natural Language (BRAIN L) focused exclusively on the publishing industry. The new field of knowledge of Artificial Intelligence (AI), Natural Language Processing (NLP), tecnolog\'ia del Machine Learning is combined with Case-Based Reasoning (CBR) techniques for book recommendations. A model is developed to retrieve similar cases/books supported by NLP techniques for decision making. In addition, policies are implemented to keep the model evaluated by expert reviews, where the system not only learns with new cases, but these cases are real.

翻译：西班牙的图书销量持续下滑，亟需采取措施优化销售流程。本研究提出了一种新系统，名为"基于自然语言的人工智能推理系统"（BRAIN L），专为出版行业设计。该系统融合了人工智能（AI）、自然语言处理（NLP）与机器学习技术的新兴领域知识，并结合基于案例的推理（CBR）技术进行图书推荐。通过开发一个由NLP技术支持决策的模型，可检索相似案例/图书。此外，系统实施了专家评审机制以保持模型评估的持续性，不仅通过新案例实现学习，且所采纳的案例均为真实数据。