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janfish/similarity-library
==========================

Similarity Algorithm Library

02PHP

Since Nov 16Pushed 5y ago1 watchersCompare

[ Source](https://github.com/zeng444/similarity-algorithm-library)[ Packagist](https://packagist.org/packages/janfish/similarity-library)[ RSS](/packages/janfish-similarity-library/feed)WikiDiscussions master Synced today

READMEChangelogDependenciesVersions (1)Used By (0)

Similarity Algorithm Library
============================

[](#similarity-algorithm-library)

### Algorithms

[](#algorithms)

- Jaccard Index

```
$alg = new \Janfish\Algorithm\Similarity(Similarity::JI_ALG);
$alg->setVectors([1, 2, 3, 4, 5], [3, 4, 56, 7, 2]);
var_dump($alg->compare());
```

- Manhattan Distance

```
$alg = new Similarity(Similarity::MD_ALG);
$alg->setVectors([1, 2, 3, 4, 5], [3, 4, 56, 7, 2, 2, 3, 4]);
var_dump($alg->compare());
```

- Euclidean Distance

```
$alg = new \Janfish\Algorithm\Similarity(Similarity::ED_ALG);
$alg->setVectors([1, 2, 3, 4, 5], [3, 4, 56, 7, 2]);
var_dump($alg->compare());
```

- Consinus Included Angle

```
$alg = new \Janfish\Algorithm\Similarity(Similarity::CIA_ALG);
$alg->setVectors([1, 2, 3, 4, 5], [3, 4, 56, 7, 2]);
var_dump($alg->compare());
```

### All Methods

[](#all-methods)

```
$alg = new \Janfish\Algorithm\Similarity();
$alg->setVectorA([1, 2, 3, 4, 5]);
$alg->setVectorB([3, 4, 56, 7, 2]);
$alg->setScale(7);
$alg->compare();

```

###  Health Score

16

—

LowBetter than 4% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity2

Limited adoption so far

Community7

Small or concentrated contributor base

Maturity32

Early-stage or recently created project

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

### Community

Maintainers

![](https://www.gravatar.com/avatar/60a62fd9f299f25558ac4a898ae3833bd7185ba4706bb167a8cabf05a3d96955?d=identicon)[Robert Zeng](/maintainers/Robert%20Zeng)

---

Top Contributors

[![zeng444](https://avatars.githubusercontent.com/u/941266?v=4)](https://github.com/zeng444 "zeng444 (5 commits)")

### Embed Badge

![Health badge](/badges/janfish-similarity-library/health.svg)

```
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```

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