Abstract - Over the past decade ensemble selection has been proposed as an "overproduce and select" method for constructing ensemble classifiers from simpler individual classifiers. Many prior research papers suggest using the top performing 10%-20% of classifiers in an ensemble. In this paper, we simulate a duel between the top performing (strong)
X% of classifiers and the bottom performing (100íX)% (e.g. the top 20% versus the bottom 80%). We propose an ensemble selection algorithm that can effectively use them to construct much stronger classifiers, and apply the algorithm to find the best ensemble (of top performing classifiers as well as of bottom performing classifiers). We also show that using the bottom performing classifiers can yield comparable and sometimes better performance. Furthermore the bottom classifiers can outperform top classifiers for many different values of X, and in some cases all values of X. Our algorithm is based on heuristic search algorithms for developing ensembles of diverse classifiers that optimize complementarity.
Shortly after the turn of the century, Quincy residents who needed a loan had one place to turn, Quincy State Bank. Its president, Mark W. "Pat" Munroe, made no bones about it: Applications would get his special blessing if some of the money was used to buy stock in the new Coca-Cola company.
Munroe's motives are unclear. The results are not.
Reluctantly or otherwise, townspeople at one point owned more than 65% of Coke's stock. Munroe's "strong-arm" financial planning turned 24 of them into millionaires long before World War II and made Quincy for a while the richest town per capita in the nation. That was a blessing when the area's main industry, shade tobacco (the leaves used to make the outer wrapper of a cigar), bailed out in the 1960s in favor of cheaper labor and quarters. Coke's influence remains in Quincy's architecture and independence. Tobacco's departure didn't have nearly the impact it had on nearby Havana, which had to scrape to survive. In the past decade, however, this hamlet named for the Cuban capital has been reborn as one of the largest antique centers in the Southeast and the home of a blossoming artists' colony. Many of its shops have settled in restored, red-brick tobacco warehouses and auto dealerships left over from its heyday. These, with its narrow tree-lined streets, have led to a colorful and continuing renaissance.