AI-driven hybrid recommender model for personalized residential property selection in chennai based on flood risk, sustainability, and proximity

The real estate sector in Chennai is going through a dramatic change and home-buyers are looking for homes that embody their notions of safety, sustainability and access to services. However, traditional property search engines are unable to take into account all factors affecting the selection of properties, including flood and sustainability risk. The paper will be discussing a hybrid recommender system with the help of collaborative filtering, content-based filtering algorithms, ranking algorithms, reinforcement learning (RL) with the help of a Proximal Policy Optimization (PPO) algorithm. The input of the user in the organization is achieved by a standardized questionnaire, and real-time property data is used to provide customized property suggestions that are customized to the users’ needs dynamically. Some of the main challenges, including risk of flooding, sustainability and amenity and location factors, are being incorporated into the recommendations, adding context sensitivity and responsiveness to the environmental challenges. Data from 500 participants and 200 properties were used to validate the system. The system achieved 99.92% precision, 99.96% recall, 99.85% F1-score, and 85.2% NDCG@10. PPO enabled the model to dynamically adjust the collaborative filtering weight between 0.41 and 0.50 across 200 epochs based on user preferences. The results validate the proposed recommender system for dynamically suggesting available properties with customized recommendation and its flexibility and scalability compared to the traditional recommender systems. The research will pave the way towards improved property selection in flood-prone urban environment with climate consciousness and can be applied in other cities suffering from similar issues.