  Commonsense question-answering (QA) tasks, in the form of benchmarks, are
constantly being introduced for challenging and comparing commonsense QA
systems. The benchmarks provide question sets that systems' developers can use
to train and test new models before submitting their implementations to
official leaderboards. Although these tasks are created to evaluate systems in
identified dimensions (e.g. topic, reasoning type), this metadata is limited
and largely presented in an unstructured format or completely not present.
Because machine common sense is a fast-paced field, the problem of fully
assessing current benchmarks and systems with regards to these evaluation
dimensions is aggravated. We argue that the lack of a common vocabulary for
aligning these approaches' metadata limits researchers in their efforts to
understand systems' deficiencies and in making effective choices for future
tasks. In this paper, we first discuss this MCS ecosystem in terms of its
elements and their metadata. Then, we present how we are supporting the
assessment of approaches by initially focusing on commonsense benchmarks. We
describe our initial MCS Benchmark Ontology, an extensible common vocabulary
that formalizes benchmark metadata, and showcase how it is supporting the
development of a Benchmark tool that enables benchmark exploration and
analysis.
