Changes for page Extension tvb-ext-xircuits
Last modified by teodoramisan on 2026/02/13 10:11
From version 76.1
edited by teodoramisan
on 2026/02/13 09:24
on 2026/02/13 09:24
Change comment:
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To version 81.1
edited by teodoramisan
on 2026/02/13 10:11
on 2026/02/13 10:11
Change comment:
There is no comment for this version
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... ... @@ -157,9 +157,9 @@ 157 157 [[image:timeseries-plotly.png||alt="view3.png" height="593" width="1100"]] 158 158 159 159 160 -=== 3. Visualize posterior pairplot resultedfromaninferenceworkflow===160 +=== 3. Visualize posterior samples with a pairplot (VBI inferenece) === 161 161 162 -This functionality is available for the SamplePosterior component. Right click on the component and select the Open Viewer functionality. 162 +This functionality is available for the **SamplePosterior** component. Right click on the component and select the **Open Viewer** functionality. 163 163 164 164 This opens a new JupyterLab tab with an editable notebook. After following the instructions in the notebook, you will generate a pairplot of the posterior samples, showing the distribution of each parameter (uncertainty) and the relationships between parameters. 165 165 ... ... @@ -168,9 +168,9 @@ 168 168 [[image:plot-posteriors.png||height="593" width="1100"]] 169 169 170 170 171 -=== 4. Visualize time series resultedfrom VBI simulations ===171 +=== 4. Visualize time series from VBI simulations === 172 172 173 -This functionality is available for the SimulationRunner component. Right click on the component and select the Open Viewer functionality. 173 +This functionality is available for the **SimulationRunner** component. Right click on the component and select the **Open Viewer** functionality. 174 174 175 175 This opens a new JupyterLab tab with an editable notebook. After following the instructions in the notebook, you will see a simple time-series plot of the simulated model signal over time. 176 176 ... ... @@ -193,8 +193,14 @@ 193 193 194 194 === 2. Full VBI Inference workflow === 195 195 196 -Contains all VBI components required to run an inference workflow (e.g.,inference configuration,model,simulator,trainposterior,sampleposterior).196 +Contains all VBI components required to run an inference workflow, from __prior sampling__ and __simulation__ to __posterior training__ and __posterior sampling__. 197 197 198 +The workflow starts with **ConfigInference**, which builds the configuration inputs needed by the workflow. It samples parameter values from the prior distribution to generate __theta__ and prepares the feature-extraction configuration (__cfg__) used later in the pipeline. 199 + 200 +Next, **SimulationRunner** executes the selected **VBI model** for a batch of parameter samples (theta) using the chosen backend (//cpp//, //cupy// or //numba//). It selects the requested output signal from the model result and extracts the summary features defined in cfg, producing the __feature matrix__ used for training. 201 + 202 +The resulting features and parameter samples are then passed to **TrainPosterior**, which standardizes the feature matrix with //StandardScaler //and trains a posterior distribution using an SBI method (//SNPE//, //SNLE//, or //SNRE//). In the last step, **SamplePosterior** draws parameter samples from the trained posterior distribution, conditioned on the selected observed feature vector. 203 + 198 198 [[image:vbi_workflow.png||height="590" width="1100"]] 199 199 200 200 === 3. Configuring model parameters using the PhasePlaneWidget: ===