Smart bacteria-foraging algorithm-based customized kernel support vector regression and enhanced probabilistic neural network for compaction quality assessment and control of earth-rock dam.

Compaction quality assessment and control for an earth-rock dam is the key measure to ensure dam safety. However, to date, the compaction quality assessment model has not been accurate enough, and no effective feedback control measures have been developed. Hybrid data mining algorithms have great potential for solving this problem. In this study, smart bacteria-foraging algorithm-based customized kernel support vector regression (SBFA-CKSVR) is proposed for compaction quality assessment, whereas an enhanced probabilistic neural network (EPNN) is adopted for compaction quality control. SBFA integrates a bacteria-foraging algorithm, chaos mapping, and adaptive and quantum computing to solve the high-dimensional complex problem effectively. CKSVR is proposed to approximate a function in quadratic continuous integral space L2(R) where its hyperparameters are optimized by SBFA. Finally, SBFA-CKSVR is used to establish a high-precision compaction quality assessment model whereas the EPNN is adopted to realize the compaction quality feedback control. A three-dimensional real-time monitoring system for the earth-rock dam is also developed based on SBFA-CKSVR and EPNN. A large-scale hydraulic engineering application proves the effectiveness and superiority of this research compared with the previous work.