## 🚀 Feature It would be nice to add cosine similarity as a Metric. Cosine similarity between feature vectors is often used in representation learning. <!-- A clear and concise description of the feature proposal --> <!-- Please outline the motivation for the proposal. Is your feature request related to a problem? e.g., I'm always frustrated when [...]. If this is related to another GitHub issue, please link here too --> <!-- A clear and concise description of what you want to happen. --> <!-- A clear and concise description of any alternative solutions or features you've considered, if any. --> <!-- Add any other context or screenshots about the feature request here. -->