The prior post built a single-neuron model — three weights, a bias, and a sigmoid that turned a weighted sum into P(up). It worked, but its limits were architectural: a single neuron can only carve the feature space with a straight line. Any pattern that requires the features to interact non-linearly — “high distFromMa AND…
Most oscillators give you one line that swings around a midpoint. The Andean Oscillator by alexgrover takes a different approach — it computes two lines, one tracking bull strength and one tracking bear strength, and lets the relationship between them tell you the regime. The math underneath is online recursive envelopes: instead of computing a…
A three-property indicator fits fine in NinjaTrader’s default “Parameters” bucket. A fifteen-property indicator doesn’t. Once an indicator has ATR inputs, confirmation thresholds, display toggles, color choices, and alert settings, the property grid needs real structure — otherwise users scroll past the setting they actually wanted to change. Last week’s post introduced [Display(GroupName, Order)] and [Gui.CategoryOrder]….
The k-Nearest Neighbors post introduced one half of supervised learning: memorizing models that hold onto every historical bar and search through them at prediction time. This post is the other half. Instead of remembering every example, an online-learning model carries a small set of weights — three numbers, plus a bias term, in this case…
Most trend indicators give you a binary answer: up or down, with maybe a third ‘neutral’ state. That’s useful — but it throws away the most actionable piece of information, which is how confident the indicator is in that call. ChartPrime’s Bayesian Trend Indicator reframes the question as a probability: given the last N bars…
A property’s C# identifier isn’t always what you want users to see in the indicator settings dialog. Period reads fine; atrPeriodLookback looks like a raw variable name. The [Display] attribute lets you set a friendlier label, add a tooltip, group related properties together, and control the order they appear. Four parameters cover almost all of…
Search TradingView’s community scripts for terms like “machine learning” or “AI” and you’ll find a long list of community-built indicators that lean on one of the simplest and oldest algorithms in ML. k-Nearest Neighbors — the algorithm we’re building from scratch in NinjaScript today — dates to the 1950s and remains one of the most…
The original Williams Vix Fix is one of the cleverest technical indicators ever published — it reverse-engineers the VIX’s bottom-finding behavior and applies it to instruments that don’t have a real VIX. Larry Williams built it so traders could spot capitulation bottoms in stocks, futures, and forex using volatility-of-range math instead of options-derived volatility. ChrisMoody’s…
You wrote an indicator. It works great on a chart. Now you want to use it from a strategy — you write var sma = MySma(20); in State.DataLoaded and expect the cross-script reference to just work. Or you want to optimize Period in Strategy Analyzer and see which value produces the best backtest. How does…
In 1956 Nicolas Darvas was a 35-year-old ballroom dancer touring the world. He didn’t have a Bloomberg terminal, a screener, a chat room, or electronic trading charts. He had cabled stock quotes sent to his hotels in Tokyo, Saigon, and Hong Kong, and a few notebooks. By 1958 he had turned about $36,000 into more…
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