In the last decade, computer engineering has exploded with solutions based on cloud computing, distributed systems, big data, streaming or artificial intelligence. Today’s world systems are data-intensive so that volumes become higher and cheaper. Shortly speaking, data is at the centre of our interests. One of issues in these area is a data quality — why is it so important? Nowadays, data is everywhere and drives companies and their operations. If we do not make decisions based on reliable or complete information, it might have a huge impact on these and end up with tragic consequences. The data’s correctness and prominence reserves a special discipline, known as a data cleansing, which is focused on removing or correcting coarse records. cleanframes is a small library for Apache Spark to make data cleansing automated and enjoyable. Let’s walk through a problem, step by step, to examine what it takes to make data quality as awesome and reliable as possible! Let’s introduce a sample data and, for a simplicity-sake, make it a small set: And a domain model that, for its representation, is defined as: If you are wondering why there are options across the case class the answer is simple: Scala primitives are values and cannot be nulls. Options liberate us by setting the dataframe schema columns’ nullability to true. Let’s load the data and check what Spark will do about it: The collect variable contains the following result: As you can see, due to malformed values, the second and fourth lines don’t retain the correct data and reject entire rows. We would be much better off if it would be possible to ignore only invalid cells and...
Cyber attacks are happening in today’s world. It can also lead to data breaches where confidential information is leaked online and then exploited by criminals to commit financial fraud. In a bid to put an end to all these illegal activities, 25-year-old Shubham Singh is helping the police department solve complex cases. At a young age itself, Shubham Singh has impressed Mumbai police force with his hard work and dedication. He had the opportunity to lecture the Mumbai Police on ethical hacking and assisting them to solve tough cybercrimes. He was brought up in a family where computer technology was not common. The turning point of his life was when his Facebook profile was hacked. He started to learn a lot of YouTube videos and other important sources of information for rectifying the problem and he finally got his account back. This very learning experience got him motivated and his passion and interest in ethical hacking increased even more. There is a specific reason as to why they made up their mind to work with the Mumbai Police. The journey began last year when he was lecturing at an institute in Vikhroli. Impressed by his teachings and his interest to tackle cybercrimes, one of his professors put him in touch with the police department. He then started helping them by solving a case with his technical knowledge. Since then, he has been connected with Mumbai Police and has played an important role in solving several cases. Shubham Singh now runs his own start-up named “Cyber World Academy in Vikhroli” which is in collaboration with his friend Soumya Mondal. They...
Technology isn’t static. It keeps moving, developing and evolving. When the first website was developed decades ago, it was a technological marvel at the time, especially since it gave people a glimpse of what could be achieved via the World Wide Web, which was still in its infancy during the time. Fast forward to today, the internet has become a part of everyday existence and the web experience has extended to applications which grow more interactive and intuitive with each passing year. The web apps today are much faster and propose new opportunities for connecting everyday objects to the web. And the best way to honor this evolution is to analyze the trends that made these innovations happen. In a recent post, we discussed popular trends in mobile app development. This time, let’s review trends that are having a considerable impact on web application development in 2017. Here are our top five picks. 1 – Artificial Intelligence (AI) We are a long way away before machines can mimic human thinking completely, but with the innovations made in AI during the last two years, we are certainly a bit closer to the notion than before. One of these innovations are conversational interfaces. Enabling artificially intelligent solutions to converse, retain what they learned from conversations and base their decisions accordingly has enabled them to offer more intuitive experiences to users. Take, for example, Google Assistant which uses a conversational interface to talk with users to help them do everything from booking a ride on Uber, to making dinner reservations at their restaurants of choice. It learns about users from the conversations...
Restaurant business is quite dynamic and challenging one. The invasion of technology in restaurant business was not something market leaders had predicted a decade ago. However, the fast penetration of technologies and corresponding real world applications such as restaurant mobile app development, waiter management solution and smart restaurant kitchen has surpassed the expectations and boosted restaurant business to give excellent ROI. Food Ordering and Delivery This industry has transformed rapidly from merely serving meals to customers that visit the restaurant to allowing them order food online, accessing the menu on website or through restaurant mobile app development services and getting the food delivered at doorstep. In addition to restaurant app development for food ordering purpose, there is demand for apps that enable users to search for different restaurants in the city along with ratings, reviews, photos and details on type of food being served. Get your on-demand delivery app developed to serve the needs of customers of digital age and reap its benefits. Technology Solutions for Restaurant Business Beyond food ordering and delivery, restaurants can leverage the benefit of mobile app by including high-end features and functionalities. Mobile technology can be used to integrate, optimize and streamline all restaurant operations right from calculating the table waitlist turnover to analyzing dinner table order patterns for offering better services to guests. Restaurant Management Solution Restaurant managers can access all the information through mobile app and allocate tasks to waiters accordingly. Restaurant management solution helps managers in supervising customer table management, table allotment to waiters and stewards and kitchen order status. The best part about this solution is that managers can access...
We are very excited to announce our 2019 fourth and final release, Kali Linux 2019.4, which can be downloaded immediately. This brings the kernel up to version 5.2.9 and includes a variety of new features across the board including NetHunter, ARM and packages (plus fixes and updates for normal bugs). Features Included In Kali Linux 2019.4 So now let us have a detailed look on the same; New Desktop Environment and GTK3 Theme A long time has come for an upgrade to the desktop environment. Since months now, we’ve been thinking about how to fix it, what we needed to do, experimenting with different methods, and so on. We had a few issues that we wanted to address head-on as a summary like Performance issues, Fractured user experience and Modern look. In order to sort this issue, they have tracked down Daniel Ruiz de Alegría and started the development of a new theme running on Xfce. They considered Xfce, since addressed them best while still being accessible to the majority of users. We’re very excited about this new UI update, and it’s going to love all kali users. But as the UI can be a little like religion, don’t worry if you don’t want to abandon Gnome. They still have a Gnome build for you, with a couple of changes in place. As time goes on, they’re going to make changes to all the desktop environments they release to get them “close” to a similar user experience regardless of what DE you run. Because we don’t have the resources to invest extensively in modifying all these different environments, this...
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