Subscribe to DSC Newsletter

All Blog Posts Tagged 'Analysis' (46)

Parameter Selection in Classification for Financial Market

In practice, we often have to make parameterization choices for a given classifier in order to achieve optimal classification performances; just to name a few examples:

  • Neural Network: e.g., the optimal choice of Activation Functions, # of hidden units
  • Support Vector Machine: e.g., the optimal choice of Kernel Functions
  • Ensemble: e.g., the number of Learning Cycles for Bagging.
  • Discriminant Analysis: e.g., Linear/Quadratic; regularization…
Continue

Added by Zhongmin Luo on May 29, 2017 at 12:49am — No Comments

Power Up Your Predictions with Plug n' Play Predictive Analysis

To be successful in business, every organization must find a way to accurately forecast and predict the future of its market, and its internal operations, and better understand the buying behavior of its customers and prospects. To accurately predict and plan, every enterprise must select a business intelligence solution that will support their efforts and provide business…

Continue

Added by Arbuda Dave on May 24, 2017 at 2:30am — No Comments

Apply Machine Learning Techniques to Problems in Financial Market

Past literature show that the comparisons of classifier's performance are specific to the types of datasets (e.g., Pharmaceutical industry data) used; i.e., some classifiers may perform better in some context than others. A paper titled CDS Rate Construction Methods by Machine Learning Techniques conducts the performance comparison exclusively in the context of financial market by applying a wide range of classifiers to provide solution to so-called Shortage of…

Continue

Added by Zhongmin Luo on May 23, 2017 at 1:30am — No Comments

Variable Reduction: An art as well as Science

Variable reduction is a crucial step for accelerating model building without losing the potential predictive power of the data. With the advent of Big Data and sophisticated data mining techniques, the number of variables encountered is often tremendous making variable selection or dimension reduction techniques imperative to produce models with acceptable accuracy and generalization. The temptation to build an ecological model using all available information (i.e., all variables) is hard to…

Continue

Added by Valiance Solutions on April 21, 2017 at 9:20pm — No Comments

Where There Are Numbers, There Is Box Plot

Multiple numeric columns in data and even more techniques at hand to analyse the data, like histograms, ANOVA, mean/median, contingency tables, scatter plots, variance…what to choose for exploratory or descriptive analytics!

Sounds a bit geeky! Let me simplify

This is an everyday scenario faced by an analyst. There are too many numbers and challenge is to communicate the scenario to business folks. Whether its competitive analysis, internal sales analysis,…

Continue

Added by saurabh ajmera on March 31, 2017 at 6:00am — No Comments

The Most Common Analytical and Statistical Mistakes

It is not only about understanding about statistics, it is also about implementing the correct statistical approach or method. In this brief article I will showcase some common statistical blunders that we generally make and how to avoid them.

To make this information simple and consumable I have divided these errors into two parts:

  1. Data Visualization Errors (Erroneous Graphs)
  2. Statistical Blunders Galore (pun intended)

 

Data…

Continue

Added by Sunil Kappal on January 3, 2017 at 7:00am — 4 Comments

A Statistical Approach to Pick the Most Impactful Advertising Channel for Product Marketing

In the wake of ZMOT (Zero Moment of Truth) it becomes pivotal for any product company to choose the most appropriate advertisement channel for the promotion of their products. This not only helps the organizations to maximize their chances of creating the best first impression but will also help them to be discovered by today’s tech savvy consumers.

Today we will talk about a very…

Continue

Added by Sunil Kappal on December 30, 2016 at 8:30am — No Comments

Naive Bayes Process At a Glance

Added by Sunil Kappal on December 27, 2016 at 7:00am — No Comments

A Data Professional's Role as an Educator

Anyone who has followed that last few presidential elections has seen how easily data can go from a hero to a zero. Nate Silver was a genius when his model and analysis successfully predicted Obama's electoral wins with great precision in 2008 and 2012. However, after the 2016 election, Mr. Silver and the value of data fell precipitously from grace in the eyes of political pundits and many voters.

Those of us who know better, well... know better. The problem wasn't with the data or…

Continue

Added by Ray Hall on December 23, 2016 at 11:00am — 4 Comments

Marketing & Advertising: Stats and Data Analysis

With marketing and advertising gaining more space on the internet, big data analytics are playing a prominent role in following the trends on the market and providing users with key statistics.

Data analysis and statistics traditionally play an important role in analyzing the success of companies and brands in the market.

The growth of internet…

Continue

Added by Diana Beyer on July 26, 2016 at 12:00am — No Comments

Data says FC Barcelona is still the best team in Spain

Tableau explain why FC Barcelona is still the best team in Spain (and the whole World)

Introduction Football Club Barcelona, also known as Barça is a professional football club, based in Barcelona, Catalonia, Spain. Founded in 1899 by a group of Swiss, English and Catalan footballers led by Joan Gamper, the…
Continue

Added by Besim Ismaili on June 1, 2016 at 3:00am — No Comments

San Francisco Police Department Crime Incidents: Part 1-Time Series Analysis

Introduction



The City and County of San Francisco had launched an official open data portal called SF OpenData in 2009 as a product of its official open data program, DataSF. The portal contains hundreds of city datasets for use by developers, analysts, residents and more. Under the category of Public Safety, the portal contains the list of SFPD Incidents since Jan 1, 2003.

In this post I have done an exploratory time-series analysis on the crime incidents dataset to see…

Continue

Added by Vimal Natarajan on May 30, 2016 at 7:42am — No Comments

Global Big Data Market Expands with Expeditious Data Generation across Businesses

Big data is the humongous amount of information, both structured and unstructured, that is generated from everyday functioning of various sectors across all walks of life. The high volume of big data generated across the world has necessitated the development of technological tools that can make this information utilizable. These tools have taken many form, from the previously used SQL (structured query language) to advanced DBMS (data base management systems). Hadoop is the newest and most…

Continue

Added by Ankit Jain on March 8, 2016 at 9:00pm — No Comments

The Naive Bayes Classifier explained

Reading the academic literature Text Analytics seems difficult. However, applying it in practice has shown us that Text Classification is much easier than it looks. Most of the Classifiers consist of only a few lines of code.In this three-part blog series we will examine the three well-known Classifiers; the Naive Bayes, Maximum Entropy and Support Vector Machines. From the…

Continue

Added by Ahmet Taspinar on February 15, 2016 at 10:00pm — No Comments

Relax: Automation isn't coming for your job

Relax: Automation isn't coming for your job

By Justin Tenuto

For the past few years, the drumbeat of think pieces about automation taking your job–yes,your job–has gotten both louder and more incessant. Smart people like the folks at …

Continue

Added by Leena Kamath on February 8, 2016 at 9:41am — 1 Comment

Big Data Analytics: From Ugly Duckling to Beautiful Swan

Recently, I came across with an interesting book on the statistics which has a narration of Ugly Duckling story and correlation of this story with today's DATA or rather BIG DATA ANALYTICS world. This story originally from famous storyteller Hans Christian Andersen

Story goes like this... 

The duckling was a big ugly grey bird, so ugly that even a dog would not bite him. The poor duckling…

Continue

Added by Manish Bhoge on January 31, 2016 at 12:00pm — No Comments

All About Data Science And Big Data

Data Science is the system used to extract insights from data that’s mined from various sources. Using various techniques including predictive modeling, Data Science helps to analyze and interpret vast amounts of data. The people who apply Data Science to manage large amounts of data are called Data Scientists. Let’s see how Data Science correlates with the…

Continue

Added by Vaishnavi Agrawal on January 8, 2016 at 11:30pm — No Comments

Measuring Cloud Oktas from Outer Space

This article describes the approach undertaken by data scientists at Axibase to calculate the Cloud Cover using satellite imagery from the Japanese Himawari 8 satellite.

Today, cloud cover is measured using automated weather stations, specifically the ceilometer and the sky imager instruments. The ceilometer is an upward pointed laser that calculates the time required for the laser to reflect from the clouds, determining the height of the cloud base.…

Continue

Added by Axibase Corp on October 20, 2015 at 6:21am — No Comments

Social Network Analysis reveals the alternative list of global power elite

Forbes magazine has been publishing the list of The World's Most Powerful People since 2009. The number of people in the list is proportional to the global population with the ratio being one slot for every 100 million people on Earth. When the list started in 2009, there were 67 people on the list and the latest list from year 2014 had 72 people. According for…

Continue

Added by Dr. Jai Ganesh on September 9, 2015 at 2:10am — 1 Comment

Naive Bayes for Dummies; A Simple Explanation

This blog post was originally published as part of an ongoing series, "Popular Algorithms Explained in Simple English" on the AYLIEN Text Analysis Blog.

Picture added by the…

Continue

Added by Mike Waldron on June 8, 2015 at 1:00am — 2 Comments

Monthly Archives

2019

2018

2017

2016

2015

2014

2013

2012

2011

1999

Videos

  • Add Videos
  • View All

© 2019   Data Science Central ®   Powered by

Badges  |  Report an Issue  |  Privacy Policy  |  Terms of Service