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Add resources explaining LR, change param names for faster understanding #12

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Update README.md
olso Dec 29, 2019
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olso Dec 29, 2019
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10 changes: 7 additions & 3 deletions README.md
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Expand Up @@ -41,7 +41,7 @@ function NanoNeuron(w, b) {
}
```

_(...wait... [linear regression](https://en.wikipedia.org/wiki/Linear_regression) is it you?)_ 🧐
_(...wait... [linear regression](https://en.wikipedia.org/wiki/Linear_regression), [eli5 linear regression](https://simple.wikipedia.org/wiki/Linear_regression), [linear regression in 8 video minutes](https://www.youtube.com/watch?v=KsVBBJRb9TE) is it you?)_ 🧐

### Celsius to Fahrenheit conversion

Expand Down Expand Up @@ -111,8 +111,12 @@ This is a simple difference between two values. The closer the values are to eac
The cost function in this case will be as simple as:

```javascript
function predictionCost(y, prediction) {
return (y - prediction) ** 2 / 2; // i.e. -> 235.6
/**
* if y=33.8 and yPredicted=33.95; then cost=0.0128 -> low = good
* if y=33.8 and yPredicted=459.1; then cost=90 440 -> high = bad
*/
function predictionCost(y, yPredicted) {
return (y - yPredicted) ** 2 / 2; // i.e. -> 235.6
}
```

Expand Down