Afroj Alam1* ([email protected])
Department of Computer Application Integral University, Lucknow(U.P) Inida, Sambhram University Jizzax Uzbekistan
Department of Computer Application Integral University, Lucknow(U.P) Inida
From past few decades, there rapid development of the advanced technology and IoT based sensor devices which resulted with an explosive growth in data generation and storage. The amount of data which is generated is constantly growing even exponential growing and thus cannot be predicted or even cannot find the hidden information traditional way. Indeed, many new applications producing this huge amount of data, especially those where users can write, upload, post and share a lot of data, information and videos, such as social media sites like Facebook, twitter, telegram, instagram where every second every minutes huge amount of image, video and data are post and shares . Accordingly, as mentioned in , it is approximately up to 45 Zeta bytes digital data we have up to 2020. In the Current information technology world, this huge amount and the massive volume of data with more attributes is called “High dimensional Big Data”. A lot of important frequent-pattern, meaningful information and valuable hidden pattern can be extracted from this huge amount of data, which help the organization for improving the business intelligence, decision-making, fraud detection etc. K-means clustering is a most important and powerful un-supervised partitioning machine learning techniques for division of this big data into homogenous group i.e. cluster .
There are lot of limitation of K-means in big and high dimensional data: it converges to the local optimal solution, no of cluster is to be defines in advance, initialization of clusters centroid, lack of quality of clusters . We have proposed a hybridized K-means with nature inspired Artificial Bee Colony global optimization algorithm that resolve the limitation of K-means clustering.
Nature inspired optimization:
There are lot of Population-based meta-heuristic Evolutionary Algorithms (EAs) global optimization algorithms which are inspired by the natural behaviour of the population evolution such as Genetic Algorithm, Artificial Bee Colony (ABC), Artificial Ant Colony and particle swarm based intelligence algorithm.
Artificial Bee Colony
ABC is a global optimization met-heuristic algorithm which is inspired by the intelligent behaviour of honey bees. This algorithm is popular due to its flexible computational time. In our proposed method we use the ABC algorithm for the initialization and selection of cluster centroids .
This algorithm is executed in 4 steps as given below:
- Employed Bee
- On-looker Bee
- Scout bees
The objective function of Artificial Bee Colony (ABC) algorithm is designed as according to the optimal number of selection of clusters for K-means.
The population of ABC is initialized by equation 1. in which i=1,2,3,…….,BN, here BN defines the total number of food sources and value of j=1,2,3,………,D. D is the number of dimensions. The upper and lower bounds of the variable j is xmin,j and xmax,j.
Updation of the bees location is as given below
In above equation r ∈ 1, 2,3, ·····,BN and j ∈ 1, 2, ·····, D are indexes and Φ is a random generated number in between [−1, 1]. If new solution is better than old solution i.e. equation (2), than old solution will replaced by new one.
The of each solution is computed by where f iti is a probability fitness value of the i th solution. If fitness of new solution is higher than old solution than old will replaced by new solution.
In our proposed methodology we hybridized the K-mean with ABC (ABK) comes up with the plan that K-means algorithm provide the new solution of scout bees in every iteration. The K-means generate the new solutions as according to the employed bee and onlooker bee steps. In this way we can get more optimized results. The new solution of K-means will be added in every iteration improve the accuracy for reaching ABC to higher level.
The new solution from the K-means is generated according to the solutions of the employed bee and the onlooker bee phases. This process may increase the chances of giving more suitable solutions for the optimization problem. The addition of new solution from K-means after every cycle may enhance the reach of ABC algorithm to a different level. Our proposed idea finds the fi values from the given below distance formula.
The fitness function is the calculated be the given equation as the sum of all the distance i values.
In the above equation the population will be survived according to the better fitness otherwise it will reject .
TABLE 1 COMPARATIVE ANALYSIS BASED ON INTRA CLUSTER DISTANCE
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