PLS - neverending story, especially after vacation time. I recommend two very interesting articles for the beginning of literature digging after the vacation. Sharif et al. proposes Constrained kernelized PLS [1], whereas Dijkstra and Henseler introduce new concept to this technique - the "consistency" [2]. Indeed, interesting ideas.
References
- S. Salari Sharif, J.P. Reilly, and J.F. MacGregor, "Constrained kernelized partial least squares", Journal of Chemometrics, pp. n/a-n/a, 2014. http://dx.doi.org/10.1002/cem.2636
- T.K. Dijkstra, and J. Henseler, "Consistent and asymptotically normal PLS estimators for linear structural equations", Computational Statistics & Data Analysis, vol. 81, pp. 10-23, 2015. http://dx.doi.org/10.1016/j.csda.2014.07.008