【金工周报】（20251208-20251212）：短期模型多大于空，后市或震荡向上-20251214

• The report discusses multiple quantitative models for market timing, including short-term, medium-term, and long-term models. These models are constructed based on principles such as price-volume relationships, momentum, and calendar effects. The short-term models include the "Volume Model," "Feature Institutional Model," and "Feature Volume Model," while medium-term models include the "Limit-Up/Down Model" and "Up/Down Return Difference Model." The long-term model is the "Long-Term Momentum Model"[8][11][12][13] - The construction process of these models involves combining signals from different time horizons and strategies. For example, the "Volume Model" evaluates market activity through trading volume, while the "Momentum Model" focuses on price trends. The "Limit-Up/Down Model" identifies market sentiment by analyzing the frequency of limit-up and limit-down events. The "Up/Down Return Difference Model" measures the difference between upward and downward returns to gauge market direction[8][11][12] - The evaluation of these models suggests that combining signals from different models enhances robustness. For instance, some models are defensive, while others are aggressive, allowing for a balanced approach. The report emphasizes that simplicity in model design often leads to better generalization and performance[8][11][12] - Backtesting results for these models indicate varying levels of effectiveness. For example, the "Long-Term Momentum Model" is currently bullish, while the "Up/Down Return Difference Model" shows a positive outlook across all broad-based indices. The "Feature Institutional Model" is bullish, whereas the "Feature Volume Model" is bearish. The "Volume Model" remains neutral across all indices[11][12][13]