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v4.0.0 with multistate markov chains
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xiboon committed Aug 23, 2024
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5 changes: 1 addition & 4 deletions .gitignore
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node_modules
dist
# that's my tool for benchmarking the speed
src/speed.ts
all.txt
dataset.txt
data.txt
191 changes: 3 additions & 188 deletions LICENSE
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Copyright 2024 kubus

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Copyright 2022 xiboon

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56 changes: 28 additions & 28 deletions README.md
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<h1 align=center> kurwov </h1>
A fast, dependency-free library for creating Markov Chains.


## API
Generating a dataset.
```ts
import { MarkovData } from 'kurwov';
const sentences = ['i love hamburgers', 'i love cats'];
const data = new MarkovData(sentences);
const chain = new MarkovChain(sentences);
```

Using your dataset to generate a sentence.
```ts
import { Markov } from 'kurwov';
Markov.generate({ data, maxLength: 100 }); // i love hamburgers or i love cats
chain.generate(); // i love hamburgers or i love cats
```

Adding an sentence to the dataset.
```ts
data.add('i love dogs');
chain.add('i love dogs');
```

Completing a sentence.
```ts
Markov.complete({ data, start: 'i love' }); // i love dogs, i love hamburgers, or i love cats
chain.complete({ data, start: 'i love' }); // i love dogs, i love hamburgers, or i love cats
```
## Features
Feature | kurwov | markov-typescript | markov-generator | markov-strings | markov-chains
--- | --- | --- | --- | --- | ---
Dependency-free | ✔️ | ❌ | ✔️ | ❌ | ❌
Typings | ✔️ | ❌ | ❌ | ✔️ | ❌
Generating sentences | ✔️ | ✔️ | ✔️ | ✔️ | ✔️
Completing sentences | ✔️ | ❌ | ❌ | ❌ | ❌
Adding stuff other than strings | ❌ | ✔️ | ❌ | ❌ | ✔️

## Comparison
Feature | kurwov | markov-typescript | markov-generator | markov-strings | markov-chains | mrkv
--- | --- | --- | --- | --- | --- | ---
Dependency-free | ✔️ | ❌ | ✔️ | ❌ | ❌ | ✔️
Typings | ✔️ | ❌ | ❌ | ❌ (incorrect) | ❌ | ✔️
Generating sentences | ✔️ | ✔️ | ✔️ | ✔️ | ❌ (errors) | ❌ (errors)
Completing sentences | ✔️ | ❌ | ❌ | ❌ | ❌ | ✔️
Higher statesize support | ✔️ | ✔️ | ❌ | ✔️ | ❌ | ❌
Adding stuff other than strings | ❌ | ✔️ | ❌ | ❌ | ✔️ | ❌ |
Total package size | 16.6KB | 1.4MB | 7.9KB* | 1.4MB | 51KB | 20KB

If you use markov chains to generate sentences, kurwov is far better than other libraries. It's the fastest and smallest package in the comparison, and has typings.
\* While markov-generator is only 7.9KB, it doesn't include ESM support and doesn't include typings. It also doesn't support higher statesizes which results in less code.
## Speed
### kurwov speed over versions
Benchmark | v1 | v2 | v3
--- | --- | --- | ---
Generating a dataset with 10000 sentences. | 649.55ms | 89.26ms | 50.53ms
Generating a dataset with 100000 sentences. | 25509.70ms | 873.43ms | 572.49ms
Benchmarks ran on a 6c/12t AMD Ryzen 5 5600 @ 4.45GHz with 32gb ddr4 3200mhz RAM on Ubuntu through WSL2 with Node.js v22.5.1
Using data from [amazon q/a dataset](https://cseweb.ucsd.edu/~jmcauley/datasets/amazon/qa/), using the first n (10k or 100k) answers from the electronics dataset.


### kurwov speed compared to other markov packages
Benchmark | kurwov | markov-typescript | markov-generator | markov-strings | markov-chains
Benchmark | kurwov | markov-typescript | markov-generator | markov-strings | markov-chains, foswig, mrkv
--- | --- | --- | --- | --- | ---
Generating a dataset with 10000 sentences. | 50.53ms | 419.66ms | 346.16ms | 1834.32ms | N/A (errored)
Generating a dataset with 100000 sentences. | 572.49ms | 6221.28ms | 28329.17ms | N/A (couldn't finish in over 10 minutes) | N/A (errored)

## My other packages
[Tiscord](https://npmjs.com/package/tiscord)

[Tisbench](https://npmjs.com/package/tisbench)
Generating a dataset with 10000 sentences. | 64.30ms | 458.90ms | 127.63ms | 1507.75ms | N/A (errored)
Generating a dataset with 100000 sentences. | 1046.55ms | 5815.11ms | 8844.53ms | 78044.7619ms | N/A (errored)

[Tisflake](https://npmjs.com/package/tisflake)
### kurwov speed compared to other markov packages with higher statesize
Benchmark | kurwov | markov-typescript | markov-strings
Generating a dataset with 10000 sentences. | 182.08ms | 702.25ms | 1349.19ms
Generating a dataset with 100000 sentences. | 3481.44ms | 10154.96ms | 77600.49ms
42 changes: 42 additions & 0 deletions bench.mjs
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import { readFile } from 'node:fs/promises';
import * as MarkovStrings from 'markov-strings';
import MarkovTypescript from 'markov-typescript';
import { Bench } from 'tinybench';
import { MultiStateMarkovChain as MultiStateKurwov } from './dist/index.mjs';
// replace the 10000 with the number of sentences you want to use for the benchmark
const data = (await readFile('data.txt', 'utf8')).split('\n').slice(0, 10000);
console.log('Data size:', data.length);
const bench = new Bench()
.add('kurwov', () => {
const chain = new Kurwov(data);
chain.generate();
})
.add('kurwov-multistate', () => {
const chain = new MultiStateKurwov(data, 2);
chain.generate();
})
.add('markov-typescript', () => {
const chain = new MarkovTypescript.MarkovChain(2);
for (const line of data) {
chain.learn(line.split(' '));
}
chain.walk().join(' ');
})
.add('markov-generator', () => {
const chain = new MarkovGen({
input: data,
minLength: 0,
});
chain.makeChain();
})
.add('markov-strings', () => {
const chain = new MarkovStrings.default.default(2);
chain.addData(data);
chain.generate();
});
await bench.warmup();
await bench.run();

console.table(bench.table());

// foswig, mrkv, markov-chains error as of 2024-08-23 so they're not included
27 changes: 16 additions & 11 deletions package.json
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{
"name": "kurwov",
"version": "3.2.6",
"description": "a markov chain library",
"version": "4.0.0",
"description": "The fastest Markov Chain library for JavaScript",
"scripts": {
"build": "tsup",
"check": "biome check .",
Expand All @@ -15,17 +15,18 @@
"module": "dist/index.mjs",
"types": "dist/index.d.ts",
"exports": {
"types": "./dist/index.d.ts",
"import": "./dist/index.mjs",
"require": "./dist/index.js",
"types": "./dist/index.d.ts"
"require": "./dist/index.js"
},
"files": [
"dist"
],
"author": "xiboon",
"license": "Apache-2.0",
"license": "ISC",
"keywords": [
"markov"
"markov",
"markovchain"
],
"repository": {
"type": "git",
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},
"homepage": "https://github.com/xiboon/kurwov#readme",
"devDependencies": {
"@biomejs/biome": "^1.7.2",
"@types/node": "^20.12.8",
"tsup": "^8.0.2",
"tsx": "^4.9.0",
"typescript": "^5.4.5"
"@biomejs/biome": "^1.8.3",
"@types/node": "^22.4.2",
"markov-generator": "^1.2.3",
"markov-strings": "^3.0.1",
"markov-typescript": "^1.1.0",
"tinybench": "^2.9.0",
"tsup": "^8.2.4",
"tsx": "^4.17.0",
"typescript": "^5.5.4"
},
"publishConfig": {
"provenance": true
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