/usr/include/vigra/random_forest/ is in libvigraimpex-dev 1.10.0+dfsg-3ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/vigra/random_forest/features.hxx
/usr/include/vigra/random_forest/rf_algorithm.hxx
/usr/include/vigra/random_forest/rf_common.hxx
/usr/include/vigra/random_forest/rf_decisionTree.hxx
/usr/include/vigra/random_forest/rf_earlystopping.hxx
/usr/include/vigra/random_forest/rf_nodeproxy.hxx
/usr/include/vigra/random_forest/rf_online_prediction_set.hxx
/usr/include/vigra/random_forest/rf_preprocessing.hxx
/usr/include/vigra/random_forest/rf_region.hxx
/usr/include/vigra/random_forest/rf_ridge_split.hxx
/usr/include/vigra/random_forest/rf_split.hxx
/usr/include/vigra/random_forest/rf_visitors.hxx
/usr/include/vigra/random_forest/splices.hxx