- #ORF09 An introduction to the RETE algorithm
- #ORF09 Playing With the Rules Presentation
- #ORF09 Rule Patterns and Features Presentation
- #ORF09 Early Alert System Presentation
- #ORF09 Engineer’s perspective on Rule Technology Keynote
- #ORF09 Enterprise Architecture Presentation
- #ORF09 Enterprise Architecture Presentation Part II
- #ORF09 Model Driven Approach for BRMS Presentation
- #ORF09 Production Rule Systems
- #ORF09 Graph Based Knowledge Bases and Rules Presentation
- #ORF09 Truth versus Useful Lies Presentation
- #ORF09 Automated Verification of rules Presentation
- #ORF09 Agile Business Rule Development Presentation
- #ORF09 Rule Classification First Presentation
- #ORF09 Rule Violation and Over-Constrained Problems Presentation
- #ORF09 Generating Rules from UML presentation
- #ORF09 What’s Different about Rules in CEP Presentation
- #ORF09 Measuring your Rules’ KPI Presentation
- #ORF09 Designing a System of Rule Based Agents Presentation
- #ORF09 Extending General Purpose Engines Presentation
- #ORF09 Programming Rules using a spreadsheet interface
- #ORF09 Practical and Modern RBE Presentation
- #ORF09 Temporal Reasoning Presentation
- #ORF09 Business Rules in the Cloud Presentation
- #ORF09 October Rules Fest Think Tank
- #ORF09 October Rules Fest Think Tank – Part II
- #ORF09 CLIPS implementation of RETE Presentation
- #ORF09 Complex Event Processing Models Presentation
- #ORF09 Distributed Programming with Agents Presentation
- #ORF09 making Parallelism Available to Rule Developers Presentation
Edson Tirelli and Adam Mollenkopf are presenting on CEP. Temporal reasoning is only one of the components of CEP.
CEP is about processing a large amount of events and identifying the meaningful events out of the event cloud. CEP uses techniques such as detection of complex patterns, etc.
Fedex Custom Critical (high value, special needs) needed to create dynamic schedules to support special needs of the customers. They get information from the vehicles, shipment information, aircraft events, traffic flow, traffic incidents, etc.
Very interesting demo showing how they use all of the information is combined and displayed with a GIS system and it allows tracking of trucks and shipments to make sure deliveries are done on time and within the requirements that the customer had asked for.
Adam then covered the architecture of the system and then elaborated on the expected benefits of doing all of this.
Edson then took over the presentation to explain how Drools Fusion supports CEP. Temporal reasoning requires:
- A CEP enabled engine (time and events)
- Ability to express temporal relationships
- Requires a reference clock
- Requires support of temporal dimension
They have implemented the 13 temporal operators that Allen (missed the full name) identified in a research paper. Basically: before, meets, overlaps, finishes, includes, starts, coincides, after, metBy, overlappedBy, etc.
The reference clock defines the evolution of time and is required to synchronize time sensitive operations. They allow for clocks to be defined specifically for the domain the rules are working for.
Edson then went through some of the details of how things work behind the scene (temporal distance algorithm) and showed example rules.
Very interesting stuff. I found it very interesting to see a very practical example of how CEP can be used and I am impressed with how evolved Drools has become in such a short time working in that space.
Tags: Business Rules, Conferences, ORF09