Understanding the Importance of LiDAR in Joint Embedding (JE) Architectures
Joint embedding (JE) architectures are becoming popular for acquiring transferable data representations in artificial intelligence (AI). However, evaluating learned representations without access to a downstream task and an annotated dataset can be a challenge. This makes it difficult to improve on architectural and training choices for JE methods.
Introducing LiDAR: A New Metric
In this paper, the authors introduce LiDAR (Linear Discriminant Analysis Rank), a metric designed to measure the quality of representations within JE architectures. LiDAR addresses several shortcomings of recent approaches by differentiating between informative and uninformative features.
The study shows that LiDAR surpasses rank-based approaches in predicting optimal hyperparameters. This criterion provides a more robust and intuitive way of assessing the quality of representations within JE architectures, which can help in the broader adoption of these techniques in various domains.