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A 24 page quick start guide for RooFit version 3.

## ROOT Tutorials: RooFit tutorials

It is also possible to organize them in a container class 'the workspace' that has an associated factory tool to create trees of RooFit objects of arbitrary complexity roofig a simple construction language. Int M x,y dy overlaid on the x distribution of the data.

The previous examples illustrated various techniques to construct probability density functions in Roofkt. To request parallel calculation on 8 processors on the same hostconstruct the likelihood function as follows.

This parallelization process is transparent to the user. The natural modeling language for such distributions are probability density functions F x;p that describe the probability density the rkofit of observables x in terms of function in parameter p.

The likelihood function behaves like a regular RooFit function and can be plotted the same way probability density functions can. Class Documentation The detailed documentation of all class methods and data members is available for the core classes and the pdf classes.

The likelihood function behaves like goofit regular RooFit function and can be plotted the same way probability density functions can. The example below shows how to construct a 2-dimensional p. The detailed documentation of all class methods and data members is available for the core classes and the pdf classes. The picture below shows a 2-D visualization of the M x,y and the projection on the x observable i.

Fitting, plotting and event generation with multi-dimensional p. The picture below shows a 2-D visualization of the M x,y and the projection on the x observable i. Purpose The RooFit library provides a toolkit for modeling the expected distribution of events in a physics analysis. The software is primarily designed as a particle physics data analysis tool, but its general nature and open architecture make it useful for other types of data analysis also.

This parallelization process is transparent to the user. Another update that includes all new features added in version 3.

### RooFit tutorials

The complete doofit below construct a toy p. To request parallel calculation on 8 processors on the same hostconstruct the likelihood function as follows. It is also possible to construct convolutions of p. The complete example below construct a toy p. The example below shows how to construct a 2-dimensional p. In the example above, all indivual components of the RooFit p.

In the example above, all indivual components of the RooFit p. Please refer to this page for more documentation.

## RooFit manual

The RooFit library provides a toolkit for modeling the expected distribution of events in a physics rootit. A profile likelihood is construct as follows. The RooFit library provides a toolkit for modeling the expected roofjt of events in a physics analysis.

The defining properties of probability density functions, unit normalization with respect to all observables and positive definiteness, also provide important benefits for the design of a structured modeling language: Int M x,y dy overlaid on the x distribution of the data Example of working with likelihood functions and profile likelihood The previous examples illustrated various techniques to construct probability density functions in RooFit.

It is also possible to organize them in a container class 'the workspace' that has an associated factory tool to create trees of RooFit objects of arbitrary complexity from a simple construction language.

You are here Home. Similarly, model building operations such as addition, multiplication, integration are represented by separate operator objects and make the modeling language scale well to models of arbitrary complexity. Example of a multi-dimensional p.

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