## Bayesian Doctor - for Bayesian Network and Bayesian Inference.

### Rich visual modeling using the Bayesian Network Software

Bayesian Doctor is a tool for analyzing Bayesian Network and Bayesian Inference using a directed graphical model. Create a Bayesian network in a very intuitive way, and diagnoses the Root cause.

### Instantiate Observation

When you observe a state of a variable, instantiate the state of the Variable. For example, we observed that Grass is Wet, so we instantiated the Grass Variable = True. Based on the Observation, the Probability of Rain = True is updated.

### Multi-State Variables

Not only just Yes/No or True/False type boolean states, rather a variable can have more than 2 states. The Conditional Probability tables are easy to use and scaling of probabilities is easily done.

### Apply Bayesian Inference to update beliefs upon observations from experiments.

When you have many random variables to work with, a Bayesian Network Conditional Probability Table can be very complicated and becomes fairly impractical in real life diagnostics. Therefore, you need to incorporate one observation at a time and update the beliefs accordingly. Here, the diachronic interpretation comes into play.

“Diachronic” means that something is happening over time; When we receive new data (new observation), the probability of our hypotheses changes. Diachronic Interpretation is a systematic way to update our beliefs as we get new data. In a lab-like setting, you can add as many mutually exclusive and non-exclusive hypotheses, add as many experiments and observations you want, and run a causal discovery session to find out the probability of your hypotheses. Diachronic interpretation tools can be used for various diagnostics from healthcare to daily problems.

### Diagnose complicated diseases based on symptoms arrive

An example of understanding the cause of Nausea / Vomiting. Initial Hypotheses were Peptic Ulcer and Viral Gastroenteritis. The diachronic interpretation can be used to update the belief on Peptic Ulcer and Viral Gastroenteritis based on symptoms.

### A Part of our Rational Will software.

This Bayesian Network Software (a.k.a. Bayesian Doctor) is also available in our composite (bundled) product Rational Will®, where you get a streamlined user experience of many decision modeling tools. Therefore, if you get Rational WIll, you won't need to acquire this software separately.