DSSM (Deep Structured Semantic Model) for Personalized Search is a deep learning approach that improves search results based on individual user preferences and behavior. It converts queries and documents into dense vector representations to understand semantic meaning instead of relying on exact keyword matches. This allows the system to deliver results that are more relevant to each user’s intent and past interactions. DSSM enhances ranking quality by learning personalized patterns from user activity data. It is widely used in search engines, recommendation systems, and AI-driven platforms. The model continuously adapts to user behavior to improve search accuracy over time. It also helps deliver more context-aware and user-specific results.