Classification is a kind of basic semantics that people often use to manage versatile contents in daily life. Resource Space Model (RSM) is a semantic model for sharing and managing various resources using normalized classification semantics. Gossip-based peer-to-peer (P2P) techniques are reliable and scalable protocols for information dissemination. Incorporating RSM with gossip-based techniques forms a new decentralized resource sharing mechanism with the improved performance of unstructured P2P systems. Theoretical analysis and experiments validate the feasibility of the mechanism. Such incorporation is a way to synergy normalization and autonomy in managing decentralized large-scale complex resources.