Explanations for \emph{black-box} models help us understand model decisions
as well as provide information on model biases and inconsistencies. Most of the
current explainability techniques provide a single level of explanation, often
in terms of feature importance scores or feature attention maps in input space.
Our focus is on explaining deep discriminative models at \emph{multiple levels
of abstraction}, from fine-grained to fully abstract explanations. We achieve
this by using the natural properties of \emph{hyperbolic geometry} to more
efficiently model a hierarchy of symbolic features and generate
\emph{hierarchical symbolic rules} as part of our explanations. Specifically,
for any given deep discriminative model, we distill the underpinning knowledge
by discretisation of the continuous latent space using vector quantisation to
form symbols, followed by a \emph{hyperbolic reasoning block} to induce an
\emph{abstraction tree}. We traverse the tree to extract explanations in terms
of symbolic rules and its corresponding visual semantics. We demonstrate the
effectiveness of our method on the MNIST and AFHQ high-resolution animal faces
dataset. Our framework is available at
https://github.com/koriavinash1/SymbolicInterpretability.

使用超几何来解释深度判别模型的特征重要性和生成层级符号规则的方法，有效提高了模型解释的多级抽象水平。