Africa
Text2Model: Model Induction for Zero-shot Generalization Using Task Descriptions
Amosy, Ohad, Volk, Tomer, Ben-David, Eyal, Reichart, Roi, Chechik, Gal
We study the problem of generating a training-free task-dependent visual classifier from text descriptions without visual samples. This Text-to-Model (T2M) problem is closely related to zero-shot learning, but unlike previous work, a T2M model infers a model tailored to a task, taking into account all classes in the task. We analyze the symmetries of T2M, and characterize the equivariance and invariance properties of corresponding models. In light of these properties we design an architecture based on hypernetworks that given a set of new class descriptions predicts the weights for an object recognition model which classifies images from those zero-shot classes. We demonstrate the benefits of our approach compared to zero-shot learning from text descriptions in image and point-cloud classification using various types of text descriptions: From single words to rich text descriptions. The dominant paradigm for obtaining predictive models in machine learning is inductive training, often using massive labeled datasets. In contrast, people employ other techniques to obtain predictive models. Specifically, they create task-specific discriminative models based on language instructions, such as "separate soft toys from hard ones" or "collect the furry toy animals" (Markman, 1990). This contrast between machine and human learning is striking, but until now, teaching machines to obtain task-specific discriminative models from natural language descriptions has been limited. Language-based classification has been studied for the closely related, yet different, task of zeroshot learning from text or attributes (ZSL) (Frome et al., 2013; Lampert et al., 2013). Then, images of an unseen concept can be categorized by finding the class whose descriptor is closest to the image in the shared space. The issue is that in this family of approaches the learned representation (and the kNN classifier that it induces) are fixed after training, and are not tuned to a classification task given at inference time.
COST-EFF: Collaborative Optimization of Spatial and Temporal Efficiency with Slenderized Multi-exit Language Models
Shen, Bowen, Lin, Zheng, Liu, Yuanxin, Liu, Zhengxiao, Wang, Lei, Wang, Weiping
Transformer-based pre-trained language models (PLMs) mostly suffer from excessive overhead despite their advanced capacity. For resource-constrained devices, there is an urgent need for a spatially and temporally efficient model which retains the major capacity of PLMs. However, existing statically compressed models are unaware of the diverse complexities between input instances, potentially resulting in redundancy and inadequacy for simple and complex inputs. Also, miniature models with early exiting encounter challenges in the trade-off between making predictions and serving the deeper layers. Motivated by such considerations, we propose a collaborative optimization for PLMs that integrates static model compression and dynamic inference acceleration. Specifically, the PLM is slenderized in width while the depth remains intact, complementing layer-wise early exiting to speed up inference dynamically. To address the trade-off of early exiting, we propose a joint training approach that calibrates slenderization and preserves contributive structures to each exit instead of only the final layer. Experiments are conducted on GLUE benchmark and the results verify the Pareto optimality of our approach at high compression and acceleration rate with 1/8 parameters and 1/19 FLOPs of BERT.
Learning Single-Index Models with Shallow Neural Networks
Bietti, Alberto, Bruna, Joan, Sanford, Clayton, Song, Min Jae
Single-index models are a class of functions given by an unknown univariate ``link'' function applied to an unknown one-dimensional projection of the input. These models are particularly relevant in high dimension, when the data might present low-dimensional structure that learning algorithms should adapt to. While several statistical aspects of this model, such as the sample complexity of recovering the relevant (one-dimensional) subspace, are well-understood, they rely on tailored algorithms that exploit the specific structure of the target function. In this work, we introduce a natural class of shallow neural networks and study its ability to learn single-index models via gradient flow. More precisely, we consider shallow networks in which biases of the neurons are frozen at random initialization. We show that the corresponding optimization landscape is benign, which in turn leads to generalization guarantees that match the near-optimal sample complexity of dedicated semi-parametric methods.
How data analytics, artificial intelligence will help PFAs enhance customer service
The importance of Artificial Intelligence (AI), Data Analytics and Big Data in helping business drive transformation and customer management has attracted the attention of Pension Fund Administrators(PFAs) and players in the pension industry. According them, these have a key role to play in shaping how industries evolve, and has become a massive force driving the transformation of all businesses in today's world. With this in mind the Pension Fund Operators Association of Nigeria (PenOp) recently put together a seminar for the industry to educate and show the benefits of adopting AI and data analytics. The seminar was tagged: "What has Data Analytics, Artificial Intelligence (AI) and Big Data got to do with Pensions?'' The online session, which was open to pension professionals sought to answer questions such as: What does AI have to do with the pension industry?
United States Court of Appeals for the Federal Circuit Holds That an Artificial Intelligence System Cannot Be an Inventor on a Patent Application
Dr. Stephen Thaler developed DABUS (Device for Autonomous Bootstrapping of Unified Science), an artificial intelligence (AI) system that can autonomously create patentable inventions. Thaler has filed patent applications in various jurisdictions for two inventions created by DABUS โ a food container with side walls having a fractal profile, and a beacon for attracting enhanced attention for example in a search and rescue scenario[1]. In each application, Thaler listed DABUS as the sole inventor, forcing patent offices in various jurisdictions to address the issue of whether an AI system can be an inventor on a patent application. Thus far, the DABUS patent applications have found very limited success in patent offices and courts around the world. In the latest decision, the United States Court of Appeals for the Federal Circuit (CAFC) held that the US Patent Act requires an inventor to be a natural person, and consequently, an AI system cannot be an inventor on a United States patent application.[2] The DABUS applications were initially rejected by the United States Patent and Trademark Office (USPTO).
Building the 'Intelligent Bank' of the Future
The status quo in retail banking is tottering. This has forced banks and credit unions to modify their business models, re-prioritize investments, change products and services offered and ramp up innovation efforts. There has also been a rethinking of distribution options, with digital channels significantly increasing in importance. These shifts are reflected in the sixth iteration of a study of the future of retail banking conducted by The Economist Intelligence Unit, on behalf of Temenos. Until recently, the changes in consumer behavior were believed to be the primary impetus for changes in retail banking strategies.
Can Tom Siebel Fulfill His Vision To Make C3 AI One Of The World's Next Great Software Companies? - C3 AI
The wide scale adoption of Artificial Intelligence (AI) software is one of the great transformational technologies of the 21st Century. It is also big business. The global market for AI was estimated at $387.45 billion in 2022 and is expected to reach $1.394 trillion by 2029, according to Fortune Business Insight. One company that is helping to accelerate that transformation, is AI pioneer C3 AI (NYSE: AI). Founded in 2009 long before the wide adoption of either the Cloud or AI by legendary Silicon Valley entrepreneur and billionaire Tom Siebel, C3 provides an open model-AI architecture that simplifies data science and application development to offer an end-to-end platform for developing, deploying, and operating large-scale AI applications; a portfolio of industry-specific SaaS AI applications; a suite of industry-specific CRM applications; and a no-code AI solution to apply data science to everyday business problems.
Top Renewable Energy Companies to Watch in 2022
Environmental problems become more urgent and affect the lives of people, marine life, and various animal species. Only in 2022, forest fires in Spain, France, and many other countries worldwide led to the destruction of animals' natural habitats, a decrease in the number of air producers, and many harmful outcomes for local residents. Although it is hard to say if humanity can still stop global warming and other environmental issues, there are some ways to restrain their development, and the utilization of renewable energy sources is among them. In this article, we list the best and most innovative renewable energy companies to keep on your radar this year. Moreover, if you are seeking more information on how modern technology can help us prevent global environmental catastrophes, read these AITJ articles: 5 Ways AI Can Improve Environmental Sustainability and How AI Helps Clean Oceans from Plastics.
ProSiT! Latent Variable Discovery with PROgressive SImilarity Thresholds
Fornaciari, Tommaso, Hovy, Dirk, Bianchi, Federico
The most common ways to explore latent document dimensions are topic models and clustering methods. However, topic models have several drawbacks: e.g., they require us to choose the number of latent dimensions a priori, and the results are stochastic. Most clustering methods have the same issues and lack flexibility in various ways, such as not accounting for the influence of different topics on single documents, forcing word-descriptors to belong to a single topic (hard-clustering) or necessarily relying on word representations. We propose PROgressive SImilarity Thresholds - ProSiT, a deterministic and interpretable method, agnostic to the input format, that finds the optimal number of latent dimensions and only has two hyper-parameters, which can be set efficiently via grid search. We compare this method with a wide range of topic models and clustering methods on four benchmark data sets. In most setting, ProSiT matches or outperforms the other methods in terms six metrics of topic coherence and distinctiveness, producing replicable, deterministic results.
Tomayto, Tomahto. Beyond Token-level Answer Equivalence for Question Answering Evaluation
Bulian, Jannis, Buck, Christian, Gajewski, Wojciech, Boerschinger, Benjamin, Schuster, Tal
The predictions of question answering (QA)systems are typically evaluated against manually annotated finite sets of one or more answers. This leads to a coverage limitation that results in underestimating the true performance of systems, and is typically addressed by extending over exact match (EM) with pre-defined rules or with the token-level F1 measure. In this paper, we present the first systematic conceptual and data-driven analysis to examine the shortcomings of token-level equivalence measures. To this end, we define the asymmetric notion of answer equivalence (AE), accepting answers that are equivalent to or improve over the reference, and publish over 23k human judgments for candidates produced by multiple QA systems on SQuAD. Through a careful analysis of this data, we reveal and quantify several concrete limitations of the F1 measure, such as a false impression of graduality, or missing dependence on the question. Since collecting AE annotations for each evaluated model is expensive, we learn a BERT matching (BEM) measure to approximate this task. Being a simpler task than QA, we find BEM to provide significantly better AE approximations than F1, and to more accurately reflect the performance of systems. Finally, we demonstrate the practical utility of AE and BEM on the concrete application of minimal accurate prediction sets, reducing the number of required answers by up to x2.6.