If you want to bootstrap the parameters in a statistical regression model, you have two primary choices. The first, case resampling, is discussed in a previous article. This article describes the second choice, which is resampling residuals (also called model-based resampling). This article shows how to implement residual resampling in
음식, 패션, 그리고 풍부한 문화유산으로 유명한 이탈리아의 경제 중심 밀라노는 오랜 역사를 바탕으로 개방과 혁신이 공존하는 ‘인큐베이터’ 도시인데요. 이탈리아에서 기술의 발전을 이끌고 있는 밀라노에서 10월 22일부터 24일까지 사흘간 유럽 최대 규모의 분석 컨퍼런스 ‘SAS 애널리틱스 익스피리언스(Analytics Experience) 2018'가 개최됐습니다. 이번 SAS 애널리틱스 익스피리언스에는 1,200명 이상의 전 세계 산업별 비즈니스 리더와 분석
The other day I was playing around with the voter registration data for all ~8 million registered voters in North Carolina (yes - this guy knows how to have fun!), and I got to wondering what last names were the most common. I summarized the data by county, and the
How should a data trust process work? David Loshin elaborates.
기업의 마케팅 전략도 인공지능(AI), 사물인터넷(IoT)과 같은 혁신적인 기술이 등장하며 함께 발전하고 있습니다. 고객 중심의 IT 환경에서 많은 기업은 높은 고객 충성도를 달성하고자 고객 여정(customer journey) 최적화에 많은 노력을 기울이고 있는데요. 인공지능 역시 고객 여정을 최적화하기 위한 기술로 많은 비즈니스에 도입되고 있습니다. 인공지능 강화학습(Reinforcement learning) 모델을 적용한 대표적인 예로는 미국 게임 개발사 아타리(Atari)가 선보인
If you want to bootstrap the parameters in a statistical regression model, you have two primary choices. The first is case resampling, which is also called resampling observations or resampling pairs. In case resampling, you create the bootstrap sample by randomly selecting observations (with replacement) from the original data. The
In my 15+ years working in clinical research, I've not seen significant evolution in the way we do clinical trials and apply advanced analytics to clinical trial data. A personal story demonstrates that a similar problem is at play in health care. Each year my daughter visits the children’s cardiology
This past Sunday was the last day of the NC State Fair, and we broke some records this year! Can you guess what those records were? I'll ramble on about the fair to give you time to come up with your guess, and then I'll let you know about the
I've been recovering for 15 years now, after a lengthy career caring for critically ill patients. Now, I’m part of a team at SAS that’s working to transform health care – and that's important to me because of something that happened when I was an ICU nurse. It changed my
Applying machine learning approaches to forecasting is an area of great research interest. Progress is being made on multiple fronts, for example: In the M4 Forecasting Competition, completed earlier this year, the top two performers utilized machine learning with traditional time series forecasting methods. At the link you'll find full
Innovation Labs gibt es schon seit einiger Zeit in allen Varianten. Einige gehören zu großen Unternehmen, andere zu Forschungsinstituten. Die RWTH Aachen hat ein solches Innovation Lab, das European 4.0 Transformation Center (E4TC), ins Leben gerufen und sucht Unternehmen, die sich daran beteiligen. Wie genau ein solches Innovation Lab funktioniert,
Have you noticed a lot of graphs popping up lately, about politicians, voters, and elections? ... Well of course - it's an election year! If you follow my blog posts, then you're probably a bit "smarter than the average bear" when it comes to scrutinizing graphs. And election graphs election
올해 초 2018년과 미래를 관통할 두 가지 기술로 '인공지능(AI)’과 ‘자동화(Automation)'를 소개해 드렸는데요. 인공지능과 자동화 기술은 사물인터넷(IoT)과 어떻게 연결될 수 있을까요? IDC 퓨처스케이프(IDC FutureScape)가 발표한 ‘2017년 전 세계 IoT 전망’ 보고서에 따르면, 2019년까지 사물인터넷에서 생성된 데이터의 40% 이상이 네트워크 엣지(edge)에 저장되어 처리되고 분석될 전망입니다. 또한 효과적인 사물인터넷 기술은 스트리밍 분석과 머신러닝을 결합해 진행될
A SAS programmer asked how to rearrange elements of a matrix. The rearrangement he wanted was rather complicated: certain blocks of data needed to move relative to other blocks, but the values within each block were to remain unchanged. It turned out that the mathematical operation he needed is called
Any of you who are even slightly into politics, or have followed any news lately, have probably seen something about the DNA test Elizabeth Warren took to prove/disprove her Native American ancestry. The test indicates she might have had a Native American ancestor 6 to 10 generations ago. That's a
There are four widely recognized styles of machine learning: supervised, unsupervised, semi-supervised and reinforcement learning. These styles have been discussed in great depth in the literature and are included in most introductory lectures on machine learning algorithms. As a recap, the table below summarizes these styles. For a comprehensive mapping
What can you learn about wildfires when you provide a room full of analysts with 7 years of US wildfire data and the tools they need to analyze it? A lot. At a recent data dive, we split 35 data scientists into 9 teams, provided multiple data sets containing information
필자는 데이터 전문가와 엔터프라이즈 시스템 컨설턴트로서 오랜 경력을 쌓아왔으며, 저자와 대학 교수로서 교육 활동도 진행하고 있습니다. 그 동안 200여 개의 개인, 50개 이상의 그룹을 위한 데이터 분석 프로젝트를 감독하면서 수많은 분석 프랙티스를 연구해왔는데요. 중요한 한 가지는 분석 프로젝트를 성공적으로 시작하기 위한 단 하나의 청사진은 존재하지 않는다는 것입니다. 하지만 다양한 성공 또는 실패
In a recent article about nonlinear least squares, I wrote, "you can often fit one model and use the ESTIMATE statement to estimate the parameters in a different parameterization." This article expands on that statement. It shows how to fit a model for one set of parameters and use the
Deep learning has taken off because organizations of all sizes are capturing a greater variety of data and can mine bigger data, including unstructured data. It’s not just large companies like Amazon, SAS and Google that have access to big data. It’s everywhere. Deep learning needs big data, and now
What if you could automatically detect supply chain anomalies as they happen, or even predict them in advance? You'd be able to take timely corrective action and help maximize revenue, margins, customer satisfaction and shareholder value. There's no question: Supply chain planning and execution is complex. From design and sourcing, to
"Imagine being told to part with a dear friend or part of your identity. Imagine being told to discard something that results in intense feelings of anxiety, sorrow, or guilt. That’s how it can feel to someone with hoarding issues. " Dr. Annette Perot is a licensed psychologist and has
Think that the company has let up in the last two years? Think again.
Krankenversicherung und neue Technologien – geht das zusammen? Auf alle Fälle! Und das User-Group-Treffen „Analytik in der Krankenversicherung“, das kürzlich in Leipzig stattfand, hat es unter Beweis gestellt. Diese von den Gesundheitsforen Leipzig ausgerichtete Veranstaltung ist ein sehr informatives Forum, auf dem sich analytische Fachexperten aus der Gesetzlichen Krankenversicherung (GKV)
There are several ways to use SAS to get the unique values for a data variable. In Base SAS, you can use the TABLES statement in PROC FREQ to generate a table of unique values (and the counts). You can also use the DISTINCT function in PROC SQL to get
Note: Today’s utility industry is in upheaval. All of the assumptions the business has run on have been turned on their heads. This post is the first in a three-part series looking at how analytics are helping utilities navigate this challenging landscape and find new opportunities for improvements in operations,
近年、クラウドファーストを唱える企業が増加し、データ分析のために、クラウド上に展開されている分析サービスを活用したり、クラウド上に独自に分析アプリケーションを構築するケースも増えています。 しかし、クラウド上にある分析サービスやアプリケーションで分析する対象のデータは、オンプレミス上に蓄積されているケースが大半であり、クラウドからこれらのデータにアクセスできるようにするための作業や環境設定は面倒かつ非効率で、膨大なデータをクラウドとやり取りするなどの運用コストも大きく、かつセキュリティのリスク回避も考慮しなければなりません。 こうした課題を解決するために、SAS ViyaではSAS Cloud Data Exchange (CDE)を提供しています。 SAS Cloud Data Exchange (CDE) は、プライベート/パプリックのクラウド上にあるアプリケーション（＝SAS Viya）からファイヤーウォールの後ろにある、顧客のオンプレミス上にあるデータに安全かつ確実にアクセスし、大量のデータをクラウドへ高速に転送することを可能とするデータ接続機能です。 CDEは、SAS Viyaのセルフサービス・データ準備向け製品であるSAS Data Preparationに含まれる機能です。 CDEを使用すれば、クラウド上にあるSAS Viyaからオンプレミス上にある様々なデータソース（Oracle, Teradata, Hadoop etc.）へ最小限の手順で容易かつセキュアにアクセスすることが可能になります。 サポート対象データソース： ・DB2, ODBC, Apache Hive, Oracle, Redshift, SQL Server, Postgres, SAP HANA, Teradata, SAS Data Sets CDEでは、最小限の一つのポート（Https port）を使用し、オンプレミス上にあるデータソースにアクセスするための資格情報（ユーザーID /パスワード）も保護された領域に格納し、使用するため、安全性が高められています。 また、クラウド上のSAS Viyaが複数のワーカーノードで分散構成されている場合には、オンプレミス上のデータを並列で高速にSAS Viya環境へロードすることが可能です。 利用手順概要は以下の通りです。 オンプレミス側にSAS Data Agent
Here in the US, we recently had a new Supreme Court Justice appointed. This is a very important position, and judges usually serve until they retire or die. My buddy Rick gave me a heads-up that there was a table of all the past & present justices on Wikipedia, and
Fest steht: Künstliche Intelligenz (KI) wird unser aller Leben verändern – und tut es schon. Weniger klar ist, in welcher Weise und in welchem Zeitrahmen diese Veränderungen passieren – und was am Ende dabei herauskommt. In vielen Bereichen gibt es wilde Spekulationen. Bei Life Sciences und im Gesundheitssektor lichtet sich
Smart retailers know that omnichannel customer experience isn't just about marketing anymore. It’s about bridging all your digital and physical channels to recognize customers wherever they are, collecting data and understanding the retail customer’s purchasing journey. By taking customer data, product data, and supply chain data - and applying predictive and prescriptive
