- From: Tara Athan <taraathan@gmail.com>
- Date: Fri, 18 Dec 2015 17:04:21 -0500
- To: public-rsp@w3.org
Per request, I have opened a pull request https://github.com/streamreasoning/RSP-QL/pull/21 https://github.com/greenTara/RSP-QL/commit/b173ed2e42f50d8eef26c0b31d421fe8e0504191 adding an explicit example, corresponding to the usecase of a syntactic merger of three streams of temperature data at particular locations to create one stream. The original streams are in the form where the name of the graph is an IRI, and the graph is not included explicitly in the stream. The merged stream simply combines the stream elements of the original streams, without change. The observation times coincide, and so a sequence ordering of the timestamp triples cannot be uniquely determined. If merger required creating a new timestamped graph combining all observations at a given time, then this would require dereferencing the graph names, followed by transmission of a new timestamped graph containing the merger of those dereferenced graphs, and I don't think this would be an acceptable alternative. The problem I see is that the result of applying a count-based window function to this merged stream would not be deterministic, unless we count times rather than timestamped graphs. Tara
Received on Friday, 18 December 2015 22:04:51 UTC