====ARDI ModelHost====

**ModelHost** is a small Python library that allows you to create and host models of your system(s) that can be run, modified and tested on-the-fly.

In this context, a //model// is a system that takes one or more input values, and produces one or more output values - they often calculate the physical limits on machines or perform analytics and classification on your data.

ModelHost helps deploy these models, allowing you to...

   * Easily connect models to online, live data.
   * Connect models to one-another, feeding the inputs of one model with the outputs of another.
   * Avoid server load and violating license limits by hosing multiple models in a single application,
   * Answer complex questions using optimisation algorithms and goal-seeking,
   * Avoid server load by only updating values when changes occur,
   * Distribute your output data

The  [[mos:Welcome|Modular Output System]] allows you to push your data to your choice of systems - from log files to full OPC-UA servers.

ModelHost also includes a framework for building math-based models. It allows much more complex equations than what is available using the ARDI Calculation driver - you can include custom logic, perform experiments on your models and perform tasks that are difficult or impossible to perform in historians or PLCs, such as [[goalseek|goal seeking]].

[[Structure of a MathModel|Discover the structure of a Hosted Model]].