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 Personal Assistant Systems


A David vs Goliath battle unfolding in the dating app industry

Al Jazeera

More than a decade ago, when Shahzad Younas started a website specifically for Muslims to meet and marry, he thought his problems would be the typical kind โ€“ attracting users, expanding the business, earning a profit. Instead, his biggest hurdle has been figuring out how to fend off a competitor that is suing him in multiple countries on multiple fronts with the aim, he said, of "stifling competition". Younas, 38, a British investment banker turned entrepreneur, has been butting heads since 2016 with the online dating giant Match Group, which owns Match.com, At issue are elements of his website's branding โ€“ elements that Match has argued create confusion between its platforms and Younas's. The latest blow came in late April when Younas lost a trademark appeal in the United Kingdom.


Semi-Supervised Federated Learning for Keyword Spotting

arXiv.org Artificial Intelligence

Keyword Spotting (KWS) is a critical aspect of audio-based applications on mobile devices and virtual assistants. Recent developments in Federated Learning (FL) have significantly expanded the ability to train machine learning models by utilizing the computational and private data resources of numerous distributed devices. However, existing FL methods typically require that devices possess accurate ground-truth labels, which can be both expensive and impractical when dealing with local audio data. In this study, we first demonstrate the effectiveness of Semi-Supervised Federated Learning (SSL) and FL for KWS. We then extend our investigation to Semi-Supervised Federated Learning (SSFL) for KWS, where devices possess completely unlabeled data, while the server has access to a small amount of labeled data. We perform numerical analyses using state-of-the-art SSL, FL, and SSFL techniques to demonstrate that the performance of KWS models can be significantly improved by leveraging the abundant unlabeled heterogeneous data available on devices.


Runtime Monitoring of Dynamic Fairness Properties

arXiv.org Artificial Intelligence

A machine-learned system that is fair in static decision-making tasks may have biased societal impacts in the long-run. This may happen when the system interacts with humans and feedback patterns emerge, reinforcing old biases in the system and creating new biases. While existing works try to identify and mitigate long-run biases through smart system design, we introduce techniques for monitoring fairness in real time. Our goal is to build and deploy a monitor that will continuously observe a long sequence of events generated by the system in the wild, and will output, with each event, a verdict on how fair the system is at the current point in time. The advantages of monitoring are two-fold. Firstly, fairness is evaluated at run-time, which is important because unfair behaviors may not be eliminated a priori, at design-time, due to partial knowledge about the system and the environment, as well as uncertainties and dynamic changes in the system and the environment, such as the unpredictability of human behavior. Secondly, monitors are by design oblivious to how the monitored system is constructed, which makes them suitable to be used as trusted third-party fairness watchdogs. They function as computationally lightweight statistical estimators, and their correctness proofs rely on the rigorous analysis of the stochastic process that models the assumptions about the underlying dynamics of the system. We show, both in theory and experiments, how monitors can warn us (1) if a bank's credit policy over time has created an unfair distribution of credit scores among the population, and (2) if a resource allocator's allocation policy over time has made unfair allocations. Our experiments demonstrate that the monitors introduce very low overhead. We believe that runtime monitoring is an important and mathematically rigorous new addition to the fairness toolbox.


Multi-Task End-to-End Training Improves Conversational Recommendation

arXiv.org Artificial Intelligence

In this paper, we analyze the performance of a multitask end-to-end transformer model on the task of conversational recommendations, which aim to provide recommendations based on a user's explicit preferences expressed in dialogue. While previous works in this area adopt complex multi-component approaches where the dialogue management and entity recommendation tasks are handled by separate components, we show that a unified transformer model, based on the T5 text-to-text transformer model, can perform competitively in both recommending relevant items and generating conversation dialogue. We fine-tune our model on the ReDIAL conversational movie recommendation dataset, and create additional training tasks derived from MovieLens (such as the prediction of movie attributes and related movies based on an input movie), in a multitask learning setting. Using a series of probe studies, we demonstrate that the learned knowledge in the additional tasks is transferred to the conversational setting, where each task leads to a 9%-52% increase in its related probe score.


PaGE-Link: Path-based Graph Neural Network Explanation for Heterogeneous Link Prediction

arXiv.org Artificial Intelligence

Transparency and accountability have become major concerns for black-box machine learning (ML) models. Proper explanations for the model behavior increase model transparency and help researchers develop more accountable models. Graph neural networks (GNN) have recently shown superior performance in many graph ML problems than traditional methods, and explaining them has attracted increased interest. However, GNN explanation for link prediction (LP) is lacking in the literature. LP is an essential GNN task and corresponds to web applications like recommendation and sponsored search on web. Given existing GNN explanation methods only address node/graph-level tasks, we propose Path-based GNN Explanation for heterogeneous Link prediction (PaGE-Link) that generates explanations with connection interpretability, enjoys model scalability, and handles graph heterogeneity. Qualitatively, PaGE-Link can generate explanations as paths connecting a node pair, which naturally captures connections between the two nodes and easily transfer to human-interpretable explanations. Quantitatively, explanations generated by PaGE-Link improve AUC for recommendation on citation and user-item graphs by 9 - 35% and are chosen as better by 78.79% of responses in human evaluation.


Amazon's Echo Show 8 drops to $75 in new smart display sale

Engadget

If you missed the chance to buy the Echo Show 8 when it was discounted to $75 at the start of April, Amazon has once again reduced the smart display to that price. The $55 cut means the Echo Show 8 is only $5 more than it was during Black Friday last year. If you've been eyeing one of Amazon's larger smart displays, the retailer has also reduced the price of the Echo Show 10 and Echo Show 15. You can get the company's largest smart display for $214.98, down from $279.98. Meanwhile, the Echo Show 10 is currently priced at $185.


Enactive Artificial Intelligence: Subverting Gender Norms in Robot-Human Interaction

arXiv.org Artificial Intelligence

This paper introduces Enactive Artificial Intelligence (eAI) as an intersectional gender-inclusive stance towards AI. AI design is an enacted human sociocultural practice that reflects human culture and values. Unrepresentative AI design could lead to social marginalisation. Section 1, drawing from radical enactivism, outlines embodied cultural practices. In Section 2, explores how intersectional gender intertwines with technoscience as a sociocultural practice. Section 3 focuses on subverting gender norms in the specific case of Robot-Human Interaction in AI. Finally, Section 4 identifies four vectors of ethics: explainability, fairness, transparency, and auditability for adopting an intersectionality-inclusive stance in developing gender-inclusive AI and subverting existing gender norms in robot design.


Pixies apologize for sabotaging your Google Assistant alarm

Engadget

For the last few years, you've been able to say "Stop" to tell Google Assistant to end an alarm early without the need to preface your command with "Hey Google." It's a handy feature Google first debuted on Assistant-enabled smart displays and speakers before later rolling it out to Pixel smartphones. And for the most part, it works like a charm, though one person recently discovered a fun quirk of the feature that involves the Pixies classic "Where Is My Mind?" In a Reddit post spotted by Android Police, Pixel user "asevarte" recounts how their morning alarm would go off and sometimes turn off moments later for seemingly no reason. "Maybe once every other week or so, I would wake up 30 minutes later on my backup alarm, with no indication as to why the first shut itself off," they told the Google Pixel subreddit.


Annoying Amazon Echo and Alexa settings to change now

FOX News

If a restart doesn't fix the problem, your Wi-Fi network might be to blame. When too many devices are connected to your network, your Alexa device may get lost in the congestion. Try turning off any connected devices you're not using. Also, keep your Alexa device away from metal objects, Bluetooth devices, baby monitors, microwaves, and other sources of interference. Placing Alexa at a higher location will help boost signal strength. It's all in the data: Most people make this major mistake sharing photos


Beyond Single Items: Exploring User Preferences in Item Sets with the Conversational Playlist Curation Dataset

arXiv.org Artificial Intelligence

Users in consumption domains, like music, are often able to more efficiently provide preferences over a set of items (e.g. a playlist or radio) than over single items (e.g. songs). Unfortunately, this is an underexplored area of research, with most existing recommendation systems limited to understanding preferences over single items. Curating an item set exponentiates the search space that recommender systems must consider (all subsets of items!): this motivates conversational approaches-where users explicitly state or refine their preferences and systems elicit preferences in natural language-as an efficient way to understand user needs. We call this task conversational item set curation and present a novel data collection methodology that efficiently collects realistic preferences about item sets in a conversational setting by observing both item-level and set-level feedback. We apply this methodology to music recommendation to build the Conversational Playlist Curation Dataset (CPCD), where we show that it leads raters to express preferences that would not be otherwise expressed. Finally, we propose a wide range of conversational retrieval models as baselines for this task and evaluate them on the dataset.