Great article. I've been working in and around this space since 2014, and I think similarity learning, vector search, and embedding management will be a core part of future applications that leverage ML.<p>I recently built a similarity search application that recommends new Pinterest users channels to follow based on liked images using Milvus (<a href="https://github.com/milvus-io/milvus" rel="nofollow">https://github.com/milvus-io/milvus</a>) as a backend. Similarity learning is a huge part of it, and I'm glad more and more tools like Quaterion are being released to help make this kind of tech ubiquitous.