# Part 2 - Refining the model¶

In this second part of the tutorial you will:

• Learn how to change a disease model by adding in an extra “infectious but asymptomatic” stage to the lurgy.

• Learn how to perform parameter sweeps to investigate how disease parameters change the population trajectories during a model run.

• Understand random error by running a parameter sweep with many repeats.

• Learn how to run metawards on a HPC cluster

• Learn how to examine a hypothesis and conduct a large model run on a cluster to gather evidence.

• Learn how to change the underlying geographic model data