4 Kinds of Survey Error: Sampling, Measurement, Coverage and Non-Response

1. Sampling Error.   Sampling error is essentially the degree to which a survey statistic differs from its “true” value due to the fact that the survey was conducted among only one of many possible survey samples.  It is a degree of uncertainty that we are willing to live with.  Even most non-researchers have a … Continue reading 4 Kinds of Survey Error: Sampling, Measurement, Coverage and Non-Response

Business Intelligence vs Business Analysis vs Machine Learning

Imagine that you are running a fruit store. You start by hiring someone to keep track of the stock level, profit and loss, top-selling fruits, and churn out reports. That’s Business Intelligence (BI), where you care about an accurate account of what happened and what’s going on in your business. You then hire someone to take a look at the reports and work … Continue reading Business Intelligence vs Business Analysis vs Machine Learning

Virtual Data Scientist

A Sydney-based start-up, which has created an artificial intelligence virtual data scientist to answer questions about information in corporate systems, has signed on financial services giants Westpac and IAG as customers and closed its first funding round. Hyper Anna is best described as being like Apple's Siri or Microsoft's Cortana virtual assistants, sat over the … Continue reading Virtual Data Scientist

An exclusive inside look at how artificial intelligence and machine learning work at Apple

On July 30, 2014, Siri had a brain transplant. Three years earlier, Apple had been the first major tech company to integrate a smart assistant into its operating system. Siri was the company’s adaptation of a standalone app it had purchased, along with the team that created it, in 2010. Initial reviews were ecstatic, but … Continue reading An exclusive inside look at how artificial intelligence and machine learning work at Apple

Will the Real Data Scientists Please Stand Up?

The types of Data Scientists going around. No offence meant, all types play a crucial role in their own way.   Theorists What they Do: The word "theory" itself can mean many things to many people. Generally, in the machine learning community, theorists are computer scientists, mathematicians, and statisticians, who primarily study algorithms that are … Continue reading Will the Real Data Scientists Please Stand Up?

Why is accessing RAM always faster than accessing Hard Drive?

This is a combination from a  bunch of answers provided on https://hashnode.com/post/why-is-accessing-ram-always-faster-than-accessing-hard-drive-cijp7id47036t0f53sc3yq6dg   Answer 1 The easy version: HDD is relatively far away from the CPU, connected to system logic board via a somewhat slow SATA connection. SATA 6GB/s is the current standard. HDD's can only read or write but not both at the same time. … Continue reading Why is accessing RAM always faster than accessing Hard Drive?