## Model[Data]

**is an abstract direct subtype of Type**

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with direct subtypes Model subtypes

#### TYPE INCLUSION RELATIONSHIPS

This type represents what is commonly understood as "Modelling Assumptions".

It is an abstract Deriscope Type, which means that its objects will have one of the several subtypes that are implemented in Deriscope

This type serves to hold everything that can be seen as "subjective", i.e. information that can be potentially disputed.

For example, an assumed linear interpolation of zero rates or the gaussian dynamics of some stock price.

**objects are often - but not always - needed as input in the pricing of Tradable and the valuation of Quotable objects.**

*Model*In the Deriscope framework, every possible non-Model Deriscope Type is allowed to have a corresponding

*Model*For example, the non-Model

**Vanilla Option is accompanied by the**

*Deriscope Type***Model[Vanilla Option]**

*Deriscope Type*Deriscope discourages the creation of Model types that do not directly correspond to some specific non-Model type.