Occam's Razor

SEPTEMBER 19, 2011

This: You understand all the environmental variables currently in play, you carefully choose more than one group of "like type" subjects, you expose them to a different mix of media, measure differences in outcomes, prove / disprove your hypothesis (DO FACEBOOK NOW!!!), The nice thing is that you can also test that!

Measurement 120

Measurement Advertising Testing Marketing 120

DataKitchen

MAY 10, 2021

Some will argue that observability is nothing more than testing and monitoring applications using tests, metrics, logs, and other artifacts. Below we will explain how to virtually eliminate data errors using DataOps automation and the simple building blocks of data and analytics testing and monitoring. . Tie tests to alerts.

Testing 214

Testing Manufacturing Data Quality Statistics 214

AWS Big Data

OCTOBER 1, 2024

Over the last year, Amazon Redshift added several performance optimizations for data lake queries across multiple areas of query engine such as rewrite, planning, scan execution and consuming AWS Glue Data Catalog column statistics. Performance was tested on a Redshift serverless data warehouse with 128 RPU.

Data Lake 115

Data Lake Statistics Broadcasting Optimization 115

AWS Big Data

MARCH 12, 2024

AWS Glue Data Quality reduces the effort required to validate data from days to hours, and provides computing recommendations, statistics, and insights about the resources required to run data validation. In this post, we provide benchmark results of running increasingly complex data quality rulesets over a predefined test dataset.

Data Quality 115

Data Quality Measurement Testing Visualization 115

DataKitchen

SEPTEMBER 18, 2024

Key statistics highlight the severity of the issue: 57% of respondents in a 2024 dbt Labs survey rated data quality as one of the three most challenging aspects of data preparation (up from 41% in 2023). Early measurements provide valuable insights that can guide future improvements.

Scorecard 189

Scorecard Data Quality Measurement Testing 189

AWS Big Data

DECEMBER 7, 2023

In this post, we outline planning a POC to measure media effectiveness in a paid advertising campaign. We chose to start this series with media measurement because “Results & Measurement” was the top ranked use case for data collaboration by customers in a recent survey the AWS Clean Rooms team conducted.

Measurement 115

Measurement Advertising Testing Data-driven 115

Occam's Razor

MAY 22, 2006

This post is a primer on the delightful world of testing and experimentation (A/B, Multivariate, and a new term from me: Experience Testing). Experimentation and testing help us figure out we are wrong, quickly and repeatedly and if you think about it that is a great thing for our customers, and for our employers.

Experimentation 103

Experimentation Testing Optimization Measurement 103

Occam's Razor

MARCH 8, 2010

A very simple test can allow you to figure out if the metric you are dutifully reporting (or absolutely in love with) is gold or mud. It is called the Three Layers of So What test. What's this lovely test? Let's check out how you would conduct the "so what" test with a couple of examples.

Metrics 118

Metrics Testing Key Performance Indicator KPI 118

datapine

JANUARY 6, 2022

Yet, before any serious data interpretation inquiry can begin, it should be understood that visual presentations of data findings are irrelevant unless a sound decision is made regarding scales of measurement. Interval: a measurement scale where data is grouped into categories with orderly and equal distances between the categories.

Visualization 246

Visualization Dashboards Cost-Benefit Measurement 246

Smart Data Collective

SEPTEMBER 22, 2021

In this blog post, we discuss the key statistics and prevention measures that can help you better protect your business in 2021. Cyber fraud statistics and preventions that every internet business needs to know to prevent data breaches in 2021. Sure, the above tips stand the test of time for cyber security.

Statistics 118

Statistics Risk Measurement Software 118

DataKitchen

NOVEMBER 5, 2024

Get Off The Blocks Fast: Data Quality In The Bronze Layer Effective Production QA techniques begin with rigorous automated testing at the Bronze layer , where raw data enters the lakehouse environment. Data Drift Checks (does it make sense): Is there a shift in the overall data quality?

Data Quality 204

Data Quality Testing Metrics Reporting 204

datapine

FEBRUARY 9, 2024

4) How to Select Your KPIs 5) Avoid These KPI Mistakes 6) How To Choose A KPI Management Solution 7) KPI Management Examples Fact: 100% of statistics strategically placed at the top of blog posts are a direct result of people studying the dynamics of Key Performance Indicators, or KPIs. 3) What Are KPI Best Practices? What happens next?

KPI 221

KPI Management Key Performance Indicator Measurement 221

Occam's Razor

FEBRUARY 7, 2022

Since you're reading a blog on advanced analytics, I'm going to assume that you have been exposed to the magical and amazing awesomeness of experimentation and testing. Insights worth testing. The entire online experimentation canon is filled with landing page optimization type testing. You can test landing pages.

Experimentation 103

Experimentation Testing Optimization Marketing 103

DataKitchen

OCTOBER 11, 2021

There are no automated tests , so errors frequently pass through the pipeline. There is no process to spin up an isolated dev environment to quickly add a feature, test it with actual data and deploy it to production. Finally, when your implementation is complete, you can track and measure your process.

Testing 162

Testing Metadata Dashboards Statistics 162

CIO Business Intelligence

JULY 5, 2022

Business analytics is the practical application of statistical analysis and technologies on business data to identify and anticipate trends and predict business outcomes. Business analytics also involves data mining, statistical analysis, predictive modeling, and the like, but is focused on driving better business decisions.

Business Analytics 136

Business Analytics Prescriptive Analytics Data mining Diagnostic Analytics 136

Domino Data Lab

OCTOBER 7, 2020

The Curse of Dimensionality , or Large P, Small N, ((P >> N)) , problem applies to the latter case of lots of variables measured on a relatively few number of samples. Statistical methods for analyzing this two-dimensional data exist. This statistical test is correct because the data are (presumably) bivariate normal.

Statistics 145

Statistics Testing Predictive Modeling Modeling 145

Domino Data Lab

NOVEMBER 17, 2020

High throughput screening technologies have been developed to measure all the molecules of interest in a sample in a single experiment (e.g., Each of these behaviors wreak havoc on statistical analyses. As we are still left with a Large P Small N problem, direct hypothesis testing is not possible. Introduction.

Statistics 131

Statistics Measurement Testing Predictive Modeling 131

DataKitchen

NOVEMBER 18, 2022

As he thinks through the various journeys that data take in his company, Jason sees that his dashboard idea would require extracting or testing for events along the way. Data and tool tests. Observability users are then able to see and measure the variance between expectations and reality during and after each run.

Testing 130

Testing Statistics Measurement Metrics 130

DataKitchen

JUNE 7, 2021

Hopefully, with metrics in place, you can show measured improvements in productivity and quality that will win converts. DataOps includes four key objectives: Measure Your Process – As data professionals, we advocate for the benefits of data-driven decision making. Measure Your Process. DataOps Objectives. Lower Error Rates.

Testing 130

Testing IT Measurement Data-driven 130

datapine

SEPTEMBER 16, 2022

But often that’s how we present statistics: we just show the notes, we don’t play the music.” – Hans Rosling, Swedish statistician. Your Chance: Want to test a powerful data visualization software? 14) “Visualize This: The Flowing Data Guide to Design, Visualization, and Statistics” by Nathan Yau. click for book source**.

Visualization 304

Visualization Dashboards Data-driven Statistics 304

DataKitchen

MARCH 12, 2024

We kept adding tests over time; it has been several years since we’ve had any major glitches. DataKitchen helped us completely transform our operations by broadening our testing definition. Tests assess important questions, such as “Is the data correct?” Director, Data Analytics Team “We had some data issues.

Metrics 124

Metrics Software Cost-Benefit Testing 124

CIO Business Intelligence

JUNE 7, 2022

The chief aim of data analytics is to apply statistical analysis and technologies on data to find trends and solve problems. Data analytics draws from a range of disciplines — including computer programming, mathematics, and statistics — to perform analysis on data in an effort to describe, predict, and improve performance.

Data Analytics 135

Data Analytics Diagnostic Analytics Management Analytics 135

Occam's Razor

AUGUST 22, 2011

Key To Your Digital Success: Web Analytics Measurement Model. " Measuring Incrementality: Controlled Experiments to the Rescue! Barriers To An Effective Web Measurement Strategy [+ Solutions!]. Measuring Online Engagement: What Role Does Web Analytics Play? "Engagement" How Do I Measure Success?

KPI 125

KPI Metrics Measurement ROI 125

Occam's Razor

APRIL 8, 2013

Sometimes, we escape the clutches of this sub optimal existence and do pick good metrics or engage in simple A/B testing. First, you figure out what you want to improve; then you create an experiment; then you run the experiment; then you measure the results and decide what to do. Testing out a new feature. Form a hypothesis.

Metrics 157

Metrics KPI Analytics Key Performance Indicator 157

datapine

SEPTEMBER 29, 2022

5) How Do You Measure Data Quality? In this article, we will detail everything which is at stake when we talk about DQM: why it is essential, how to measure data quality, the pillars of good quality management, and some data quality control techniques. How Do You Measure Data Quality? Table of Contents. 2) Why Do You Need DQM?

Data Quality 241

Data Quality Metrics Data-driven Management 241

O'Reilly on Data

MARCH 31, 2020

All you need to know for now is that machine learning uses statistical techniques to give computer systems the ability to “learn” by being trained on existing data. This has serious implications for software testing, versioning, deployment, and other core development processes. Machine learning adds uncertainty.

Management 338

Management Machine Learning Experimentation Metrics 338

Smart Data Collective

DECEMBER 9, 2021

Possible goals could be to increase conversion for an underperforming product or to test market-fit for a new product. Once you’ve defined your goals, you’ll need to determine how to measure them. Test first. Testing is invaluable for generating useful insights into how hypothetical strategies would perform in practice.

Big Data 136

Big Data Data-driven Key Performance Indicator Testing 136

The Unofficial Google Data Science Blog

DECEMBER 14, 2021

Some of that uncertainty is the result of statistical inference, i.e., using a finite sample of observations for estimation. But there are other kinds of uncertainty, at least as important, that are not statistical in nature. Representational uncertainty : the gap between the desired meaning of some measure and its actual meaning.

Uncertainty 56

Uncertainty Statistics Measurement Cost-Benefit 56

Occam's Razor

OCTOBER 31, 2011

In this case for my data it is not statistically significant (more on that later in this post), but there is no way you would know that (or not know that) just from the data in front of you. Statistical Significance is Your BFF. It does 1-tail and 2-tail tests and the even more beloved chi-square test. Download it.

Statistics 131

Statistics Testing Reporting Key Performance Indicator 131

O'Reilly on Data

DECEMBER 9, 2019

We develop an ordinary least squares (OLS) linear regression model of equity returns using Statsmodels, a Python statistical package, to illustrate these three error types. We use the diagnostic test results of our regression model to support the reasons why CIs should not be used in financial data analyses.

Statistics 27

Statistics Uncertainty Risk Marketing 27

O'Reilly on Data

DECEMBER 12, 2019

In addition to newer innovations, the practice borrows from model risk management, traditional model diagnostics, and software testing. Because ML models can react in very surprising ways to data they’ve never seen before, it’s safest to test all of your ML models with sensitivity analysis. [9] Residual analysis.

Machine Learning 196

Machine Learning Modeling Testing Risk Management 196

O'Reilly on Data

AUGUST 4, 2022

This kind of humility is likely to deliver more meaningful progress and a more measured understanding of such progress. The achievement of note is that it’s underpinned by a single model trained across all tasks rather than different models for different tasks and modalities.

Machine Learning 268

Machine Learning Modeling Statistics Software 268

datapine

JULY 17, 2019

KPI is a value measured to assess how effective a project or company is at achieving its business objectives. In other words, KPIs provide organizations with the means of measuring how various aspects of the business are performing in relation to their strategic goals. Quick Ratio / Acid Test. What Is A KPI? Budget Variance.

KPI 223

KPI Reporting Key Performance Indicator Dashboards 223

CIO Business Intelligence

MAY 27, 2024

CISOs are increasingly anxious because while they realize the ax will fall on them when the inevitable breach occurs, securing boardroom support for heavy investment in preventative measures, like training, is challenging in a world where revenue is demanded for each dollar spent. “The million compared to those with lower levels.

Cost-Benefit 116

Cost-Benefit Statistics ROI Measurement 116

CIO Business Intelligence

SEPTEMBER 3, 2024

IT oldsters remember the value skepticism of the late 1980s when Nobel Prize winner Robert Solow quipped, “ You can see the computer age everywhere but in the productivity statistics.” We need to fix how IT value is measured Most organizations are pretty good at measuring how much is being spent on IT — aka, the inputs.

Cost-Benefit 128

Cost-Benefit Measurement Advertising Statistics 128

AWS Big Data

MARCH 22, 2024

Benchmark setup In our testing, we used the 3 TB dataset stored in Amazon S3 in compressed Parquet format and metadata for databases and tables is stored in the AWS Glue Data Catalog. Table and column statistics were not present for any of the tables. In this post, we compare Amazon EMR 6.15.0 times faster on Amazon EMR 6.15.0

Metadata 118

Metadata Statistics Broadcasting Optimization 118

Data Science 101

JANUARY 15, 2020

Researchers/ scientists perform experiments to validate their hypothesis/ statements or to test a new product. Suppose we want to test the effectiveness of a new drug against a particular disease. Reliability: It means measurements should have repeatable results. For eg: you measure the blood pressure of a person.

Experimentation 96

Experimentation Statistics Measurement Testing 96