BIZNIQUE / LINEAR ALGEBRA / 41
Update a representation as data arrives
Update a representation as data arrives
Track what an incremental update preserves and what needs to be checked again.
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THE IDEA
Read the example.
Read the example.
Incremental methods update a factor representation from new observations instead of always recomputing a decomposition from scratch. The rank slider illustrates the retained approximation; update rules depend on the actual algorithm.
Low rank is a maintained approximation
Use it well
Use it well
Changes in the data distribution can make yesterday’s directions less useful. Monitor reconstruction and task quality, preserve a baseline and decide when a fuller refit is warranted.
TRY IT YOURSELF
A quick check.
A quick check.
Does a cheap update prove that a model still represents the current data well?
Check your reasoning
Check your reasoning
No. Computational convenience and representation quality require separate checks.
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