Sufficiency and duality for a nonsmooth vector optimization problem with generalized $\alpha$-$d_{I}$-type-I univexity over cones

‎In this paper‎, ‎using Clarkeʹs generalized directional derivative and $d_{I}$-invexity‎, ‎we introduce new concepts of nonsmooth $K$-$\alpha$-$d_{I}$-invex and generalized type I univex functions over cones for a nonsmooth vector optimization problem with cone constraints‎. ‎We obtain some sufficient optimality conditions and Mond-Weir type duality results under the foresaid generalized invexity and type I‎ ‎cone-univexity assumptions‎.