Expert Systems
A Knowledge-Based Configurator That Supports Sales, Engineering, and Manufacturing at AT&T Network Systems
The product information contained in these sources frequently becomes obsolete and out of synch with the engineering drawings. Inaccurate orders, when combined with products that are so highly technical in nature, cause delays in order processing and manufacturing and can result in billing discrepancies. These operators were chosen at least in part to avoid intractability in the underlying subsumption algorithm (Levesque and Brachman 1987). In particular, the description language lacks true disjunction and has no way to express negation. Nevertheless, we have not encountered major problems when we encoded the product knowledge for our AT&T Network Systems products.
A Knowledge System that Integrates Heterogeneous Software for a Design Application
These are known as free-design parameters. When the range is finally obtained, the cycle begins again, based on perturbations of free-design parameters. Each program is "owned" and validated by a We have implemented a knowledge system that integrates the many computational programs (technology codes) Boeing aerospace vehicle designers use, thereby expediting design analysis. Because this system separates facts about attributes of the current set of technology codes from general knowledge about running the codes, those who maintain the system can keep it continuously up to date at low cost. The third approach left the technology codes untouched and built a procedural program that initiated separate, independent processes consisting of the technology codes communicating through a common database.
A Graduate-Level Expert Systems Course
The course size is limited to 20. It is run as a 14-week course, with one 3-hour class per week. One goal of the course is to examine a number of expert, knowledgebased, problem-solving systems, looking at each system in some depth. Another important goal is to make comparisons across systems in a domain-independent way. An attempt is made to relate systems by their problem-solving capabilities rather than merely by the AI techniques used.
A Biologist Looks At Cognitive AI
Alt,hough cognitive AI is not generally viewed as being "scieutific" in the same, strong sense as is physics, it shares a number of the properties of the natural sciences, especially biology Certain of the special themes of biology, notably the principles of bistoricity and of structure-function relations, are applicable in AI research From a biologist's viewpoint, certain principles of cognitive AI research emerge It typically gets mixed reviews-some critics raise their hands in horror and say, "This is not how things are done. You arc violating the canons of drama, and I just, don't like it." Others are swept along by the excitement of the play. Some of these friendlier critics may like what they see even t,hough it runs counter to principles they have previously espoused, but most like the new play in part because it does fit into their intellectual framework. It is in this latter spirit that I view the science of AI.
Differentiable Learning of Logical Rules for Knowledge Base Reasoning
Yang, Fan, Yang, Zhilin, Cohen, William W.
We study the problem of learning probabilistic first-order logical rules for knowledge base reasoning. This learning problem is difficult because it requires learning the parameters in a continuous space as well as the structure in a discrete space. We propose a framework, Neural Logic Programming, that combines the parameter and structure learning of first-order logical rules in an end-to-end differentiable model. This approach is inspired by a recently-developed differentiable logic called TensorLog [5], where inference tasks can be compiled into sequences of differentiable operations. We design a neural controller system that learns to compose these operations. Empirically, our method outperforms prior work on multiple knowledge base benchmark datasets, including Freebase and WikiMovies.
End-to-end Differentiable Proving
Rocktäschel, Tim, Riedel, Sebastian
We introduce deep neural networks for end-to-end differentiable theorem proving that operate on dense vector representations of symbols. These neural networks are recursively constructed by following the backward chaining algorithm as used in Prolog. Specifically, we replace symbolic unification with a differentiable computation on vector representations of symbols using a radial basis function kernel, thereby combining symbolic reasoning with learning subsymbolic vector representations. The resulting neural network can be trained to infer facts from a given incomplete knowledge base using gradient descent. By doing so, it learns to (i) place representations of similar symbols in close proximity in a vector space, (ii) make use of such similarities to prove facts, (iii) induce logical rules, and (iv) it can use provided and induced logical rules for complex multi-hop reasoning. On four benchmark knowledge bases we demonstrate that this architecture outperforms ComplEx, a state-of-the-art neural link prediction model, while at the same time inducing interpretable function-free first-order logic rules.
What is Machine Learning? A definition - Expert System
Machine learning is an application of artificial intelligence (AI) that provides systems the ability to automatically learn and improve from experience without being explicitly programmed. Machine learning focuses on the development of computer programs that can access data and use it learn for themselves. The process of learning begins with observations or data, such as examples, direct experience, or instruction, in order to look for patterns in data and make better decisions in the future based on the examples that we provide. The primary aim is to allow the computers learn automatically without human intervention or assistance and adjust actions accordingly. Machine learning algorithms are often categorized as supervised or unsupervised.
Health AI Accenture
There has been a lot of hype surrounding artificial intelligence (AI), its capabilities, and its potential, but what exactly is AI and how it will impact health? Accenture defines AI in health as a collection of multiple technologies enabling machines to sense, comprehend, act and learn so they can perform administrative and clinical healthcare functions. Unlike legacy technologies that are only algorithms/tools that complement a human, health AI today can truly augment human activity. These technologies can include natural language processing, intelligent agents, computer vision, machine learning, expert systems, autonomous cars, chatbots and voice recognition. AI is expected to generate nearly $150 billion of value for the health economy.
Cognitive Systems: Toward Human-Level Functionality
Nirenburg, Sergei (Rensselaer Polytechnic Institute)
This is an area where statistics-and MLbased that cognitive system developers currently address systems can be symbiotic with cognitive systems: the and methodological preferences that they, by and former can provide advanced computation frameworks large, share. For some of the issues, the consensus is while the latter can provide content-related not entirely universal, which is to be expected for a insights into the choice of the inventory of features to group of active developers. Still, the general points of consensus should help to characterize the overall be used in making decisions.
Natural Language Understanding (NLU, not NLP) in Cognitive Systems
McShane, Marjorie (Rensselaer Polytechnic Institute)
Developing cognitive agents with human-level natural language understanding (NLU) capabilities requires modeling human cognition because natural, unedited utterances regularly contain ambiguities, ellipses, production errors, implicatures, and many other types of complexities. Moreover, cognitive agents must be nimble in the face of incomplete interpretations since even people do not perfectly understand every aspect of every utterance they hear. So, once an agent has reached the best interpretation it can, it must determine how to proceed – be that acting upon the new information directly, remembering an incomplete interpretation and waiting to see what happens next, seeking out information to fill in the blanks, or asking its interlocutor for clarification. The reasoning needed to support NLU extends far beyond language itself, including, non-exhaustively, the agent’s understanding of its own plans and goals; its dynamic modeling of its interlocutor’s knowledge, plans, and goals, all guided by a theory of mind; its recognition of diverse aspects human behavior, such as affect, cooperative behavior, and the effects of cognitive biases; and its integration of linguistic interpretations with its interpretations of other perceptive inputs, such as simulated vision and non-linguistic audition. Considering all of these needs, it seems hardly possible that fundamental NLU will ever be achieved through the kinds of knowledge-lean text-string manipulation being pursued by the mainstream natural language processing (NLP) community. Instead, it requires a holistic approach to cognitive modeling of the type we are pursuing in a paradigm called OntoAgent.