/usr/include/shogun/multiclass/ecoc/ is in libshogun-dev 3.2.0-7.3build4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/shogun/multiclass/ecoc/ECOCAEDDecoder.h
/usr/include/shogun/multiclass/ecoc/ECOCDecoder.h
/usr/include/shogun/multiclass/ecoc/ECOCDiscriminantEncoder.h
/usr/include/shogun/multiclass/ecoc/ECOCEDDecoder.h
/usr/include/shogun/multiclass/ecoc/ECOCEncoder.h
/usr/include/shogun/multiclass/ecoc/ECOCForestEncoder.h
/usr/include/shogun/multiclass/ecoc/ECOCHDDecoder.h
/usr/include/shogun/multiclass/ecoc/ECOCIHDDecoder.h
/usr/include/shogun/multiclass/ecoc/ECOCLLBDecoder.h
/usr/include/shogun/multiclass/ecoc/ECOCOVOEncoder.h
/usr/include/shogun/multiclass/ecoc/ECOCOVREncoder.h
/usr/include/shogun/multiclass/ecoc/ECOCRandomDenseEncoder.h
/usr/include/shogun/multiclass/ecoc/ECOCRandomSparseEncoder.h
/usr/include/shogun/multiclass/ecoc/ECOCSimpleDecoder.h
/usr/include/shogun/multiclass/ecoc/ECOCStrategy.h
/usr/include/shogun/multiclass/ecoc/ECOCUtil.h