Update dspy-usecases.md

docs/docs/dspy-usecases.md

@@ -22,6 +22,7 @@ This list is ever expanding and highly incomplete (WIP)! We'll be adding a bunch
 | **[Databricks](https://www.databricks.com/)** | Research, products, and customer solutions around LM Judges, RAG applications, and classification tasks. [Blog](https://www.databricks.com/blog/dspy-databricks) |
 | **[Sephora](https://www.sephora.com/)** | Undisclosed agent usecases; perspectives shared in [DAIS Session](https://www.youtube.com/watch?v=D2HurSldDkE). |
 | **[Zoro UK](https://www.zoro.co.uk/)** | E-commerce applications around structured shopping. [Portkey Session](https://www.youtube.com/watch?v=_vGKSc1tekE) |
+| **[DDI](https://www.ddiworld.com/)** | Used DSPy for prompt optimization to automate behavioral analysis for clients, improving recall score from 43% to 98%. [Blog](https://www.databricks.com/customers/ddi) |
 | **[VMware](https://www.vmware.com/)** | RAG and other prompt optimization applications. [Interview in The Register.](https://www.theregister.com/2024/02/22/prompt_engineering_ai_models/) [Business Insider.](https://www.businessinsider.com/chaptgpt-large-language-model-ai-prompt-engineering-automated-optimizer-2024-3) |
 | **[Haize Labs](https://www.haizelabs.com/)** | Automated red-teaming for LLMs. [Blog](https://blog.haizelabs.com/posts/dspy/) |
 | **[Plastic Labs](https://www.plasticlabs.ai/)** | Different pipelines within Honcho. [Blog](https://blog.plasticlabs.ai/blog/User-State-is-State-of-the-Art) |