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DecisionTree Refactor #1155

Merged
merged 5 commits into from
Apr 14, 2022
Merged

DecisionTree Refactor #1155

merged 5 commits into from
Apr 14, 2022

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varunagrawal
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Refactored DecisionTree to:

  1. Make a distinction between leaves and assignments. A tree always has a full number of assignments (which each gives us a value) but can have a smaller number of leaves (the data structure) due to pruning.
  2. Updated the documentation accordingly.
  3. Renamed DT_NO_PRUNING to GTSAM_DT_NO_PRUNING in the event we decide to expose it via CMake.

@varunagrawal varunagrawal requested a review from dellaert March 31, 2022 10:39
@varunagrawal varunagrawal self-assigned this Mar 31, 2022
@varunagrawal varunagrawal deleted the branch develop April 2, 2022 14:01
@varunagrawal varunagrawal reopened this Apr 2, 2022
@varunagrawal varunagrawal changed the base branch from decisiontree/nrAssignments to develop April 2, 2022 14:22
@varunagrawal
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@dellaert hope this PR is up to your expectations.

@varunagrawal
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@dellaert gentle reminder to take a look at this when you can :)

/**
* Functor performing depth-first visit without Assignment<L> argument.
*
* NOTE: We differentiate between leaves and assignments. Concretely, a 3
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So, what does this Functor do? Leaves, right? And should it not now pass the number of assignments captured by the leaf?

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The VisitLeaf functor passes the Leaf object which has the number of assignments recorded in it.

@@ -678,7 +680,14 @@ namespace gtsam {
}

/****************************************************************************/
// Functor performing depth-first visit without Assignment<L> argument.
/**
* Functor performing depth-first visit without Assignment<L> argument.
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What is the argument then?

@@ -763,12 +775,14 @@ namespace gtsam {
}

/****************************************************************************/
// labels is just done with a visit
// Get (partial) labels by performing a visit.
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Explain more. Maybe with example.

*
* @note Due to pruning, leaves might not exhaust choices.
*
*
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I think these functions passed in should now also take an argument for the number of assignments captured in a particular leaf.

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I added visitLeaf as an alternative to that. Should I remove that and update the rest to do this (will be API breaking)?

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Shoot, I merged too soon! I just noticed this new visitLeaf, which in this PR seems identical??

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And the examples are wrong I think... We can talk about it in our meeting.

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Okay! Though I don't want to spend more than 5 minutes on this since it is secondary to the workshop paper.

@varunagrawal varunagrawal requested a review from dellaert April 12, 2022 18:08
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Approved, and I will merge...

@dellaert dellaert merged commit 78d7e90 into develop Apr 14, 2022
@dellaert dellaert deleted the decisiontree-refactor branch April 14, 2022 02:24
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2 participants