451 research outputs found

    Relating Machine Learning to the Real-World: Analogies to Enhance Learning Comprehension

    Get PDF
    Machine learning is an exciting field for many, but the rigor, math, and its rapid evolution are often found to be formidable, keeping them away from studying and pursuing a career in this area. Similarity has been substantially explored in machine learning algorithms such as in the K-nearest neighbors, Kernel methods, Support Vector Machines, but not so much in human learning, particularly when it comes to teaching machine learning. In the course of teaching the subject to undergraduate, graduate, and general pool of students, the author found that relating the concepts to real-world examples greatly enhances student comprehension and makes the topics much more approachable despite the math and the methods involved. This paper relates some of the concepts, artifacts, and algorithms in machine learning such as overfitting, regularization, and Generative Adversarial Networks to the real world using illustrative examples. Most of the analogies included in the paper were well appreciated by the students in the course of the author’s teaching and acknowledged as enhancing comprehension. It is hoped that the material presented in this paper will benefit larger audiences, drawing more learners to the field, resulting in enhanced contributions to the area. The paper concludes by suggesting deep learning for automatically generating similarities and analogies as a future direction

    Misinformation Containment Using NLP and Machine Learning: Why the Problem Is Still Unsolved

    Get PDF
    Despite the increased attention and substantial research into it claiming outstanding successes, the problem of misinformation containment has only been growing in the recent years with not many signs of respite. Misinformation is rapidly changing its latent characteristics and spreading vigorously in a multi-modal fashion, sometimes in a more damaging manner than viruses and other malicious programs on the internet. This chapter examines the existing research in natural language processing and machine learning to stop the spread of misinformation, analyzes why the research has not been practical enough to be incorporated into social media platforms, and provides future research directions. The state-of-the-art feature engineering, approaches, and algorithms used for the problem are expounded in the process

    Numerical and Experimental Investigation of Aerodynamic Characteristics of Morphing Trailing Edge Wings in The Application of MAV

    Get PDF
    In the past few years, FDM basedpolymer3D printing process has flourished mainly with ABS filaments as a thermoplastic source. Food packing, medical, marine and agriculture industries employdevices and other usable items made of polymers. Utilizing layered fabrication components in these areascompelthem to have self-cleansing, anti-freezing and corrosion resistant surfaces. It is generally complex and expensive to prepare hydrophobic coatings. The present work is related to the development of a surface coating on 3D printed ABS specimens with the mentioned properties. 3D printed specimens were fabricated using Flash Forge 3D printer without any modifications, and the hydrophobic coatings were achieved by dip coating process using Tricalcium phosphate-chitin solutions with a ratio of 70:30. Static contact angle measurement was employedin gaging wettability impact on dip coated 3D printed specimens. By using digital vernier calipers and profilometer (SJ410), dimensional accuracy and surface roughness were assessed pre and post-coating. According to ASTM D570-98, water absorption tests were conducted at different time intervals. Results of the experiment showed that the hydrophobic solutions had been successfully synthesized. The maximum contact angle was achieved for solution 1(4g of tricalcium phosphate solution with 0.3g chitin solution) i.e., 109.3°. Improvement in the textureof 3D printed ABS surfaceswasobserved after dip coating. Dip-coated 3D printed ABS specimens exhibited minimal absorption based on their weight gain per area

    Reconnoitering Generative Deep Learning Through Image Generation From Text

    Get PDF
    A picture is worth a thousand words goes the well-known adage. Generating images from text understandably has many uses. In this chapter, the authors explore a state-of-the-art generative deep learning method to produce synthetic images and a new better way for evaluating the same. The approach focuses on synthesizing high-resolution images with multiple objects present in an image, given the textual description of the images. The existing literature uses object pathway GAN (OP-GAN) to automatically generate images from text. The work described in this chapter attempts to improvise the discriminator network from the original implementation using OP-GAN. This eventually helps the generator network\u27s learning rate adjustment based on the discriminator output. Finally, the trained model is evaluated using semantic object accuracy (SOA), the same metric that is used to evaluate the baseline implementation, which is better than the metrics used previously in the literature

    Numerical and Experimental Investigation of Aerodynamic Characteristics of Morphing Trailing Edge Wings in The Application of MAV

    Get PDF
    In the past few years, FDM basedpolymer3D printing process has flourished mainly with ABS filaments as a thermoplastic source. Food packing, medical, marine and agriculture industries employdevices and other usable items made of polymers. Utilizing layered fabrication components in these areascompelthem to have self-cleansing, anti-freezing and corrosion resistant surfaces. It is generally complex and expensive to prepare hydrophobic coatings. The present work is related to the development of a surface coating on 3D printed ABS specimens with the mentioned properties. 3D printed specimens were fabricated using Flash Forge 3D printer without any modifications, and the hydrophobic coatings were achieved by dip coating process using Tricalcium phosphate-chitin solutions with a ratio of 70:30. Static contact angle measurement was employedin gaging wettability impact on dip coated 3D printed specimens. By using digital vernier calipers and profilometer (SJ410), dimensional accuracy and surface roughness were assessed pre and post-coating. According to ASTM D570-98, water absorption tests were conducted at different time intervals. Results of the experiment showed that the hydrophobic solutions had been successfully synthesized. The maximum contact angle was achieved for solution 1(4g of tricalcium phosphate solution with 0.3g chitin solution) i.e., 109.3°. Improvement in the textureof 3D printed ABS surfaceswasobserved after dip coating. Dip-coated 3D printed ABS specimens exhibited minimal absorption based on their weight gain per area

    An Overview of Carbon Footprint Mitigation Strategies. Machine Learning for Societal Improvement, Modernization, and Progress

    Get PDF
    Among the most pressing issues in the world today is the impact of globalization and energy consumption on the environment. Despite the growing regulatory framework to prevent ecological degradation, sustainability continues to be a problem. Machine learning can help with the transition toward a net-zero carbon society. Substantial work has been done in this direction. Changing electrical systems, transportation, buildings, industry, and land use are all necessary to reduce greenhouse gas emissions. Considering the carbon footprint aspect of sustainability, this chapter provides a detailed overview of how machine learning can be applied to forge a path to ecological sustainability in each of these areas. The chapter highlights how various machine learning algorithms are used to increase the use of renewable energy, efficient transportation, and waste management systems to reduce the carbon footprint. The authors summarize the findings from the current research literature and conclude by providing a few future directions

    Prediction of Formation Conditions of Gas Hydrates Using Machine Learning and Genetic Programming

    Get PDF
    The formation of gas hydrates in the pipelines of oil, gas, chemical, and other industries has been a significant problem for many years because the formation of gas hydrates may block the pipelines. Hence, the knowledge of the phase equilibrium conditions of gas hydrate became necessary for the economic and safe working of oil, gas, chemical industries. Various thermodynamic approaches with various mathematical techniques are available for the prediction of formation conditions of gas hydrates. In this chapter, the authors have discussed the least square support vector machine and artificial neural network models for the prediction of stability conditions of gas hydrates and the use of genetic programming (GP) and genetic algorithm (GA) to develop a generalized correlation for predicting equilibrium conditions of gas hydrates

    Spectral analysis perspective of why misinformation containment is still an unsolved problem

    Get PDF
    Misinformation is still a major societal problem. The arrival of ChatGPT only added to the problem. This paper analyzes misinformation in the form of text from a spectral analysis perspective to find the answer to why the problem is still unsolved despite multiple years of research and a plethora of solutions in the literature. A variety of embedding techniques are used to represent information for the purpose. The diverse spectral methods used on these embeddings include t-distributed Stochastic Neighbor Embedding (t-SNE) and Principal Component Analysis (PCA). The analysis shows that misinformation is quite closely intertwined with genuine information and the machine learning algorithms are not as effective in separating the two despite the claims in the literature

    A Framework for Detecting Injected Influence Attacks on Microblog Websites Using Change Detection Techniques

    Get PDF
    Presidential elections can impact world peace, global economics, and overall well-being. Recent news indicates that fraud on the Web has played a substantial role in elections, particularly in developing countries in South America and the public discourse, in general. To protect the trustworthiness of the Web, in this paper, we present a novel framework using statistical techniques to help detect veiled Web fraud attacks in Online Social Networks (OSN). Specific examples are used to demonstrate how some statistical techniques, such as the Kalman Filter and the modified CUSUM, can be applied to detect various attack scenarios. A hybrid data set, consisting of both real user tweets collected from Twitter and simulated fake tweets is constructed for testing purposes. The efficacy of the proposed framework has been verified by computing metrics, such as Precision, Recall, and Area Under the ROC curve. The algorithms achieved up to 99.9% accuracy in some scenarios and are over 80% accurate for most of the other scenarios
    • …
    corecore