Enhancing the Performance of Entropy Algorithm using Minimum Tree in Decision Tree Classifier

Classification builds a model based on historical data (training data set). Once the model is built, it is used to predict the class for a new instance. Many methods have been proposed to solve the classification problem (referred to as classifiers); one of the most popular and best classifiers proposed so far is the decision tree classifier. Multiple trees can be generated from the same dataset, all the trees yields the same outcome for a given new instance to be classified. The possible trees for a dataset vary in their size where the size of the tree depends on the sequence in which the dataset attributes is used to build the tree. However, we prefer the minimum tree because the minimum tree needs the shortest time to figure out the outcome of the model. One of the best algorithms that have been proposed to find the sequence that yield the minimum tree if used is the entropy algorithm. We proposed in this article a new algorithm (enhanced entropy algorithm) that reduces complexity and execution time of the original entropy algorithm and at the same time yields the same sequence that can be found by applying entropy algorithm

Seven Contexts for Service System Design

Many of the most complex service systems being built and imagined today combine person-to-person encounters, technology-enhanced encounters, self-service, computational services, multi-channel, multidevice, and location-based and context-aware services. This paper examines the characteristic concerns and methods for these seven different design contexts to propose a unifying view that spans them, especially when the service-system is “information-intensive. ” A focus on the information required to perform the service, how the responsibility to provide this information is divided between the service provider and service consumer, and the patterns that govern information exchange yields a more abstract description of service encounters and outcomes. This makes it easier to see the systematic relationships among the contexts that can be exploited as design parameters or patterns, such as the substitutability of stored or contextual information for person-to-person interactions. A case study for the design of a “smart multichannel bookstore ” illustrates the use of the different design contexts as building blocks for service systems. 1