Analyzing survival of technological convergences in hydrogen energy
Won Sang Lee
Recently, hydrogen energy has been increasingly considered for decarbonization, and it could drive technological convergence in diverse areas. This study examines technological convergence in hydrogen energy and analyzes how technological characteristics are associated with survival using triadic patent data. FP-growth, an association rule mining technique, identifies convergent patterns of hydrogen energy technology. Then, a causal survival forest model is applied to estimate heterogeneous trea