From cafb3868403d7159a9f3c9fb737dab98a6c98390 Mon Sep 17 00:00:00 2001 From: Apher Date: Tue, 7 Jul 2026 00:36:57 +0000 Subject: [PATCH] Add intent resolving with Xenova/all-MiniLM-L6-v2 --- package-lock.json | 859 ++++++++++++++++++++++++++++++++++++++++++++++ package.json | 1 + src/server.js | 120 ++++++- 3 files changed, 967 insertions(+), 13 deletions(-) diff --git a/package-lock.json b/package-lock.json index 7f2b5ff..b269c72 100644 --- a/package-lock.json +++ b/package-lock.json @@ -9,6 +9,7 @@ "version": "1.0.0", "license": "ISC", "dependencies": { + "@xenova/transformers": "^2.17.2", "pg": "^8.22.0", "redis": "^6.1.0", "sequelize": "^6.37.8" @@ -18,6 +19,78 @@ "nodemon": "^3.1.14" } }, + "node_modules/@huggingface/jinja": { + "version": "0.2.2", + "resolved": "https://registry.npmjs.org/@huggingface/jinja/-/jinja-0.2.2.tgz", + "integrity": "sha512-/KPde26khDUIPkTGU82jdtTW9UAuvUTumCAbFs/7giR0SxsvZC4hru51PBvpijH6BVkHcROcvZM/lpy5h1jRRA==", + "license": "MIT", + "engines": { + "node": ">=18" + } + }, + "node_modules/@protobufjs/aspromise": { + "version": "1.1.2", + "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz", + "integrity": "sha512-j+gKExEuLmKwvz3OgROXtrJ2UG2x8Ch2YZUxahh+s1F2HZ+wAceUNLkvy6zKCPVRkU++ZWQrdxsUeQXmcg4uoQ==", + "license": "BSD-3-Clause" + }, + "node_modules/@protobufjs/base64": { + "version": "1.1.2", + "resolved": "https://registry.npmjs.org/@protobufjs/base64/-/base64-1.1.2.tgz", + "integrity": "sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg==", + "license": "BSD-3-Clause" + }, + "node_modules/@protobufjs/codegen": { + "version": "2.0.5", + "resolved": "https://registry.npmjs.org/@protobufjs/codegen/-/codegen-2.0.5.tgz", + "integrity": "sha512-zgXFLzW3Ap33e6d0Wlj4MGIm6Ce8O89n/apUaGNB/jx+hw+ruWEp7EwGUshdLKVRCxZW12fp9r40E1mQrf/34g==", + "license": "BSD-3-Clause" + }, + "node_modules/@protobufjs/eventemitter": { + "version": "1.1.1", + "resolved": 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@@ -723,6 +1558,18 @@ "nodetouch": "bin/nodetouch.js" } }, + "node_modules/tunnel-agent": { + "version": "0.6.0", + "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz", + "integrity": "sha512-McnNiV1l8RYeY8tBgEpuodCC1mLUdbSN+CYBL7kJsJNInOP8UjDDEwdk6Mw60vdLLrr5NHKZhMAOSrR2NZuQ+w==", + "license": "Apache-2.0", + "dependencies": { + "safe-buffer": "^5.0.1" + }, + "engines": { + "node": "*" + } + }, "node_modules/undefsafe": { "version": "2.0.5", "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.5.tgz", @@ -734,6 +1581,12 @@ "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz", "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==" }, + "node_modules/util-deprecate": { + "version": "1.0.2", + "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz", + "integrity": 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a/src/server.js +++ b/src/server.js @@ -3,6 +3,8 @@ if (process.env.NODE_ENV !== "production") { require("dotenv").config(); } +const {pipeline} = require("@xenova/transformers"); + const models = require("./models"); const db = models.db; const redis = models.redis; @@ -10,16 +12,106 @@ const {sequelize, Sequelize} = db; const config = require("./config"); -const handleIntent = async (streamKey, intent) => { - await redis.client.xAdd( - streamKey, - '*', - { - transcript_id: intent.id, - command: "[TEST] INTENT_RECEIVED", - device_id: intent.message.device_id - } - ) +const INTENTS = [ + { + name: "play_music", + examples: ["play music", "start music", "resume music", "play songs"], + }, + { + name: "stop_music", + examples: ["stop music", "pause music", "halt music", "stop playback"], + }, + { + name: "open_browser", + examples: ["open browser", "launch browser", "start chrome", "open chrome"], + }, + { + name: "set_volume", + examples: ["set volume to 30", "volume 50", "turn volume up", "turn volume down"], + }, +]; + +let extractor; + +function normalizeText(text) { + return text + .toLowerCase() + .replace(/[^\w\s]/g, " ") + .replace(/\s+/g, " ") + .trim(); +} + +function cosineSimilarity(a, b) { + let dot = 0; + let magA = 0; + let magB = 0; + + for (let i = 0; i < a.length; i++) { + dot += a[i] * b[i]; + magA += a[i] * a[i]; + magB += b[i] * b[i]; + } + + return dot / (Math.sqrt(magA) * Math.sqrt(magB)); +} + +async function initModel() { + extractor = await pipeline("feature-extraction", "Xenova/all-MiniLM-L6-v2"); +} + +async function embed(text) { + const output = await extractor(normalizeText(text), { + pooling: "mean", + normalize: true, + }); + + return Array.from(output.data); +} + +async function classifyIntent(text) { + const inputEmbedding = await embed(text); + + let best = { + name: "unknown", + confidence: 0, + matched: null, + }; + + for (const intent of INTENTS) { + for (const example of intent.examples) { + const exampleEmbedding = await embed(example); + const score = cosineSimilarity(inputEmbedding, exampleEmbedding); + + if (score > best.confidence) { + best = { + name: intent.name, + confidence: score, + matched: example, + }; + } + } + } + + return best; +} + +async function handleIntent(streamKey, msg) { + const text = msg.message?.text; + const deviceId = msg.message?.device_id; + + if (!text) return; + + const intent = await classifyIntent(text); + + await redis.client.xAdd(streamKey, '*', { + transcript_id: msg.id, + command: intent.name, + confidence: String(intent.confidence), + matched: intent.matched || "", + device_id: deviceId || "", + text, + }); + console.log("TODO: Handle Intents", intent); } @@ -39,11 +131,11 @@ async function processor(group, consumer, streamKey) { for (const stream of res) { for (const msg of stream.messages) { try { - console.log(`[${consumer}] Processing:`, msg); + console.log(`[${consumer}] Processing:`, msg); - await handleIntent("commands", msg); + await handleIntent("commands", msg); - await redis.client.xAck(streamKey, group, msg.id); + await redis.client.xAck(streamKey, group, msg.id); } catch (err) { console.error("Failed to process message:", err); } @@ -60,6 +152,8 @@ const main = async () => { if (doForce) console.info("Database dropped and resynced (force=true)."); + await initModel(); + await redis.ensureGroup("transcripts", 'nlp'); await redis.ensureGroup("commands", 'nlp');