Deep Learning
How Much Training Data Do You Require For Machine Learning?
It is a crucial component of machine learning (ML), and having the proper quality and amount of data sets is critical for accurate outcomes. The more training data available for the machine learning algorithm, the better the model will be able to identify different sorts of objects, making it simpler to distinguish them in real-life predictions. However, how will you determine how much training is sufficient for your machine learning? As insufficient data will affect your model's prediction accuracy, while more than enough data will yield the best results, the question is whether you can manage big data or large quantities of datasets, as well as whether you can feed such data into algorithms using deep learning or a more complex method. The complexity of your model, machine learning algorithms, and data training or validation procedure all influence how much training data is necessary for machine learning.
An OpenAI Model Learns to Summarize Books
Many large tech companies are competing to develop general-purpose artificial intelligence (AI) -- allowing their model to approach and solve just about any problem we give them, no matter how time-consuming or challenging. This is referred to as the alignment problem. To test out and scale a potential solution, the OpenAI team recently trained an artificial intelligence model to recursively summarize books. Using natural language processing through GPT-3 can get you the gist of a book of any length. According to the OpenAI team, the model "achieves a 6/7 rating (similar to the average human-written summary) from humans who have read the book 5% of the time and a 5/7 rating 15% of the time."
Will the cloud eat your AI?
"Abandon all hope ye who enter here" was the inscription Dante read when passing through the gates of hell. Apparently, it's also true of anyone but the big cloud providers when it comes to artificial intelligence, according to an analysis by Bain & Company. "The CSPs [cloud service providers] are best positioned because of the significant head start they have in using AI on a large scale," the report authors stated. Given that FirstMark investor Matt Turck recently called out how well startups have done in the shadows of the cloud giants, it's worth diving deeper into the strengths the clouds bring to AI. "CSPs' cloud and digital services have given them access to the enormous amounts of data required to effectively train AI models," the authors concluded. Such economies of scale have been an asset to the cloud providers for years.
Feature Flow Regularization: Improving Structured Sparsity in Deep Neural Networks
Wu, Yue, Lan, Yuan, Zhang, Luchan, Xiang, Yang
Pruning is a model compression method that removes redundant parameters in deep neural networks (DNNs) while maintaining accuracy. Most available filter pruning methods require complex treatments such as iterative pruning, features statistics/ranking, or additional optimization designs in the training process. In this paper, we propose a simple and effective regularization strategy from a new perspective of evolution of features, which we call feature flow regularization (FFR), for improving structured sparsity and filter pruning in DNNs. Specifically, FFR imposes controls on the gradient and curvature of feature flow along the neural network, which implicitly increases the sparsity of the parameters. The principle behind FFR is that coherent and smooth evolution of features will lead to an efficient network that avoids redundant parameters. The high structured sparsity obtained from FFR enables us to prune filters effectively. Experiments with VGGNets, ResNets on CIFAR-10/100, and Tiny ImageNet datasets demonstrate that FFR can significantly improve both unstructured and structured sparsity. Our pruning results in terms of reduction of parameters and FLOPs are comparable to or even better than those of state-of-the-art pruning methods.
Transformer-based Map Matching Model with Limited Ground-Truth Data using Transfer-Learning Approach
Jin, Zhixiong, Kim, Jiwon, Yeo, Hwasoo, Choi, Seongjin
In many spatial trajectory-based applications, it is necessary to map raw trajectory data points onto road networks in digital maps, which is commonly referred to as a map-matching process. While most previous map-matching methods have focused on using rule-based algorithms to deal with the map-matching problems, in this paper, we consider the map-matching task from the data-driven perspective, proposing a deep learning-based map-matching model. We build a Transformer-based map-matching model with a transfer learning approach. We generate trajectory data to pre-train the Transformer model and then fine-tune the model with a limited number of ground-truth data to minimize the model development cost and reduce the real-to-virtual gap. Three metrics (Average Hamming Distance, F-score, and BLEU) at two levels (point and segment level) are used to evaluate the model performance. The results indicate that the proposed model outperforms existing models. Furthermore, we use the attention weights of the Transformer to plot the map-matching process and find how the model matches the road segments correctly.
Noisy Text Data: Achilles' Heel of popular transformer based NLP models
Bagla, Kartikay, Kumar, Ankit, Gupta, Shivam, Gupta, Anuj
In the last few years, the ML community has created a number of new NLP models based on transformer architecture. These models have shown great performance for various NLP tasks on benchmark datasets, often surpassing SOTA results. Buoyed with this success, one often finds industry practitioners actively experimenting with fine-tuning these models to build NLP applications for industry use cases. However, for most datasets that are used by practitioners to build industrial NLP applications, it is hard to guarantee the presence of any noise in the data. While most transformer based NLP models have performed exceedingly well in transferring the learnings from one dataset to another, it remains unclear how these models perform when fine-tuned on noisy text. We address the open question by Kumar et al. (2020) to explore the sensitivity of popular transformer based NLP models to noise in the text data. We continue working with the noise as defined by them -- spelling mistakes & typos (which are the most commonly occurring noise). We show (via experimental results) that these models perform badly on most common NLP tasks namely text classification, textual similarity, NER, question answering, text summarization on benchmark datasets. We further show that as the noise in data increases, the performance degrades. Our findings suggest that one must be vary of the presence of noise in their datasets while fine-tuning popular transformer based NLP models.
$\bar{G}_{mst}$:An Unbiased Stratified Statistic and a Fast Gradient Optimization Algorithm Based on It
It is difficult to optimize a giant model with deep and wider layers. Similar to most optimization algorithms, training a deep model with gradient method (SGD-like Algorithms) has disadvantages such as easy to fall into local minima or saddle point and slow convergence speed. There have been a lot of researches on the improvement of the gradient method, and a considerable part of these researches focus on how to refine the search direction while keeping the iteration cost as low as possible to accelerate the convergence of the algorithm[10, 11, 12, 13, 14, 15, 16]. These improvements for the search direction are roughly divided into two categories. One is the momentum method[11] based on the principles of physics and the corresponding improved algorithms[12, 20, 21], the momentum method avoids excessive swing amplitude of the search track by retaining part of the potential energy of the original track to accelerate the convergence.
Design Strategy Network: A deep hierarchical framework to represent generative design strategies in complex action spaces
Raina, Ayush, Cagan, Jonathan, McComb, Christopher
Generative design problems often encompass complex action spaces that may be divergent over time, contain state-dependent constraints, or involve hybrid (discrete and continuous) domains. To address those challenges, this work introduces Design Strategy Network (DSN), a data-driven deep hierarchical framework that can learn strategies over these arbitrary complex action spaces. The hierarchical architecture decomposes every action decision into first predicting a preferred spatial region in the design space and then outputting a probability distribution over a set of possible actions from that region. This framework comprises a convolutional encoder to work with image-based design state representations, a multi-layer perceptron to predict a spatial region, and a weight-sharing network to generate a probability distribution over unordered set-based inputs of feasible actions. Applied to a truss design study, the framework learns to predict the actions of human designers in the study, capturing their truss generation strategies in the process. Results show that DSNs significantly outperform non-hierarchical methods of policy representation, demonstrating their superiority in complex action space problems.
A MultiModal Social Robot Toward Personalized Emotion Interaction
Once the robots have the ability to recognize the user's affective states, the HRI system can utilize this information The utilization of emotional models in HRI can create more natural This paper presents an ongoing study on multimodal humanrobot and engaging HRI experiences, as evidenced by Ficocelli interaction (HRI) with a reinforcement learning (RL) et al. (Ficocelli, Terao, and Nejat 2015). To develop an effective HRI system for social emotional model can also be used for the empathetic robots that can naturally interact with human users, the appraisal for social robots that can interact with children in robots need to accurately identify the user's affective states the long-term study (Leite et al. 2014).