Brain.js: How to do chat bot?

Created on 9 Jun 2018 · 11Comments · Source: BrainJS/brain.js

Why it didn't work? I tried set sents in [], same problem
Can anyone show example how make simple chat bot?

var brain = require('brain.js');
var net = new brain.recurrent.LSTM();
net.train([
    {input: "hello", output: "Hi!"},
    {input: "How are you?", output: "Super!"},
    {input: "Where are you?", output: "Next to you"}
], { log: true });

console.log(net.run("Hello!"));

Sometimes it crash with errors like

Error: unrecognized character "Hello!"
at DataFormatter.toIndexes (/home/node/neural/node_modules/brain.js/dist/utilities/data-formatter.js:85:17)
at DataFormatter.toIndexesInputOutput (/home/node/neural/node_modules/brain.js/dist/utilities/data-formatter.js:103:23)
at LSTM.formatDataIn (/home/node/neural/node_modules/brain.js/dist/recurrent/rnn.js:769:35)
at LSTM.run (/home/node/neural/node_modules/brain.js/dist/recurrent/rnn.js:381:24)
at Object. (/home/node/neural/index.js:9:17)
at Module._compile (internal/modules/cjs/loader.js:702:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
at Module.load (internal/modules/cjs/loader.js:612:32)
at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
at Function.Module._load (internal/modules/cjs/loader.js:543:3)

Sorry for my bad English

bug help wanted

Source

HubUzername

Most helpful comment

We really need to handle the case of a generic non-understood value so that the net can essentially just skip that value.

robertleeplummerjr on 12 Jul 2018

👍3

All 11 comments

This is because in thestring Hello! is not equal or similar to hello. The neural network is "case-sensitive"

MegaITA on 8 Jul 2018

We really need to handle the case of a generic non-understood value so that the net can essentially just skip that value.

robertleeplummerjr on 12 Jul 2018

👍3

I'm working on v2 stuff, anyone want to try and handle this?

robertleeplummerjr on 12 Jul 2018

Can I? 🔢

mubaidr on 12 Jul 2018

What needs to happen: The formatter just needs an extra character detection.

The formatter: https://github.com/BrainJS/brain.js/blob/master/src/utilities/data-formatter.js
The exception being thrown: https://github.com/BrainJS/brain.js/blob/88b0dda9429653d0d688a8ecadb2952be703e70a/src/utilities/data-formatter.js#L63
We simply just want to use a general character for cases the character isn't understood.

robertleeplummerjr on 12 Jul 2018

If you allow me to suggest one more thing to be changed/added(which would help making a chatbot, so kinda the topic of the post... right?): It would be interesting to be able to train new data to the NN, without having to train everything again, as it may cost performance