"data scientists" entries

Accelerating real-time analytics with Spark

Integration of the data supply chain is key to a reliable and fast big data analytics deployment.


Sign up now for our free webcast “Accelerating Advanced Analytics with Spark,” which will be held October 8, 2015 at 8 a.m. PT.

Apache Hadoop is a mature development framework, which coupled with its large ecosystem, and support and contributions from key players such as Cloudera, Hortonworks, and Yahoo, provides organizations with many tools to manage data of varying sizes.

In the past, Hadoop’s batch-oriented nature using MapReduce was sufficient to meet the processing needs of many organizations. However, increasing demands for faster processing of data have emerged. These demands have been driven by recent developments in streaming technologies, the Internet of Things (IoT) and real-time analytics, to name just a few. These new demands have required new processing models. One significant new technology today that is being used to meet these demands and is gaining considerable interest and widespread support is Apache Spark. Spark’s speed and versatility make it a key part of today’s big-data processing stack in industries from energy to finance. Read more…


Translating data into knowledge

Best practices for data preparation — what you need to know before data analysis can begin.

Download “Data Preparation in the Big Data Era,” a new free report to help you manage the challenges of data cleaning and preparation.

Joseph_Wright_of_Derby_The_AlchemistData is growing at an exponential rate worldwide, with huge business opportunities and challenges for every industry. In 2016, global Internet traffic will reach 90 exabytes per month, according to a recent Cisco report. The ability to manage and analyze an unprecedented amount of data will be the key to success for every industry.

To exploit the benefits of a big data strategy, a key question is how to translate all of that data into useful knowledge. To meet this challenge, a company first needs to have a clear picture of their strategic knowledge assets, such as their area of expertise, core competencies, and intellectual property.

Having a clear picture of the business model and the relationships with distributors, suppliers, and customers is extremely useful in order to design a tactical and strategic decision-making process. The true potential value of big data is only gained when placed in a business context, where data analysis drives better decisions — otherwise, it’s just data.

In a new O’Reilly report Data Preparation in the Big Data Era, we provide a step-by-step guide to manage the challenges of data cleaning and preparation — critical steps before effective data analysis can begin. We explore the common problems of data preparation and the different steps involved, including data cleaning, combination, and transformation. You’ll also learn about new products that deal with problem of data variety at scale, including Tamr’s solution, which curates data at scale using a combination of machine learning and expert feedback. Read more…


Training in the big data ecosystem

The O'Reilly Radar Podcast: Paco Nathan and Jesse Anderson on the evolution of the data training landscape.

Subscribe to the O’Reilly Radar Podcast to track the technologies and people that will shape our world in the years to come.

350px-Philo_medievIn this week’s Radar Podcast, O’Reilly’s Ben Lorica talks to Paco Nathan, director of O’Reilly Learning, and Jesse Anderson, technical trainer and creative engineer at Confluent.

Their discussion focuses on the training landscape in the big data ecosystem, their teaching techniques and particular content they choose, and a look at some expected future trends.

Here are a few snippets from their chat:

Training vs PowerPoint slides

Anderson: “Often, when you have a startup and somebody says, ‘Well, we need some training,’ what will usually happen is one of the software developers will say, ‘OK, I’ve done some training in the past and I’ll put together some PowerPoints.’ The differences between a training thing and doing some PowerPoints, like at a meetup, is that a training actually has to have hands-on exercises. It has to have artifacts that you use right there in class. You actually need to think through, these are concepts, these are things that the person will need to be successful in that project. It really takes a lot of time and it takes some serious expertise and some experience in how to do that.”

Nathan: “Early on, you would get some committer to go out and do a meetup, maybe talk about an extension to an API or whatever they were working on directly. If there was a client firm that came up and needed training, then they’d peel off somebody. As it evolved, that really didn’t work. That kind of model doesn’t scale. The other thing too is, you really do need people who understand instructional design, who really understand how to manage a classroom. Especially when it gets to any size, it’s not just a afterthought for an engineer to handle.” Read more…

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Building enterprise data applications with open source components

The O’Reilly Data Show podcast: Dean Wampler on bounded and unbounded data processing and analytics.

Subscribe to the O’Reilly Data Show Podcast to explore the opportunities and techniques driving big data and data science.


I first found myself having to learn Scala when I started using Spark (version 0.5). Prior to Spark, I’d peruse books on Scala but just never found an excuse to delve into it. In the early days of Spark, Scala was a necessity — I quickly came to appreciate it and have continued to use it enthusiastically.

For this Data Show Podcast, I spoke with O’Reilly author and Typesafe’s resident big data architect Dean Wampler about Scala and other programming languages, the big data ecosystem, and his recent interest in real-time applications. Dean has years of experience helping companies with large software projects, and over the last several years, he’s focused primarily on helping enterprises design and build big data applications.

Here are a few snippets from our conversation:

Apache Mesos & the big data ecosystem

It’s a very nice capability [of Spark] that you can actually run it on a laptop when you’re developing or working with smaller data sets. … But, of course, the real interesting part is to run on a cluster. You need some cluster infrastructure and, fortunately, it works very nicely with YARN. It works very nicely on the Hadoop ecosystem. … The nice thing about Mesos over YARN is that it’s a much more flexible, capable resource manager. It basically treats your cluster as one giant machine of resources and gives you that illusion, ignoring things like network latencies and stuff. You’re just working with a giant machine and it allocates resources to your jobs, multiple users, all that stuff, but because of its greater flexibility, it cannot only run things like Spark jobs, it can run services like HDFS or Cassandra or Kafka or any of these tools. … What I saw was there was a situation here where we had maybe a successor to YARN. It’s obviously not as mature an ecosystem as the Hadoop ecosystem but not everybody needs that maturity. Some people would rather have the flexibility of Mesos or of solving more focused problems.

Read more…


Major players and important partnerships in the big data market

A fully data-driven market report maps and analyzes the intersections between companies.


Download our new free report “Mapping Big Data: A Data Driven Market Report” for insights into the shape and structure of the big data market.

Who are the major players in the big data market? What are the sectors that make up the market and how do they relate? Which among the thousands of partnerships are most important?

These are just a handful of questions we explore in-depth in the new O’Reilly report now available for free download: Mapping Big Data: A Data Driven Market Report. For this new report, San Francisco-based startup Relato mapped the intersection of companies throughout the data ecosystem — curating a network with tens of thousands of nodes and edges representing companies and partnerships in the big data space.

Relato created the network by extracting data from company home pages on the Web and analyzed it using social network analysis; market experts interpreted the results to yield the insights presented in the report. The result is a preview of the future of market reports. Read more…


Improving corporate planning through insight generation

Data storage and management providers are becoming key contributors for insight as a service.

350px-Nikola_Tesla,_with_his_equipment_Wellcome_M0014782Contrary to what many believe, insights are difficult to identify and effectively apply. As the difficulty of insight generation becomes apparent, we are starting to see companies that offer insight generation as a service.

Data storage, management and analytics are maturing into commoditized services, and the companies that provide these services are well-positioned to provide insight on the basis not just of data, but data access and other metadata patterns.

Companies like DataHero and Host Analytics [full disclosure: Host Analytics is one of my portfolio companies] are paving the way in the insight-as-a-service space. Host Analytics’ initial product offering was a cloud-based Enterprise Performance Management (EPM) Suite, but far more important is what they are now enabling for the enterprise: they have moved from being an EPM company to being an insight generation company.  In this post, I will discuss a few of the trends that have enabled insight as a service (IaaS) and discuss the general case of using a software-as-a-service (SaaS) EPM solution to corral data and deliver insight as a service as the next level of product.

Insight generation is the identification of novel, interesting, plausible and understandable relations among elements of a data set that a) lead to the formation of an action plan and b) result in an improvement as measured by a set of KPIs. The evaluation of the set of identified relations to establish an insight, and the creation of an action plan associated with a particular insight or insights, needs to be done within a particular context and necessitates the use of domain knowledge. Read more…


2015 Data Science Salary Survey

Revealing patterns in tools, tasks, and compensation through clustering and linear models.

Download the free “2015 Data Science Salary Survey” report to learn about tools, trends, and what pays (and what doesn’t) for data professionals.

Data scientists are constantly looking outward, tapping into and extracting information from all manner of data in ways hardly imaginable not long ago. Much of the change is technological — data collection has multiplied as well as our means of processing it — but an important cultural shift has played a part, too, evidenced by the desire of organizations to become “data-driven” and the wide availability of public APIs.

But how much do we look inward, at ourselves? The variety of data roles, both in subject and method, means that even those of us who have a strong grasp of what it means to be a data scientist in a particular domain or sub-field may not have a complete view of the data space as a whole. Just as data we process and analyze for our organizations can be used to decide business actions, data about data scientists can help inform our career choices.

That’s where we come in. O’Reilly Media has been conducting an annual survey for data professionals, asking questions primarily about tools, tasks, and salary — and we are now releasing the third installment of the associated report, the 2015 Data Science Salary Survey. The 2015 edition features a completely new graphic design of the report and our findings. In addition to estimating salary differences based on demographics and tool usage, we have given a more detailed look at tasks — how data professionals spend their workdays — and titles. Read more…


The security infusion

Building access policies into data stores.

Safe_Rob_Pongsajapan_Flickr_350pxHadoop jobs reflect the same security demands as other programming tasks. Corporate and regulatory requirements create complex rules concerning who has access to different fields in data sets, sensitive fields must be protected from internal users as well as external threats, and multiple applications run on the same data and must treat different users with different access rights. The modern world of virtualization and containers adds security at the software level, but tears away the hardware protection formerly offered by network segments, firewalls, and DMZs.

Furthermore, security involves more than saying yes or no to a user running a Hadoop job. There are rules for archiving or backing up data on the one hand, and expiring or deleting it on the other. Audit logs are a must, both to track down possible breaches and to conform to regulation.

Best practices for managing data in these complex, sensitive environments implement the well-known principle of security by design. According to this principle, you can’t design a database or application in a totally open manner and then layer security on top if you expect it to be robust. Instead, security must be infused throughout the system and built in from the start. Defense in depth is a related principle that urges the use of many layers of security, so that an intruder breaking through one layer may be frustrated by the next. Read more…


How advanced analytics are impacting sports

The expanding role of data analytics in a trillion-dollar industry.

Download our new free report “Data Analytics in Sports: How Playing with Data Transforms the Game,” by Janine Barlow, to learn how advanced predictive analytics are impacting the world of sports.

350px_Baseball_Players_Practicing_Thomas_Eakins_1875Sports are the perfect playing field on which data scientists can play their game — there are finite structures and distinct goals. Many of the components in sports break down numerically — e.g., number of players; length of periods; and, taking a broader view, how much each player is paid.

This is why sports and data have gone hand-in-hand since the very beginning of the industry. What, after all, is baseball without baseball cards?

In a new O’Reilly report, Data Analytics in Sports: How Playing with Data Transforms the Game, we explore the role of data analytics and new technology in the sports industry. Through a series of interviews with experts at the intersection of data and sports, we break down some of the industry’s most prominent advances in the use of data analytics and explain what these advances mean for players, executives, and fans.

Read more…