419 search results for "market research"

Economist Liquidity Index

June 7, 2016
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Economist Liquidity Index

IntroductionA typical article that discusses economics is awash with words that allude economics connection with water or a liquid. For Example: Markets get saturated when a competing country dumps its products on them Stock prices can get frothy and might develop into a bubble A credit squeeze will dampen expectations and sink prices People often talk of...

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Building the Data Matrix for the Task at Hand and Analyzing Jointly the Resulting Rows and Columns

June 5, 2016
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Building the Data Matrix for the Task at Hand and Analyzing Jointly the Resulting Rows and Columns

Someone decided what data ought to go into the matrix. They placed the objects of interest in the rows and the features that differentiate among those objects into the columns. Decisions were made either to collect information or to store what was gathered for other purposes (e.g., data mining).A set of mutually constraining choices...

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Curated list of R tutorials for Data Science

June 3, 2016
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Curated list of R tutorials for Data Science

Here is topic wise list of R tutorials for Data Science, Time Series Analysis, Natural Language Processing and Machine Learning. This list also serves as a reference guide for several common data analysis tasks. The R Language Awesome-R Repository on GitHub R Reference Card: Cheatsheet R bloggers: blog aggregator R Resources on GitHub Awesome R

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Happy New Year, Mr. President. Data and Sentiment Analysis of Presidential New Year Speeches

May 31, 2016
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Happy New Year, Mr. President. Data and Sentiment Analysis of Presidential New Year Speeches

Salvino A. Salvaggio At a moment where many are preparing for the December 31st evening cocktail, the End of Year speech of the President of the Italian Republic is broadcast right on time at 8:30pm. A tradition which came to be with the constitutional establishment...

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DH Box – Digital Humanities Virtual Workbench

May 26, 2016
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DH Box – Digital Humanities Virtual Workbench

As well as offering digital application shelves, should libraries offer, or act as instituional sponsors of, digital workbenches? I’ve previously blogged about things like SageMathCloud, and application based learning environment, and the IBM Data Scientist Workbench, and today came across another example: DHBox, CUNY’s digital humanities lab in the cloud (wiki), which looks like it

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Create Amazing Looking Backtests With This One Wrong–I Mean Weird–Trick! (And Some Troubling Logical Invest Results)

April 22, 2016
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Create Amazing Looking Backtests With This One Wrong–I Mean Weird–Trick! (And Some Troubling Logical Invest Results)

This post will outline an easy-to-make mistake in writing vectorized backtests–namely in using a signal obtained at the end of … Continue reading →

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Clandestine DNS lookups with gdns

April 10, 2016
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Clandestine DNS lookups with gdns

Google recently announced their DNS-over-HTTPS API, which “enhances privacy and security between a client and a recursive resolver, and complements DNSSEC to provide end-to-end authenticated DNS lookups”. The REST API they provided was pretty simple to wrap into a package and I tossed in some SPF functions that I had lying around to bulk it... Continue reading →

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AirbnB uses R to scale data science

April 5, 2016
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AirbnB uses R to scale data science

Airbnb, the property-rental marketplace that helps you find a place to stay when you're travelling, uses R to scale data science. Airbnb is a famously data-driven company, and has recently gone through a period of rapid growth. To accommodate the influx of data scientists (80% of whom are proficient in R, and 64% use R as their primary data...

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When Choice Modeling Paradigms Collide: Features Presented versus Features Perceived

April 3, 2016
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When Choice Modeling Paradigms Collide: Features Presented versus Features Perceived

What is the value of a product feature? Within a market-based paradigm, the answer is the difference between revenues with and without the feature. A product can be decomposed into its features, each feature can be assigned a monetary value by includin...

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Understanding Statistical Models Through the Datasets They Seek to Explain: Choice Modeling vs. Neural Networks

March 21, 2016
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Understanding Statistical Models Through the Datasets They Seek to Explain: Choice Modeling vs. Neural Networks

R may be the lingua franca, yet many of the packages within the R library seem to be written in different languages. We can follow the R code because we know how to program but still feel that we have missed something in the translation.R provides an o...

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