In computer science, hill climbing is a mathematical optimization technique which belongs to the family of local search. It is an iterative algorithm that starts with an arbitrary solution to a problem, then attempts to find a better solution by incrementally changing a single element of the solution. If the change produces a better solution, an incremental change is made to the new solution, repeating until no further improvements can be found.
For example, hill climbing can be applied to the travelling salesman problem. It is easy to find an initial solution that visits all the cities but will be very poor compared to the optimal solution. The algorithm starts with such a solution and makes small improvements to it, such as switching the order in which two cities are visited. Eventually, a much shorter route is likely to be obtained.
Hill climbing is good for finding a local optimum (a solution that cannot be improved by considering a neighbouring configuration) but it is not necessarily guaranteed to find the best possible solution (the global optimum) out of all possible solutions (the search space). In convex problems, hill-climbing is optimal. Examples of algorithms that solve convex problems by hill-climbing include the simplex algorithm for linear programming and binary search.
A hill climb is a cycling event, as well as a basic skill of the sport. As events a hill climb may either be an individual time trial (which forbids cooperation, drafting, or team tactics) or a regular road race. A hill climb usually represents an event which gains altitude continuously, usually terminating at a summit. Well known hill climbs include the Mt. Evans Hill Climb and the Mount Washington Auto Road Bicycle Hillclimb. The Cycle to the Sun race is a young race run on a volcano in Maui, Hawaii. Hill climbs occasionally feature in major professional races, such as the Tour de France, but they are usually referred to as mountain time trials, and are not necessarily from the bottom to the top of a hill, although they usually are (they can simply be a time trial over hilly terrain).
In Great Britain there is an end of season tradition of cycling clubs promoting hillclimb time trials in October, for small cash prizes. The hills tend to be relatively short, usually taking between three and five minutes to complete, and the races attract many spectators, including locals not otherwise interested in cycling, who come to watch the pain in the faces of the competitors.
The Philadelphia76ers still have a steep hill to climb after their injury-riddled, dysfunction-filled, downright disastrous start to the season. But Philly looked Wednesday like the team it hoped to be after its all-in offseason ... 25 ... ....
Further, it is also seen performing a side flip in the video – standing at almost the edge of the top of a hill. It then proceeds to climb down the hill in full speed using its four limbs, balancing itself as it goes down.
His response, “Yes, it’s fantastic!” A father and daughter team begin a climb on one of the Penobscot River Trails in Grindstone... After about 3 kilometers, a spur trail on the right led me up an abrupt hill to the warming hut.
As kids growing up in Victorville, we spent many hours exploring the hills, back alleys, and especially the Mojave River, where mistletoe was abundant.Climbing trees and making money ... After climbing a ...
Not knowing if other waves would be hitting the island, the four managed to climb out of the roof and joined hundreds of locals up a hill where they stayed until nightfall ... The group climbed up a hill ...
However, after investigating over the past few days, we didn't find any of these issues," Tang said ... "I still remember during testing, we climbed to the opposite hill, manually transmitting signals to test various antenna parameters ... ....
The monthly rent for a one-bedroom apartment in the county averages $1,582, and the average wage for a renter in Carroll County is $25.40 an hour ... That’s still a steep hill to climb at a minimum wage.” ... But income is a concern ... .
One protester climbed the compound wall and started throwing tomatoes ... “Today at around 4.45 PM, some individuals holding placards rushed to the residence of actor Allu Arjun in JubileeHills and started sloganeering.
There is, for instance, my first Christmas in 1944... And now?) ... The young adventurers hurry past the structures to climb foot hills of ice piled up by plows. They shoot down slippery slopes — feet first, head first, climbing, falling, bouncing back up ... .
Six months since the spectacular blaze, officials still don’t know the cause of the massive fire that destroyed St. Anne’sAnglican Church.Advertisement 2. Story continues below ... SUBSCRIBE TO UNLOCK MORE ARTICLES ... / ... / ... This is a very big hill to climb ... .
Baltimore Sun
24 Dec 2024
Baltimore Sun
24 Dec 2024