Social media advancements and the rapid increase in volume and complexity of data generated by Internet services are becoming challenging not only technologically, but also in terms of application areas. Performance and availability of data processing are critical factors that need to be evaluated since conventional data processing mechanisms may hadoop application architectures o reilly pdf provide adequate support.
Apache Hadoop with Mahout is a framework to storage and process data at large-scale, including different tools to distribute processing. It has been considered an effective tool currently used by both small and large businesses and corporations, like Google and Facebook, but also public and private healthcare institutions. Given its recent emergence and the increasing complexity of the associated technological issues, a variety of holistic framework solutions have been put forward for each specific application. In this work, we propose a generic functional architecture with Apache Hadoop framework and Mahout for handling, storing and analyzing big data that can be used in different scenarios.
To demonstrate its value, we will show its features, advantages and applications on health Twitter data. We show that big health social data can generate important information, valuable both for common users and practitioners. Preliminary results of data analysis on Twitter health data using Apache Hadoop demonstrate the potential of the combination of these technologies. Peer-review under responsibility of SciKA – Association for Promotion and Dissemination of Scientific Knowledge.
The rapid and extensive pervasion of information through the web has enhanced the diffusion of a huge amount of unstructured natural language textual resources. A great interest has arisen in the last decade for discovering, accessing and sharing such a vast source of knowledge. For this reason, processing very large data volumes in a reasonable time frame is becoming a major challenge and a crucial requirement for many commercial and research fields. Distributed systems, computer clusters and parallel computing paradigms have been increasingly applied in the recent years, since they introduced significant improvements for computing performance in data-intensive contexts, such as Big Data mining and analysis.
This paper presents a distributed framework for crawling web documents and running Natural Language Processing tasks in a parallel fashion. A validation is also offered in using the solution for extracting keywords and keyphrase from web documents in a multi-node Hadoop cluster. Evaluation of performance scalability has been conducted against a real corpus of web pages and documents. Check if you have access through your login credentials or your institution. This article is about large collections of data. There are five dimensions to big data known as Volume, Variety, Velocity and the recently added Veracity and Value. There is little doubt that the quantities of data now available are indeed large, but that’s not the most relevant characteristic of this new data ecosystem.
Analysis of data sets can find new correlations to “spot business trends, prevent diseases, combat crime and so on. By 2025, IDC predicts there will be 163 zettabytes of data. One question for large enterprises is determining who should own big-data initiatives that affect the entire organization. What counts as “big data” varies depending on the capabilities of the users and their tools, and expanding capabilities make big data a moving target. For some organizations, facing hundreds of gigabytes of data for the first time may trigger a need to reconsider data management options.
For others, it may take tens or hundreds of terabytes before data size becomes a significant consideration. Visualization created by IBM of daily Wikipedia edits . Wikipedia are an example of big data. Big Data philosophy encompasses unstructured, semi-structured and structured data, however the main focus is on unstructured data. Big data requires a set of techniques and technologies with new forms of integration to reveal insights from datasets that are diverse, complex, and of a massive scale.
A consensual definition that states that “Big Data represents the Information assets characterized by such a High Volume, Velocity and Variety to require specific Technology and Analytical Methods for its transformation into Value”. The quantity of generated and stored data. The size of the data determines the value and potential insight- and whether it can actually be considered big data or not. The type and nature of the data. This helps people who analyze it to effectively use the resulting insight. In this context, the speed at which the data is generated and processed to meet the demands and challenges that lie in the path of growth and development.
Inconsistency of the data set can hamper processes to handle and manage it. For example, to manage a factory one must consider both visible and invisible issues with various components. Information generation algorithms must detect and address invisible issues such as machine degradation, component wear, etc. Big data repositories have existed in many forms, often built by corporations with a special need. Commercial vendors historically offered parallel database management systems for big data beginning in the 1990s. Teradata systems were the first to store and analyze 1 terabyte of data in 1992.