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Causal graphical model

As explained in Causal Inference for Data Science

A causal graphical model represents causal relationships among variables with a graph together with a probabilistic or structural model.

A causal graphical model represents hypothesized causal relationships among variables with a graph and an accompanying probabilistic or structural model. It supports questions about what would change under an intervention, rather than merely describing correlations or predicting outcomes. section 3.2.2

Construct the graph by treating arrows as claims about direct effects. Include an arrow when a direct effect is plausible; remove one only when confident that no direct effect exists. Missing arrows therefore encode assumptions, not discoveries guaranteed by the data. section 3.2.2

Topic and pageviews

To study how Topic affects Pageviews, connect Topic to Platform and Pageviews. Seasonality and Popularity confound the relationship, while Platform mediates part of Topic’s effect. The graph makes these roles explicit before choosing an analysis. section 3.2.2

A graph is not automatically recoverable from observational data. Correlation does not reveal arrow direction: both X → Y and Y → X can generate the same joint distribution without additional assumptions. Directed acyclic graphs also cannot represent simultaneous feedback directly; time-series data can sometimes unfold such relationships over time. section 3.2.2

How Causal Inference for Data Science covers it

How deep it goes
Explains graph construction through arrow assumptions, confounders, mediators, direction ambiguity, and cyclic-graph limitations.
Examples
Uses Topic, Platform, Pageviews, Seasonality, and Popularity to illustrate confounding and mediation.
What you can do after
Evaluate causal assumptions by drawing arrows, identifying confounders and mediators, and recognizing when data cannot determine direction.
How it connects
Connects causal graphs with confounders, mediators, causal discovery, directed acyclic graphs, and time-series data.

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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Causal Inference for Data Science. The section links point to the parts of the book it draws on.