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Twitter modelo de pagina de fa assista ao video

December 3, 2015 Comments (0)

Conseguir seguidores no Twitter se transformou em um benquisto resoluç ã o para Vendedores, meninas juntamente com influenciadores para construir pró prio field de visã o e reconhecimento sobre Twitter. Com relaç ã o a 28% ter que fazer com ter comprado seguidores adicionalmente , o nú meros de telefone expandindo. Você para se tornar omitido? Nó s dar uma olhada este especí fico nicho, exame transportadores e fornecer maioria...

Professional editing services browse around this site

December 1, 2015 Comments (0)

Your provider are provided just by qualified copy writers who? Re proficient in several different studies people and simply subject areas. Additionally to eating aware researchers create developer petition, we provide you with the right sort of benefits to supercharge your understanding of us. Produced by papers, dissertations, accounts along with traditions documents, everyone is appropriate create top notch data when all your get. It is possible to try to ask many companies to finally "write...

Flash Boys and Investors

June 18, 2014 Comments (0)

How does technology impact the electronic exchange of assets, and how does this advancement impact the individual investor? I spend a few minutes discussing high-frequency trading, then consider it's impact on the typical individual investor, and finally imagine where electronic trading is moving in the long run (hint: towards greater efficiency). In general, my hope is that the public should become more informed about market efficiency and the benefits of diversified portfolios, rather...

Stream Processing with Messaging Systems

May 28, 2014 Comments (0)

Stream processing involves taking a stream of messages and running a computation on each message. How can we manage high throughput given a large number of messages and potentially complicated computations? Messaging systems (EMS) are middleware which serve to pass messages reliably from one process to another providing a means for asynchronous communication, which means that processes are not blocked from operating to wait while another process is running (data is not synchronized between the...

A general introduction to stream processing

May 19, 2014 Comments (0)

The topic of "real-time computing" (RTC) has grown substantially both in substance and popularity over the past few years alongside the rise of big data and data science. The related topic of data stream mining uses real-time computing to derive information from streams of data. This places additional focus on the end-to-end latency and robustness of the systems, and thus requires streaming algorithms. What is real-time computing? A system is said to be real-time if the total correctness of...

Upcoming New York Data Events (Summer, 2014)

May 15, 2014 Comments (0)

I'm going to be in NYC for the summer, so I was interested to know whether there are any events worth attending: @statalgo I am sure you know this, but KDD is in NYC this year — Drew Conway (@drewconway) May 13, 2014 It turns out that there is an embarrassment of riches from two major data conferences: KDD is in NYC this year, from August 24-27, 2014. DataGotham is taking place on September 26, 2014. Proposals must be submitted by Saturday, May 17, 2014....

Reinforcement Learning in R: Markov Decision Process (MDP) and Value Iteration

January 6, 2014 Comments (0)

How can we find the best long-term plan? In the last post, we looked at the idea of dynamic programming, where a problem is divided into overlapping parts, each part is solved independently, and then aggregated back up into a global solution. This is one of the most basic and widely used methods for solving problems that involve optimal long-term planning.  I am emphasizing the long-term part because typical machine learning or statistical models consider the optimal solution to the current...

Reinforcement Learning in R: An Introduction to Dynamic Programming

October 29, 2012 Comments (0)

Reinforcement Learning is an approach to learning that attempts to maximize a cumulative reward based on a set of actions and states. The techniques are very popular within operations research and control theory. It does not fall under the traditional paradigms of supervised or unsupervised learning because correct inputs/outputs are never provided. The algorithm is instead presented with some notion of doing well or poorly at each step. There are several different methods for optimizing a...

Market Microstructure 3: The Roll Model (1984)

October 7, 2012 Comments (0)

As in Hasbrouck (2007), we continue our series on Market Microstructure with a simple theoretical model of bid/ask prices: the Roll model. Richard Roll (faculty page) developed the model in "A simple implicit measure of the e!ective bid-ask spread" (1984). This paper presents a method for inferring the effective bid-ask spread directly from a time series of market prices. The method requires no data other than the prices themselves... We start by making the following simplifying assumptions:...

Market Microstructure 2: An Overview

August 5, 2012 Comments (0)

What is market microstructure? Market microstructure is about the fundamental forces involved in market exchange. Economics and finance tends to abstract itself away from the underlying details of trading and exchange, but market microstructure puts these details at the center of the analysis, and investigates how these change the basic supply and demand interactions. In short, market microstructure aims to understand the foundations of markets. It is concerned with (1) market structure and...