A new semi-supervised ensemble algorithm called XGBOD (Extreme Gradient Boosting Outlier Detection) is proposed, described and demonstrated for the enhanced detection of outliers from normal observations in various practical datasets. The proposed framework combines the strengths of both supervised and unsupervised machine learning methods by creating a hybrid approach that exploits each of their individual performance capabilities in outlier detection. XGBOD uses multiple unsupervised outlier mining algorithms to extract useful representations from the underlying data that augment the predictive capabilities of an embedded supervised classifier on an improved feature space. The novel approach is shown to provide superior performance in comparison to competing individual detectors, the full ensemble and two existing representation learning based algorithms across seven outlier datasets.

Error-correcting output codes (ECOC) is an ensemble method combining a set of binary classifiers for multi-class learning problems. However, in traditional ECOC framework, the binary classifiers are trained independently. To explore the interaction between the binary classifiers, we construct an error correction network (ECN) that jointly trains all binary classifiers while maximizing the ensemble diversity to improve its robustness against adversarial attacks. An ECN is built based on a code matrix which is generated by maximizing the error tolerance, i.e., the minimum Hamming distance between any two rows, as well as the ensemble diversity, i.e., the variation of information between any two columns. Though ECN inherently promotes the diversity between the binary classifiers as each ensemble member solves a different classification problem (specified by the corresponding column of the code matrix), we empirically show that the ensemble diversity can be further improved by forcing the weight matrices learned by ensemble members to be orthogonal. The ECN is trained in end-to-end fashion and can be complementary to other defense approaches including adversarial training. We show empirically that ECN is effective against the state-of-the-art while-box attacks while maintaining good accuracy on normal examples.

--Playing an essential role in data mining, machine learning has a long history of being applied to networks on multifarious tasks and has played an essential role in data mining. However, the discrete and sparse natures of networks often render it difficult to apply machine learning directly to networks. T o circumvent this difficulty, one major school of thought to approach networks using machine learning is via network embeddings . On the one hand, this network embeddings have achieved huge success on aggregated network data in recent years. On the other hand, learning network embeddings on distributively stored networks still remained understudied: T o the best of our knowledge, all existing algorithms for learning network embeddings have hitherto been exclusively centralized and thus cannot be applied to these networks. T o accommodate distributively stored networks, in this paper, we proposed a multi-agent model. Under this model, we developed the multi-agent network embedding learning algorithm (MANELA) for learning network embeddings. We demonstrate MANELA's advantages over other existing centralized network embedding learning algorithms both theoretically and experimentally. I NTRODUCTION Playing an essential role in data mining, machine learning has a long history of being applied to networks on multifarious tasks, such as network classification [1], prediction of protein binding [2], etc. Thanks to the advancement of technologies such as the Internet and database management systems, the amount of data that are available for machine learning algorithms have been growing tremendously over the past decade. Among these datasets, a huge fraction can be modeled as networks, such as web networks, brain networks, citation networks, street networks, etc. [3]. Therefore, improving machine learning algorithms on networks has become even more important. However, the discrete and sparse natures of networks often render it difficult to apply machine learning directly to networks. To circumvent this difficulty, one major school of thought to approach networks using machine learning is via network embeddings [4].

Machine Learning – ML: It may sound like a gold mine to many businesses especially for the companies which are actually data factories i.e social media platforms. Sadly the current version of machine learning as used in the industry is extremely limited and dedicated to the completion of mundane tasks. The real need is to clarify, demonstrate, extract real values and reap rewards out of this buzz words in the real business world which is missing big time. In this blog post, I am attempting to create a short text movie of machine learning timelines to give a high-level view on machine learning evolution. For Basics around Machine Learning please read this.

Forty-one years ago, Pamela McCorduck wrote a history of the still-young field of artificial intelligence. It was incredibly ambitious, and the result was a superb work of scholarship. She updated that book, Machines Who Think, twenty-five years later, and declared then that she wouldn't write another volume on the subject. Fortunately for all of us, she went back on that vow. "A history exists of all this, a human story about the invention of artificial intelligence by a handful of brilliant scientists," she writes in This Could Be Important, which went on sale last month (Carnegie Mellon Press).

This is just the beginning. Data science and machine learning are driving image recognition, autonomous vehicles development, decisions in the financial and energy sectors, advances in medicine, the rise of social networks, and more. Linear regression is an important part of this. Linear regression is one of the fundamental statistical and machine learning techniques. Whether you want to do statistics, machine learning, or scientific computing, there are good chances that you'll need it. It's advisable to learn it first and then proceed towards more complex methods. By the end of this article, you'll have learned: Free Bonus: Click here to get access to a free NumPy Resources Guide that points you to the best tutorials, videos, and books for improving your NumPy skills. Regression analysis is one of the most important fields in statistics and machine learning. There are many regression methods available. Linear regression is one of them. For example, you can observe several employees of some company and try to understand how their salaries depend on the features, such as experience, level of education, role, city they work in, and so on. This is a regression problem where data related to each employee represent one observation.

For instance, an engineer who can develop brilliant new product designs but who can't effectively communicate the value of those designs to others (or collaborate with design teams to bring those ideas to life) is doing himself and his organization a major disservice. Similar problems apply at the leadership level, too, where often everyone from the manager to the senior level fails to understand the impact of these fundamental human skills. In fact, as we hurdle toward our inevitable robot- and AI-filled future, these sorts of uniquely human capabilities may only be more essential. According to a recent Future of Jobs Report, the World Economic Forum says "technology-related and non-cognitive soft skills are becoming increasingly more important." It goes on to urge governments to take a harder look at their educational policies and how those policies can "rapidly raise education and skills levels of individuals of all ages, particularly with regard to both STEM and non-cognitive soft skills, enabling people to leverage their uniquely human capabilities."

Employee engagement – an emotional investment from an employee: The concept of employee engagement is crucial for businesses to analyze and understand their employee sentiments about the company. It has always been and will continue to be a key performance parameter for any business success. Employees who are engaged consistently show up to work with a greater commitment to delivering a high volume and quality of work. Understandably, these employees also help their organizations improve customer relationships and obtain impressive organic growth. Thus, organizations should treat employees as a valuable asset and consider their participation as an emotional investment in the company.

In June, TechCrunch Ethicist in Residence Greg M. Epstein attended EmTech Next, a conference organized by the MIT Technology Review. The conference, which took place at MIT's famous Media Lab, examined how AI and robotics are changing the future of work. Greg's essay, Will the Future of Work Be Ethical? reflects on his experiences at the conference, which produced what he calls "a religious crisis, despite the fact that I am not just a confirmed atheist but a professional one as well." In it, Greg explores themes of inequality, inclusion and what it means to work in technology ethically, within a capitalist system and market economy. Accompanying the story for Extra Crunch are a series of in-depth interviews Greg conducted around the conference, with scholars, journalists, founders and attendees.