# Laguerre RSI (LRSI)

> QuantNexus indicator page for Laguerre-based momentum.

**Route**: `/quantnexus/indicators/lrsi/`

## What It Does

LRSI is a Laguerre-filtered oscillator that behaves like an RSI variant with faster regime shifts and smoother swings.

## Formula

LRSI uses a four-stage Laguerre recursion driven by `gamma` and normalizes the result into an oscillator between `0` and `1`.

## Parameters

- `period` - default `6`
- `gamma` - default `0.5`

## C++23 API

```cpp
#include <nonabt/indicators/lrsi.hpp>
auto lrsi = std::make_unique<nonabt::LRSI>(data().close(), 6, 0.5);
```

## Common Usage

- Treat readings near `1.0` as bullish and near `0.0` as bearish.
- Use the midpoint as a regime switch or confirmation line.
- Pair with Laguerre Filter or price structure for tighter timing.