Tree grammars take up a lot of space in a persisted HL file containing multiple trees

[HeuristicLab-Trac-Bot]

Issue migrated from trac ticket # 2268

milestone: HeuristicLab 3.3.11 | component: Encodings.SymbolicExpressionTreeEncoding | priority: medium | resolution: done

2014-10-24 16:41:56: @mkommend created the issue

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For 50,000 trees the uncompressed file size necessary for storing all the tree grammar object is ~ 400 MB. Symbolic expression tree grammars are only used when working with ADF's, which is rarely the case. Hence, if ADF's are disable no tree grammars should be created.

[HeuristicLab-Trac-Bot]

2014-10-24 16:42:22: @mkommend changed status from new to accepted

[HeuristicLab-Trac-Bot]

2014-10-24 16:45:32: @mkommend commented

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r11494: Moved all grammar classes into a new folder. Added new EmptySymbolicExpressionTreeGrammar which is immutable and forwards all calls to the default grammar object.

[HeuristicLab-Trac-Bot]

2014-10-24 16:46:19: @mkommend commented

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r11495: Corrected access modifiers in SymbolicExpressionGrammarBase.

[HeuristicLab-Trac-Bot]

2014-10-24 16:48:03: @mkommend commented

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r11496: Refactored tree creators to use new method for tree grammar creation and handled grammar cloning in the base class.

[HeuristicLab-Trac-Bot]

2014-10-24 16:49:13: @mkommend commented

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r11497: Stored a reference to the grammar object in the cut point to avoid multiple traversion of the parents nodes for grammar access.

[HeuristicLab-Trac-Bot]

2014-10-24 16:52:37: @mkommend commented

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r11498: Adapted unit test (cloning and tree creation) to work with the new empty expression tree grammar.

[HeuristicLab-Trac-Bot]

2014-10-24 17:04:36: @mkommend changed status from accepted to reviewing

[HeuristicLab-Trac-Bot]

2014-10-24 17:04:36: @mkommend changed owner from @mkommend to @gkronber

[HeuristicLab-Trac-Bot]

2014-10-24 21:15:25: @foolnotion commented

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The EmptySymbolicExpressionTreeGrammar class is breaking persistence, missing storable attributes.

[HeuristicLab-Trac-Bot]

2014-10-24 21:15:25: @mkommend

[HeuristicLab-Trac-Bot]

2014-10-27 10:21:49: @mkommend changed status from reviewing to assigned

[HeuristicLab-Trac-Bot]

2014-10-27 10:21:49: @mkommend changed owner from @gkronber to @mkommend

[HeuristicLab-Trac-Bot]

2014-10-27 10:21:49: @mkommend commented

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The ADF parameters of the various GP problems are not synced with the grammar properties for ADFs and hence the unit test for artificial ant and lawn mower fail.

[HeuristicLab-Trac-Bot]

2014-10-27 13:24:25: @mkommend commented

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r11504: Set ADF grammar parameters to the correct during problem creation and disabled a warning in EmtpySymbolicExpressionTreeGrammar.

[HeuristicLab-Trac-Bot]

2014-11-11 12:23:59: @mkommend commented

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r11532: Added storable attributes and ctor to EmtpySymbolicExpressionTreeGrammar.

[HeuristicLab-Trac-Bot]

2014-11-11 12:25:03: @mkommend changed status from assigned to reviewing

[HeuristicLab-Trac-Bot]

2014-11-11 12:25:03: @mkommend changed owner from @mkommend to @gkronber

[HeuristicLab-Trac-Bot]

2014-11-11 12:37:31: @mkommend commented

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r11536: Changed access modifier of EmptySymbolicExpressionTreeGrammer from internal to private.

[HeuristicLab-Trac-Bot]

2015-01-09 09:45:21: @gkronber changed status from reviewing to readytorelease

[HeuristicLab-Trac-Bot]

2015-01-09 09:45:21: @gkronber changed owner from @gkronber to @mkommend

[HeuristicLab-Trac-Bot]

2015-01-09 09:45:21: @gkronber commented

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Reviewed r11494 to r11498 and r11504, r11532, r11536. And tested HL runs with and without ADFs.

Note: I did not test serialization/persistence.

[HeuristicLab-Trac-Bot]

2015-02-03 14:29:32: @mkommend changed status from readytorelease to closed

[HeuristicLab-Trac-Bot]

2015-02-03 14:29:32: @mkommend removed resolution

[HeuristicLab-Trac-Bot]

2015-02-03 14:29:32: @mkommend commented

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r11874: Merged r11494, r11495, r11496, r11497, r11498, r11504, r11532, r11536 into stable.