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== Functional Requirements ==

* Creation of (base) events
** Procedures/applications
** Declarative based on temporal data model
* Event operations (selection/fusion/enrichment)
** Selection 
** Projection
** Composition
** Enrichment	(complex) pattern recognition maybe based on regular expressions)
* Subscriptions and dissemination
** Event definition and selection
** Publisher/data source selection (fixed or attribute based)
** Consumer selection (fixed or attribute based)
*** Mutual filtering (yes/no) 
* Rich visualization (e.g., dashboards)
** Need more stuff?
* Advanced analytics
* Is this scenario distributed in nature? (Yes/no)
* This should be integrated with the event operations
** Have out-of-order events? (Yes/no)
** Uses historical analysis? (Yes/no)
** Size of moving windows (very big/big/small)
** Similarity search (i.e., find patterns that look like this pattern) (precision/recall?) 

== Operational requirements ==
* Throughput (Ultra High throughput/High throughput/Medium throughput)
* Response time (>10 sacs/>1 sec/sub-second)
* Enrichment performance
* Scalability (i.e., how big is the problem in terms of data size, queries/users). Record size
* Benefit from computational sharing (i.e., if there are many similar queries that can be processed more efficiently jointly by computing the common part than by treating each query separately)
* What is the complexity of the detection/pattern matching logic? (Very high/high/medium)
* Provides transactional guarantees?
* Privacy
* What is the relative cost of false positives and negatives? (High/low)
* What value-add does this solution provide? (End-user productivity/new types of applications)
* Amount of work to integrate EP with existing systems? (High /medium)
* Security
* Audit
* Tracking
* Ad-hoc querying and adaptively

== Product TOC Requirements ==
* Cost of SW/HW
* Education
* Development cost/ease (e.g., API available?)
* Deployment
* Maintenance/Migration
* Interoperability
* How good is the product scalability in terms of?
** Scale-up: increase the system and increase the load
** Speed-up: increase the system and maintain the load
** Load-up: maintain system but increase the load
* Types of communication allowed (push, pull, scheduled)?


== Domains ==
* Business
** Algorithmic Trading
** Business Activity Monitoring
** Retail Operations Automation
** Fraud Detection
* Sensor Driven
** Health Monitoring
** Military
** Ambient Intelligence
** Traffic Control
** Nature Monitoring (avalanche, forests, oceans, etc)
* New Apps
** Gaming (MMOG)
* IT
** Network Management
** System Diagnostics
* Big Science
** Particle Physics
** Radio Astronomy

Mamy more missing…