Collaborating Authors


Blender Bot -- Part 3: The Many Architectures


We have been looking into Facebook's open-sourced conversational offering, Blender Bot. In Part-1 we went over in detail about the DataSets used in the pre-training and fine-tuning of it and the failure cases as well as limitations of Blender. And in Part-2 we studied the more generic problem setting of "Multi-Sentence Scoring", the Transformer architectures used for such a task and learnt about the Poly-Encoders in particular -- which will be used to provide the encoder representations in Blender. In this 3rd and final part, we return from our respite with Poly-Encoders, back to Blender. We shall go over the different Model Architectures, their respective training objectives, the Evaluation methods and performance of Blender in comparison to Meena.

How to build a machine learning model in 7 steps


All types of organizations are implementing AI projects for numerous applications in a wide range of industries. These applications include predictive analytics, pattern recognition systems, autonomous systems, conversational systems, hyper-personalization activities and goal-driven systems. Each of these projects has something in common: They're all predicated on an understanding of the business problem and that data and machine learning algorithms must be applied to the problem, resulting in a machine learning model that addresses the project's needs. Deploying and managing machine learning projects typically follow the same pattern. However, existing app development methodologies don't apply because AI projects are driven by data, not programming code.

Health Checks for Machine Learning - A Guide to Model Retraining and Evaluation


In 2013, IBM and University of Texas Anderson Cancer Center developed an AI based Oncology Expert Advisor. According to IBM Watson, it analyzes patients medical records, summarizes and extracts information from vast medical literature, research to provide an assistive solution to Oncologists, thereby helping them make better decisions. According to an article on The Verge, the product demonstrated a series of poor recommendations. Like recommending a drug to a lady suffering from bleeding that would increase the bleeding. "A parrot with an internet connection" - were the words used to describe a modern AI based chat bot built by engineers at Microsoft in March 2016. 'Tay', a conversational twitter bot was designed to have'playful' conversations with users. It was supposed to learn from the conversations. It took literally 24 hours for twitter users to corrupt it.

AI-Driven Nevus Identification May Help Better Quantify Melanoma Risk


The combined use of a nevus identification algorithm and 3D total body imaging may help to reduce clinical subjectivity and improve estimations of melanoma risk, according to findings presented at SIIM 2020. As a major risk factor for melanoma, assessment of nevi on the skin is an important part of the dermatological exam, though the manual counting process uses up an extensive amount of resources. Often, nevi identification and counting is left up to the patient, which can introduce a large margin of error in clinical evaluations. To combat this, researchers led by Brigid D. Betz-Stablein, PhD, sought to develop an automated nevus identification algorithm using 3D body imagery produced by the VECTRA WB360 imaging system, which allows for total body photography. Dermatologists were used to identify nevi with diameters of at least 2mm on VECTRA 3-D avatars created from members of the general population; the labeled nevi were used to train a neural network-based artificial intelligence algorithm, which was then tested an additional 10, random avatars not included in the training set.

What Is Data Preparation in a Machine Learning Project


Data preparation may be one of the most difficult steps in any machine learning project. The reason is that each dataset is different and highly specific to the project. Nevertheless, there are enough commonalities across predictive modeling projects that we can define a loose sequence of steps and subtasks that you are likely to perform. This process provides a context in which we can consider the data preparation required for the project, informed both by the definition of the project performed before data preparation and the evaluation of machine learning algorithms performed after. In this tutorial, you will discover how to consider data preparation as a step in a broader predictive modeling machine learning project.

Explaining artificial intelligence in human-centred terms – Martin Schüßler


Since AI involves interactions between machines and humans--rather than just the former replacing the latter--'explainable AI' is a new challenge. Intelligent systems, based on machine learning, are penetrating many aspects of our society. They span a large variety of applications--from the seemingly harmless automation of micro-tasks, such as the suggestion of synonymous phrases in text editors, to more contestable uses, such as in jail-or-release decisions, anticipating child-services interventions, predictive policing and many others. Researchers have shown that for some tasks, such as lung-cancer screening, intelligent systems are capable of outperforming humans. In many other cases, however, they have not lived up to exaggerated expectations.

Paraphrase Generation Using Deep Reinforcement Learning – Thought Leaders


When writing or talking we've all wondered whether there is a better way of communicating an idea to others. What words should I use? How should I structure the thought? How are they likely to respond? At Phrasee, we spend a lot of time thinking about language – what works and what doesn't.

Evaluating Your Learning to Rank Model: Dos and Don'ts in Offline/Onl…


Learning to rank (LTR from now on) is the application of machine learning techniques, typically supervised, in the formulation of ranking models for information retrieval systems. With LTR becoming more and more popular (Apache Solr supports it from Jan 2017 and Elasticsearch has an Open Source plugin released in 2018), organizations struggle with the problem of how to evaluate the quality of the models they train. This talk explores all the major points in both Offline and Online evaluation. Setting up correct infrastructures and processes for a fair and effective evaluation of the trained models is vital for measuring the improvements/regressions of a LTR system. The talk is intended for: – Product Owners, Search Managers, Business Owners – Software Engineers, Data Scientists, and Machine Learning Enthusiast Expect to learn: the importance of Offline testing from a business perspective how Offline testing can be done with Open Source libraries how to build a realistic test set from the original data set in input avoiding common mistakes in the process the importance of Online testing from a business perspective A/B testing and Interleaving approaches: details and Pros/ Cons common mistakes and how they can false the obtained results Join us as we explore real-world scenarios and dos and don'ts from the e-commerce industry!

Project Halo: Towards a Digital Aristotle

AI Magazine

Project Halo is a multistaged effort, sponsored by Vulcan Inc, aimed at creating Digital Aristotle, an application that will encompass much of the world's scientific knowledge and be capable of applying sophisticated problem solving to answer novel questions. Vulcan envisions two primary roles for Digital Aristotle: as a tutor to instruct students in the sciences and as an interdisciplinary research assistant to help scientists in their work. As a first step towards this goal, we have just completed a six-month pilot phase designed to assess the state of the art in applied knowledge representation and reasoning (KR&/R). Vulcan selected three teams, each of which was to formally represent 70 pages from the advanced placement (AP) chemistry syllabus and deliver knowledge-based systems capable of answering questions on that syllabus. The evaluation quantified each system's coverage of the syllabus in terms of its ability to answer novel, previously unseen questions and to provide human- readable answer justifications.

Artificial intelligence these are the leading companies in 2020 Hut Mobile


The topic of artificial intelligence has become indispensable in today's world. More and more companies are developing innovative solutions that want to simplify people's lives with the help of machine learning, big data and digital assistants. Some players are particularly active here and invest considerable sums in AI and Co. We would like to introduce these to you below. When you think of artificial intelligence, you often imagine human-like robots that perfect human-machine interaction.