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wickra/docs/README.md
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kingchenc e385734275 feat(microstructure): trade-sign autocorrelation, PIN, Hasbrouck information share (B15) (#212)
## B15 Microstructure — three new indicators (485 → 488)

| Indicator | Input | Output | Notes |
|-----------|-------|--------|-------|
| `TradeSignAutocorrelation` | `Trade` | `f64` ∈ [-1,1] | lag-1 autocorrelation of the signed aggressor (order-flow persistence) |
| `Pin` | `Trade` | `f64` ∈ [0,1] | probability of informed trading from rolling buy/sell imbalance (EKOP single-window estimator); `name()` = `"PIN"` |
| `HasbrouckInformationShare` | `(f64, f64)` | `f64` ∈ [0,1] | variance-ratio proxy for each venue's share of price discovery |

### Wiring
- Core structs + full unit tests (every branch).
- Hand-written Python/Node/WASM bindings for the two `Trade`-input indicators (precedent `TradeImbalance`); `node_pair_indicator!` / `wasm_pair_indicator!` macro bindings + hand Python pyclass for the pairwise Hasbrouck (precedent `RollingCorrelation`).
- Fuzz drives added to `indicator_update_trade.rs` and `indicator_update_pair.rs`.
- Dedicated Python + Node streaming-vs-batch and reference tests; Hasbrouck in the `PAIR` registry.
- README counter (3 spots) + `docs/README.md` + `FAMILIES` assert bumped to 488.

### Verify (all green, local)
- `cargo test -p wickra-core --lib`: 3991 passed
- `cargo test -p wickra-core --doc`: 438 passed
- `cargo clippy --workspace --all-targets --all-features -- -D warnings`: clean
- node: 561 passed · pytest: 926 passed
2026-06-08 03:07:50 +02:00

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# Documentation
Wickra's full documentation lives at **[docs.wickra.org](https://docs.wickra.org)**.
That includes:
- **Quickstarts** for [Rust](https://docs.wickra.org/Quickstart-Rust),
[Python](https://docs.wickra.org/Quickstart-Python),
[Node](https://docs.wickra.org/Quickstart-Node), and
[WASM](https://docs.wickra.org/Quickstart-WASM).
- A per-indicator deep dive for every one of the **488 indicators** across
the sixteen families (Moving Averages, Momentum Oscillators, Trend &
Directional, Price Oscillators, Volatility & Bands, Bands & Channels,
Trailing Stops, Volume, Price Statistics, Ehlers / Cycle DSP, Pivots &
S/R, DeMark, Ichimoku & Charts, Candlestick Patterns, Market Profile,
Risk / Performance) — see the
[indicators overview](https://docs.wickra.org/Indicators-Overview).
- **Reference pages**: [warmup periods](https://docs.wickra.org/Warmup-Periods),
[streaming vs batch](https://docs.wickra.org/Streaming-vs-Batch),
[indicator chaining](https://docs.wickra.org/Indicator-Chaining), and the
[data layer](https://docs.wickra.org/Data-Layer).
- **Guides**: [Cookbook](https://docs.wickra.org/Cookbook),
[TA-Lib migration](https://docs.wickra.org/TA-Lib-Migration),
[FAQ](https://docs.wickra.org/FAQ).
## Editing the docs
The documentation site is a separate git repository at
`https://github.com/wickra-lib/wickra-docs`. Open a pull request there to
propose changes; the site is built with VitePress and deploys to
`docs.wickra.org`.