These concepts are different to traditional technical analysis (TA), where most calculations are based on price and old concepts like Moving Averages or RSI oscillators. But there is no calculatable probability of a golden cross of Moving Averages. Even back testing will only show you the past. But you can calculate the probabilities of the distribution of log returns. Support and resistance or triangles have no statistical significance, but levels of the underlaying distribution of log returns gives probability of not exceeding a certain price level.