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Quantitative Finance · Glossaire

Qu'est-ce que « Hidden state » ?

Definition 15.2 Research, Data and Risk Platforms · Chapitre 15 — The Research Environment

A notebook has hidden state when its saved outputs depend on something its cells, run from the top, would not reproduce: a cell run out of order, a cell run twice, a cell edited or deleted after it ran, a name defined only at the prompt.

The planted notebook as saved: code cells in document order with their execution counters. The cleaning cell, second on the page, ran sixth, after the result; the cell that set exclude ran third and was deleted. The saved 1.96 comes from that history.
Figure 15.1. The planted notebook as saved: code cells in document order with their execution counters. The cleaning cell, second on the page, ran sixth, after the result; the cell that set exclude ran third and was deleted. The saved 1.96 comes from that history.
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