Prediction of Trend Reversals in Stock Market by Classification of Japanese Candlesticks

K-means clustering algorithm has been used to classify patterns of Japanese candlesticks which accompany the approach to trend reversals in the prices of several assets registered in the Warsaw stock exchange (GPW). It has been found that the trend reversals seem to be preceded by specific combinations of candlesticks with notable frequency. Surprisingly, the same patterns appear in both “bullish” and “bearish” trend reversals. The above findings should stimulate further studies on the problem of applicability of the so-called technical analysis in the stock markets.