Big Data concerns massive, heterogeneous, autonomous sources with distributed and decentralized control. These characteristics make it an extreme challenge for organizations using traditional data management mechanism to store and process these huge datasets. It is required to define a new paradigm and re-evaluate current system to manage and process Big Data. In this paper, the important characteristics, issues and challenges related to Big Data management has been explored. Various open source Big Data analytics frameworks that deal with Big Data analytics workloads have been discussed. Comparative study between the given frameworks and suitability of the same has been proposed.
Bitcoin has recently got broad interest due to its continuous appreciation. This paper presents that Bitcoin is far enough to affect the status of the RMB based on the analysis of Bitcoin's credit rating and trading patterns. Bitcoin will neither change the number of the RMB nor impact China's financial system,but Bitcoin needs to be guarded against the risk of investment.
With the continuous development of computer networks, Bitcoin becomes a kind of popular virtual currency. Though expounding the concept and features of the Bitcoin, this paper analyzes the monetary functions and risks of Bitcoin and the various countries' attitude to Bitcoin. At the same time, it puts forward the related policy suggestions.
Bitcoin has experienced such three stages as mininggame interior testing stage oriented by the demand of technical share revision,the business model construction stage oriented by investment demand and market bubble showcase stage oriented by the speculative demand since 2009 when Bitcoin produced,and has formed a global market to exchange Bitcoin. As a product of virtual financial market,Bitcoin market development is propelled by human spontaneousness and human oriented demand,however,the market craziness triggered by speculative demand not only damages the interests of the investors but also impedes the self-development of Bitcoin market. Bitcoin,which does not belong to the currency in real sense,has long-term development basis by widening and consolidating basic service function of network payment,but its value stability can not be maintained for a long time. Bitcoin,as a virtual currency,largely deviates from its intrinsic value in its market price currently,has big bubble,as a result,the investment or speculation on Bitcoin is the worst choice,therefore,China must make effective supervision on Bitcoin market and actively guide and broaden the channel for private capital to invest.
All bettors, including the ???House,??? experience losing streaks and winning streaks. The House typically has a ???bankroll??? that is orders of magnitude larger than that of any individual bettor, and so can survive losing streaks without going bankrupt, thus remaining solvent long enough to win. Online wagering provides a new twist to this age-old scenario. We use elementary mathematical principles together with the idea of a virtual infinite sample size and the elimination of time as a constraint to develop a fail-proof system that generates the greatest possible exponential growth of capital. Let ?? (stake) be the amount you wish to invest or wager each time and ?? (return) be your return or odds on a proposition. Let n (number) be the sum of consecutive loosing investments or number of times you can loose on an identical proposition before depleting a specified amount of investment capital called ?? ( bankroll). The resultant equation, which I call the: Investment Betters Algorithm (click on thesis to view) \nprovides the answer to remaining solvent long enough to outlast the irrationality of the simulated online ??? wagers open market ??? through a geometric progression. The augmented bankroll ?? , calculated slightly higher than the typical sum of the Geometric Series, can serve as a safeguard to capital ruin by it extreme disproportion to. Consider further the expected value of even money propositions, a virtual infinite sample size, and the elimination of time as a constraint and you have a no fail system to generate the greatest progressive exponential growth of capital. Current problems associated with financial return optimization algorithms are identified and discussed. Probable solutions to those problems are also prescribed along with improvements to diversified portfolio design.