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@mayer79 mayer79 released this 11 Apr 05:08
· 164 commits to main since this release
0.7.0
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Learn about vigilant mode.

Milestone: Working with multiple 'shapviz' objects

Sometimes, you will find it necessary to work with several "shapviz" objects at the same time:

  • To visualize SHAP values of a multiclass or multi-output model.
  • To compare SHAP plots of different models.
  • To compare SHAP plots between subgroups.

To simplify the workflow, {shapviz} introduces the "mshapviz" object ("m" like "multi"). You can create it in different ways:

  • Use shapviz() on multiclass XGBoost or LightGBM models.
  • Use shapviz() on "kernelshap" objects created from multiclass/multioutput models.
  • Use c(Mod_1 = s1, Mod_2 = s2, ...) on "shapviz" objects s1, s2, ...
  • Or mshapviz(list(Mod_1 = s1, Mod_2 = s2, ...))

The sv_*() functions use the {patchwork} package to glue the individual plots together.

See the new vignette for more info and specific examples.

Other new features

  • sv_dependence() now allows multiple v and/or color_var to be plotted (glued via {patchwork}).
  • {DALEX}: Support for "predict_parts" objects from {DALEX}, thanks to Adrian Stando.
  • Aggregated SHAP values: The argument row_id of sv_waterfall() and sv_force() now also allows a vector of integers or a logical vector. If more than one row is selected, SHAP values and predictions are averaged before plotting (aggregated SHAP values in {DALEX}).
  • Row bind: "shapviz" objects x1, x2 can now be concatenated in rowwise manner using x1 + x2 or rbind(x1, x2), again thanks to Adrian.
  • colnames(): "shapviz" objects x have received a dimnames() function, so you can now, e.g., use colnames(x) to see the feature names.
  • Subsetting: "shapviz" x can now be subsetted using x[cond, features].

Maintenance

  • We have a new contributor: Adrian Stando - welcome on the SHAP board.
  • To be close to my sister package {kernelshap}, I have moved to https://github.com/ModelOriented/shapviz
  • Webpage created with "pgkdown"
  • New dependency: {patchwork}

Other changes

  • Color guides are closer to the plot area. This affects sv_dependence(), sv_importance(kind="bee"), and sv_interaction().
  • The lengthy y axis title "SHAP interaction value" in sv_dependence() has been shortened to "SHAP interaction".
  • As announced, the argument show_other of sv_importance() has been removed.
  • Slightly less picky checks on S_inter.
  • print.shapviz() is much more compact, use summary.shapviz() for more info.

Bug fixes

  • sv_waterfall(): Using order_fun() would not work as expected with max_display. This has been fixed.
  • sv_dependence(): Passing viridis_args = NULL would hide the color guide title. This has been fixed. But please pass viridis_args = list() instead.
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