With only a few years, the rapid developing Web has led to revolutionary changes in the whole human society. The Semantic Web is the next generation of the Web. It provides a common framework that allows data to be shared and reused across applications, enterprises, and community boundaries. Semantic Web technology facilitates building a large-scale Web of machine-readable knowledge that allows for data reuse and integration. Nowadays, many scholars and experts are devoting them to the work of applying the Semantic Web theories into specific practice, while in turn improving the Semantic Web theories and techniques according to the demand in practice. Web Science involves the full scope of Web-related applications, integrating all directions of Web-related interdisciplinary research into a new field. This joint conference aims to promote expansions from the Semantic Web to Web Science, and to discuss the core technology on the Next Generation Web, including swarm intelligence, semantic search, Web security, natural language processing (NLP) etc.