Subjective Knowledge Acquisition and Enrichment Powered By Crowdsourcing

Understand

Knowledge bases (KBs) have attracted increasing attention due to its great success in various areas, such as Web and mobile search.Existing KBs are restricted to objective factual knowledge, such as city population or fruit shape, whereas,subjective knowledge, such as big city, which is commonly mentioned in Web and mobile queries, has been neglected.

• Subjective knowledge differs from objective knowledge in that it has no documented or observed ground truth.
• Instead, the truth relies on people's dominant opinion.
• Thus, we can use the crowdsourcing technique to get opinion from the crowd.