minor changes

minor changes

eval tree params

Add ploting dynamic bandwidth

Update with eval tp&galaxy

Add galaxy test

Fix and test GALAXY with example: pass

Run with galaxy; TODO: check accuracy

Update with galaxy skeleton

Fix tree expansion done; TODO: further optimization for expansion

Update debugging: fix score sorting for the same score of parent-child nodes

Update: debugging tree expansion

minor changes

zmq for comm and simple testing

Update comm with zmq