OrdRing 2015 - 4th International Workshop on Ordering and Reasoning (OrdRing 2015)

More and more applications require real-time processing of massive, dynamically generated, ordered data; where order is often an essential factor reflecting recency, proximity or relevance. Stream and rank-aware data management techniques are progressively providing reactive and reliable query answering over such massive datasets. Key to their success is the use of streaming algorithms that harness the natural or enforceable orders in the data. Semantic technologies can play a relevant role in this setting, exploiting their expressive power to integrate those highly dynamic sources. In the recent years, different work started to push order-related concepts in semantic technologies, such as Stream Reasoning and top-k ontological query answering. The workshop aims at bringing together this growing and very active community interested in integrating ordering with reasoning by using methods inspired by stream and rank-aware data management.