Personal Assistant Systems
The Many, Many Twists of Netflix's Hit em Clickbait /em , Explained in Non-Clickbaity Detail
Deciding which of Netflix's thousands of shows and movies to grant your all-important click can be a paralyzing task for many of us, so there was something brilliant, or cynical--or in all likelihood, both--about the streaming service coming out with a show called Clickbait. It's announcing itself as potentially dishonest and exploitative and daring you to click anyway, and the gambit clearly worked: As of Tuesday, the limited series, which premiered on the streaming service last week, was topping Netflix's most-watched list. Whether you don't want to give Clickbait the satisfaction of your click or you've already clicked many times over, let's talk about it--and there is a lot to talk about--spoilers and all. In the first episode of the eight-episode series, a video surfaces online of Nick Brewer (Adrian Grenier), an improbably perfect husband and father, being held hostage and holding a series of signs: One says he abuses women. Another says that if the video gets to 5 million views, he will die.
NVIDIA's latest tech makes AI voices more expressive and realistic
The voices on Amazon's Alexa, Google Assistant and other AI assistants are far ahead of old-school GPS devices, but they still lack the rhythms, intonation and other qualities that make speech sound, well, human. NVIDIA has unveiled new research and tools that can capture those natural speech qualities by letting you train the AI system with your own voice, the company announced at the Interspeech 2021 conference. To improve its AI voice synthesis, NVIDIA's text-to-speech research team developed a model called RAD-TTS, a winning entry at an NAB broadcast convention competition to develop the most realistic avatar. The system allows an individual to train a text-to-speech model with their own voice, including the pacing, tonality, timbre and more. Another RAD-TTS feature is voice conversion, which lets a user deliver one speaker's words using another person's voice.
Amazon's Echo Show 5s are cheaper than ever starting at $45
If you missed the previous sale earlier this month, you have another chance to grab one of Amazon's Echo Show 5s for less. Both the first- and second-gen versions of the compact smart display are on sale right now, with the original Echo Show 5 going for $45 and the updated version, which came out earlier this year, only $10 more. Unlike the new Echo Show 8, the Show 5s are designed to fit neatly on your nightstand and act as smart alarm clocks. Each have a 5.5-inch, 960 x 480 touchscreen that shows the time along with things like weather forecasts, news headlines and more. They are also capable of making video calls thanks to their built-in camera and mics, and if you have multiple Alexa devices in your home, the Show 5s can be part of your larger intercom system.
Black-Box Attacks on Sequential Recommenders via Data-Free Model Extraction
Yue, Zhenrui, He, Zhankui, Zeng, Huimin, McAuley, Julian
We investigate whether model extraction can be used to "steal" the weights of sequential recommender systems, and the potential threats posed to victims of such attacks. This type of risk has attracted attention in image and text classification, but to our knowledge not in recommender systems. We argue that sequential recommender systems are subject to unique vulnerabilities due to the specific autoregressive regimes used to train them. Unlike many existing recommender attackers, which assume the dataset used to train the victim model is exposed to attackers, we consider a data-free setting, where training data are not accessible. Under this setting, we propose an API-based model extraction method via limited-budget synthetic data generation and knowledge distillation. We investigate state-of-the-art models for sequential recommendation and show their vulnerability under model extraction and downstream attacks. We perform attacks in two stages. (1) Model extraction: given different types of synthetic data and their labels retrieved from a black-box recommender, we extract the black-box model to a white-box model via distillation. (2) Downstream attacks: we attack the black-box model with adversarial samples generated by the white-box recommender. Experiments show the effectiveness of our data-free model extraction and downstream attacks on sequential recommenders in both profile pollution and data poisoning settings.
Max-Utility Based Arm Selection Strategy For Sequential Query Recommendations
Parambath, Shameem A. Puthiya, Anagnostopoulos, Christos, Murray-Smith, Roderick, MacAvaney, Sean, Zervas, Evangelos
We consider the query recommendation problem in closed loop interactive learning settings like online information gathering and exploratory analytics. The problem can be naturally modelled using the Multi-Armed Bandits (MAB) framework with countably many arms. The standard MAB algorithms for countably many arms begin with selecting a random set of candidate arms and then applying standard MAB algorithms, e.g., UCB, on this candidate set downstream. We show that such a selection strategy often results in higher cumulative regret and to this end, we propose a selection strategy based on the maximum utility of the arms. We show that in tasks like online information gathering, where sequential query recommendations are employed, the sequences of queries are correlated and the number of potentially optimal queries can be reduced to a manageable size by selecting queries with maximum utility with respect to the currently executing query. Our experimental results using a recent real online literature discovery service log file demonstrate that the proposed arm selection strategy improves the cumulative regret substantially with respect to the state-of-the-art baseline algorithms.
Google's Nest Audio smart speaker is on sale for $80 right now
Google's Nest Audio has been one of our favorite smart speakers since it came out almost a year ago. When compared to other $100 devices, it packs a lot of value and will be especially attractive for those who already use the Google Assistant a lot. But now you can grab the speaker for even less because Best Buy and B&H Photo have the Nest Audio for only $80. While we did see the speaker drop to $75 ahead of Amazon Prime Day back in June, this is the best price we've seen since then. The Nest Audio is Google's answer to Amazon's Echo and Apple's HomePod mini and it holds its own against both of those devices. We like its attractive, minimalist design and you have five colors to choose from, so you'll likely find one that fits well with the rest of your home decor.
Everything you need to know about Edge AI and beyond
Edge computing, as known to many, has surpassed the expectation levels in terms of performance delivered and objectives achieved. Over the last couple of years, it has been a common scenario to observe companies making huge tech investments as a part of their digital transformation journey. On the same lines, cloud companies see new opportunities by fusing Edge computing and AI, or Edge AI. This form of AI has left everyone spellbound with the impact it has left behind. Virtual assistants like Amazon's Alexa and Apple's Siri that have dominated the world of late are a result of Edge AI Here is everything you need to know about Edge AI and beyond. To know about Edge AI, it is important to know about AI and Edge computing individually for the sole reason that the amalgamation of the two would result in Edge AI.
Zero Shot on the Cold-Start Problem: Model-Agnostic Interest Learning for Recommender Systems
Feng, Philip J., Pan, Pingjun, Zhou, Tingting, Chen, Hongxiang, Luo, Chuanjiang
User behavior has been validated to be effective in revealing personalized preferences for commercial recommendations. However, few user-item interactions can be collected for new users, which results in a null space for their interests, i.e., the cold-start dilemma. In this paper, a two-tower framework, namely, the model-agnostic interest learning (MAIL) framework, is proposed to address the cold-start recommendation (CSR) problem for recommender systems. In MAIL, one unique tower is constructed to tackle the CSR from a zero-shot view, and the other tower focuses on the general ranking task. Specifically, the zero-shot tower first performs cross-modal reconstruction with dual auto-encoders to obtain virtual behavior data from highly aligned hidden features for new users; and the ranking tower can then output recommendations for users based on the completed data by the zero-shot tower. Practically, the ranking tower in MAIL is model-agnostic and can be implemented with any embedding-based deep models. Based on the co-training of the two towers, the MAIL presents an end-to-end method for recommender systems that shows an incremental performance improvement. The proposed method has been successfully deployed on the live recommendation system of NetEase Cloud Music to achieve a click-through rate improvement of 13% to 15% for millions of users. Offline experiments on real-world datasets also show its superior performance in CSR. Our code is available.
Amazon's 2nd-gen Echo Buds are on sale for $90
Amazon might have made your choice of true wireless earbuds a little easier. The internet retailer is running a sale on the second-generation Echo Buds that lowers the price to $90 for the standard version, and $105 for the model with a wireless charging case. That makes them less expensive than many no-frills earbuds, let alone ones with comparable features like active noise cancellation. These aren't the absolute best-sounding earbuds you'll buy, but they pair solid quality with perks difficult to find even at their normal prices, including ANC, IPX4 water resistance and built-in Alexa support. These may be just the ticket if you're interested in hushing the outside world or adding a soundtrack to your workouts.