NEWS

---

kedd 2.0.0 (2026-11-02)

• New bandwidth selector h.scv(): Smoothed Cross-Validation (Hall, Marron & Park 1992) with fully analytical closed-form criterion for the Gaussian kernel.
• New logistic kernel K(x) = e^{-x}/(1+e^{-x})^2, derivatives up to order 20 and exact constants R(K^(r)), in all selectors, dkde(), kernel.fun() and kernel.conv().
• New power kernel family Pow(s,t): K(x) = c(1-|x|^s)^t on [-1,1], given as kernel = "pow(s,t)" or kernel.pow(s, t), for any s > 0, t >= 0, in all selectors, dkde(), kernel.fun() and kernel.conv(). It reproduces uniform, triangular, Epanechnikov, biweight, triweight and tricube exactly.
• nthreads: 0 now always means all cores (capped by OMP_THREAD_LIMIT) and a call no longer changes the threads of later calls; h.ucv() with 0 used a single thread. dkde() and h.mlcv() now use nthreads. New Cpp_omp_threads().
• Added second author: Amel Henider.

kedd 1.0.4 (2024-02-01)

• Other minor bug fixes: R (>= 4.3.2).

kedd 1.0.3 (2015-10-31)

• Other minor bug fixes: R (>= 3.2.2).

kedd 1.0.2 (2015-01-28)

• Other minor bug fixes: R (>= 3.1.2).

kedd 1.0.1 (2014-08-18)

• Other minor bug fixes: R (>= 2.15.1).