Big Data mining Challenges(2) O Big data semantics and application Knowledge aData sharing and privacy ◇、丶 ow data are maintained, accessed, and shared Domain and application knowledge What are the underlying applications What are the knowledge or patterns users intend to discover from the data 24Big Data Mining Challenges (2) ⚫Big Data Semantics and Application Knowledge Data sharing and privacy • How data are maintained, accessed, and shared Domain and application knowledge • What are the underlying applications ? • What are the knowledge or patterns users intend to discover from the data ? 24