LlamaIndex Postprocessor Integration: Jina AI Rerank

Jina Rerank is based on Jina Reranking, which is a state-of-the-art reranking model in terms of

1. Input context length - Jina Reranking is capable of accepting 8K-length input context
2. Reranking performance - Jina Reranking outperforms other models on Mean Reciprocal Rank (MRR) and hit-rate, as shown in these benchmarks.

Please pip install llama-index-postprocessor-jinaai-rerank to install Jina Rerank package.