Allow multiple source CSV files for normalisation. Implement real model node. Add normalizarion prompt. Implement normalization setup. Start on RAG retreival functions

agent/tools/clan/retreiveExamples.ts

@@ -3,21 +3,29 @@ import fs from "fs";
 import { pipeline, cos_sim } from "@huggingface/transformers";
 import { logger } from "../../utils/logger";
 
-const CSV_PATH = "./tools/clan/dev-eng.csv";
-const CACHE_PATH = "./tools/clan/dev-eng.embeddings.json";
+const CSV_PATHS = [
+  "./tools/clan/dev-eng.csv",
+  // "./tools/clan/test-eng.csv",
+  "./tools/clan/train-eng.csv",
+];
+
+const CACHE_PATH = "./tools/clan/dev.embeddings.json";
 
 type EmbeddingCache = {
-  texts: string[];
+  rawtexts: string[];
+  cleantexts: string[];
   embeddings: number[][];
 };
 
 export type NormalisedMatch = {
-  index: number; 
-  score: number; 
-  text: string
+  index: number;
+  score: number;
+  rawtext: string;
+  cleantext: string;
 };
 
-let texts: string[] = [];
+let rawtexts: string[] = [];
+let cleantexts: string[] = [];
 let embeddings: number[][] = [];
 
 const featureExtractor = await pipeline(
@@ -33,20 +41,23 @@ async function loadOrBuildCache(): Promise<void> {
     const raw = fs.readFileSync(CACHE_PATH, "utf-8");
     const cache: EmbeddingCache = JSON.parse(raw);
 
-    texts = cache.texts;
-
+    rawtexts = cache.rawtexts;
+    cleantexts = cache.cleantexts;
     embeddings = cache.embeddings.map(e => Array.from(e));
 
     logger.info("Loaded %s embeddings", embeddings.length);
     return;
   }
 
-  logger.warn("Cache not found. Generating embeddings", embeddings.length);
+  logger.warn("Cache not found. Generating embeddings");
 
-  await buildCacheFromCSV();
+  for (const csvPath of CSV_PATHS) {
+    await buildCacheFromCSV(csvPath);
+  }
 
   const cache: EmbeddingCache = {
-    texts,
+    rawtexts,
+    cleantexts,
     embeddings,
   };
 
@@ -55,10 +66,12 @@ async function loadOrBuildCache(): Promise<void> {
   logger.info("Cached %s embeddings", embeddings.length);
 }
 
-async function buildCacheFromCSV(): Promise<void> {
+async function buildCacheFromCSV(csvPath: string): Promise<void> {
   let count = 0;
 
-  const stream = fs.createReadStream(CSV_PATH).pipe(parse());
+  logger.info("Processing CSV: %s", csvPath);
+
+  const stream = fs.createReadStream(csvPath).pipe(parse());
 
   for await (const row of stream) {
     const text = row[0];
@@ -69,19 +82,27 @@ async function buildCacheFromCSV(): Promise<void> {
       normalize: true,
     });
 
-    texts.push(text);
+    rawtexts.push(text);
+    cleantexts.push(row[1]);
     const vector = Array.from(output.data as Float32Array);
     embeddings.push(vector);
 
 
     count++;
     if (count % 100 === 0) {
-      logger.info("Processed %s", count);
+      logger.info("[%s] Processed %s rows", csvPath, count);
     }
   }
+
+  logger.info("[%s] Finished (%s rows)", csvPath, count);
 }
 
-export async function calculateSimilarity(query: string,topK = 5): Promise<NormalisedMatch[]> {
+export async function calculateSimilarity(
+  query: string,
+  topK = 5
+): Promise<NormalisedMatch[]> {
+  await loadOrBuildCache()
+
   const queryEmbedding = await featureExtractor(query, {
     pooling: "mean",
     normalize: true,
@@ -91,17 +112,9 @@ export async function calculateSimilarity(query: string,topK = 5): Promise<Norma
     .map((embedding, index) => ({
       index,
       score: cos_sim(embedding, queryEmbedding.data as number[]),
-      text: texts[index],
+      rawtext: rawtexts[index],
+      cleantext: cleantexts[index]
     }))
     .sort((a, b) => b.score - a.score)
     .slice(0, topK);
-}
-
-//TEMP: testing code
-await loadOrBuildCache();
-
-const results = await calculateSimilarity(
-  "Wonderful to see London has taken a stand to defend freedom and the right to choose."
-);
-
-console.log(results);
+}

agent/tools/webpageFetch.ts

@@ -0,0 +1,29 @@
+import { Builder, Browser } from "selenium-webdriver";
+import firefox from "selenium-webdriver/firefox";
+
+async function extractWebpageContent(url: string) : Promise<string>{
+    const options = new firefox.Options();
+    options.addArguments("--headless");
+
+    let driver = await new Builder().forBrowser(Browser.FIREFOX).setFirefoxOptions(options).build()
+    try {
+        await driver.get(url)
+        await driver.wait(async () => {
+            return await driver.executeScript(
+                "return document.readyState === 'complete'"
+            );
+        }, 5000);
+
+        const readableText = await driver.executeScript(
+            "return document.body.innerText;"
+        ) as string;
+
+        return readableText
+    } finally {
+        await driver.quit()
+    }
+}
+
+//TODO: Extract, rank snippets
+
+//console.log(await extractWebpageContent("https://www.bbc.co.uk/news/live/c74wd01egvyt"))