updates per PR comments

packages/components/nodes/chains/VectaraChain/VectaraChain.ts

@@ -248,7 +248,8 @@ class VectaraChain_Chains implements INode {
             lexicalInterpolationConfig: { lambda: vectaraFilter?.lambda ?? 0.025 }
         }))
 
-        const mmrRerankerId = 272725718 // Vectara reranker ID for MMR
+        // Vectara reranker ID for MMR (https://docs.vectara.com/docs/api-reference/search-apis/reranking#maximal-marginal-relevance-mmr-reranker)
+        const mmrRerankerId = 272725718
         const mmrEnabled = vectaraFilter?.mmrConfig?.enabled
 
         const data = {

packages/components/nodes/vectorstores/Vectara/Vectara.ts

@@ -110,7 +110,10 @@ class Vectara_VectorStores implements INode {
             {
                 label: 'MMR diversity bias',
                 name: 'mmrDiversityBias',
-                description: 'The diversity bias to use for MMR. Defaults to 0 (MMR disabled)',
+                description:
+                    'The diversity bias to use for MMR. This is a value between 0.0 and 1.0' +
+                    'Values closer to 1.0 optimize for the most diverse results.' +
+                    'Defaults to 0 (MMR disabled)',
                 placeholder: '0.0',
                 type: 'number',
                 additionalParams: true,