Add re-ranker mode to support re-ranking experiments, hopefully we can reduce the loss

agent/verify.ts

@@ -0,0 +1,40 @@
+import { END, START, StateGraph } from "@langchain/langgraph";
+import { MessagesState } from "./state";
+import { verificationSetup } from "./nodes/verificationSetup";
+import { ragasMetrics } from "./nodes/ragasMetrics";
+import { produceRanking } from "./nodes/produceRanking";
+import { createModelNode } from "./nodes/model";
+import { loopEndConditional } from "./conditionals/loop_end";
+import { sort } from "./nodes/sort";
+
+const verificationModel = createModelNode([], "verify.txt");
+const relationModel = createModelNode([], "relation.txt");
+
+const agent = new StateGraph(MessagesState)
+  
+  //NODES
+  .addNode(verificationSetup.name, verificationSetup)
+  .addNode("verificationModel", verificationModel)
+  .addNode(ragasMetrics.name, ragasMetrics)
+  .addNode("relationModel", relationModel)
+  
+  .addNode(produceRanking.name, produceRanking)
+  .addNode(sort.name, sort)
+  
+  .addEdge(START, verificationSetup.name)
+  .addEdge(verificationSetup.name, "verificationModel")
+  .addEdge(verificationSetup.name, ragasMetrics.name)
+  .addEdge(verificationSetup.name, "relationModel")
+
+  .addEdge(ragasMetrics.name, produceRanking.name)
+  .addEdge("verificationModel", produceRanking.name)
+  .addEdge("relationModel", produceRanking.name)
+
+  // @ts-expect-error
+  .addConditionalEdges(produceRanking.name, loopEndConditional, [verificationSetup.name, sort.name])
+  
+  .addEdge(sort.name, END)
+
+  .compile();
+
+  export {agent}