https://github.com/jsgm/go-odds
Odds conversion and formatting in Go.
https://github.com/jsgm/go-odds
odds probability
Last synced: about 1 year ago
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Odds conversion and formatting in Go.
- Host: GitHub
- URL: https://github.com/jsgm/go-odds
- Owner: jsgm
- License: mit
- Created: 2022-04-10T11:23:10.000Z (about 4 years ago)
- Default Branch: master
- Last Pushed: 2024-04-12T09:39:58.000Z (about 2 years ago)
- Last Synced: 2025-03-29T00:34:26.123Z (about 1 year ago)
- Topics: odds, probability
- Language: Go
- Homepage:
- Size: 109 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Security: SECURITY.md
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README
# go-odds
[](https://pkg.go.dev/github.com/jsgm/go-odds)
[](https://goreportcard.com/report/github.com/jsgm/go-odds)
[](https://opensource.org/licenses/MIT)
__go-odds__ is a simple and fast utility library for making betting odds conversions between formats and calculating probabilities in Go.
Go gopher illustration created by [Egon Elbre](https://github.com/egonelbre), originally created by [Renee French](https://reneefrench.blogspot.com/).
- [Installation](#installation)
- [Converting odds between formats](#converting-odds-between-formats)
* [Data types](#data-types)
* [Odds conversions](#odds-conversions)
- [Overround and Payouts](#overround-and-payouts)
- [Arbitrage Calculation](#arbitrage-calculation)
- [Kelly Criterion](#kelly-criterion)
- [Simple Parlay Bets](#simple-parlay-bets)
## Installation
Download the library using _go get_:
```
go get github.com/jsgm/go-odds
```
Import in your current repository:
```go
import (
odds "github.com/jsgm/go-odds"
)
```
## Converting odds between formats
### Data types
Each odd type will return a different data type, depending on your needs.
| Odd format | Function | Type |
| ------ | ------ | ------ |
| Moneyline | .Moneyline() | int16 |
| Indonesian | .Indonesian() | float64 |
| Malay | .Malay() | float64 |
| Decimal | .Decimal() | float64 |
| HongKong | .HongKong() | float64 |
| Implied Probability | .Probability() | float64 |
### Odds conversions
```go
o := odds.NewOdd(odds.Decimal, 1.64)
// Convert to implied probability
float := o.Probability()
```
## Overround and Payouts
```go
home, _ := odds.NewOdd(odds.Implied, 65.00) // Home odds from Implied Probability
draw, _ := odds.NewOdd(odds.Decimal, 4.00)
away, _ := odds.NewOdd(odds.Decimal, 7.00)
fmt.Println("Overround ", odds.GetOverround([]odds.Odd{home, draw, away})) // 4.285714285714278
fmt.Println("Payout ", odds.GetPayout([]odds.Odd{home, draw, away})) // 95.71428571428572
```
## Arbitrage Calculation
todo
## Kelly Criterion
Kelly Criterion is simply strategy that helps calculating the proper stake that you should wager on a particular event. This doesn't just applies to betting but also for investing and calculating risks.
- b is the multiple of the stake.
- p is the probability of winning. 70% chances of winning should be 0.7.
- q is the probability of lossing. i.e. 100% - p = 30. The value would be 0.3.
- K% is the suggested percentage of the bankroll for the event.
## Simple Parlay Bets
```go
o1, _ := odds.NewOdd(odds.Decimal, 1.25)
o2, _ := odds.NewOdd(odds.Implied, 50.7)
o3, _ := odds.NewOdd(odds.Decimal, 4.5)
multi := []odds.Odd{o1, o2, o3}
stake := 10.0
p := odds.NewParlay(multi, stake)
p.Profit() // 67.22386587771203
p.Payout() // 77.22386587771203
p.SellectionCount() // 3
p.Probability() // 12.949364663814572 (%)
```
## Round Robin
todo
## Teaser
todo