Introduction and important terms



In this section an overview is given of the KPI Manager of the platform. The tasks of the KPI Manager within the platform are the following: 

  • Create, edit and delete KPI templates 
  • Setting permissions editing KPI templates for users 
  • View and filter all KPI templates 
  • Setting details for virtual data points  
  • Query and computation of nodes 
  • Implementation of predefined basic computation 
  • Implementation of self-written computations as data scientist 
  • Provides an API to implement new computation  
  • Notifications when job-evaluations are crashing 
  • Migrate Job Queue from Rabbit MQ to Redis Streams 

You can access the Alarm Manager within the platform as follows: 

Important terms


A KPI (Key Performance Indicator) is computed from time series (e. g. measured values) and other KPIs based on a KPI template. 

KPI Template

KPIs are computed based on a KPI template. A KPI template has exactly one KPI graph. It also has one or more filters to select resources. The first filter of the KPI template is supposed to have a group-by expression that yields the resources (e. g. ventilation plants) for which the KPI template should be computable. In order to create a KPI template for a pre-determined fixed set of resources, the result set of this filter can optionally be saved, so that the filter is not re-evaluated at runtime (compare to Dashboard Template). 

KPI Context

KPI context is a term that helps to think about the computation of a KPI template within the context of a resource, typically a container (e. g. a ventilation plant). Here, such a resource is one of the grouping resources obtained via the group-by expression of the main filter of the KPI template. 

KPI Graph

A KPI graph is composed of one or more source elements, zero or more function elements, and one or more sink elements. 

Source Element

A source of time series in a KPI graph. Its outlet is typically connected to an inlet of a function element. Each source element has a filter to select a data source. That filter is evaluated against the union of the result sets of the filters of the KPI template (compare to Widget). 

Function Element

A pre-configured function in a KPI graph that transforms data coming in at its inlets and yields result data at its outlet(s). 

Sink Element

A sink in a KPI graph. Represents a virtual time series computed by the KPI graph. It has one inlet. The sink will not transform the data, it will just be written to a storage.

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