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 Personal Assistant Systems


Reinforcement Learning for Personalized Dialogue Management

arXiv.org Artificial Intelligence

Language systems have been of great interest to the research community and have recently reached the mass market through various assistant platforms on the web. Reinforcement Learning methods that optimize dialogue policies have seen successes in past years and have recently been extended into methods that personalize the dialogue, e.g. take the personal context of users into account. These works, however, are limited to personalization to a single user with whom they require multiple interactions and do not generalize the usage of context across users. This work introduces a problem where a generalized usage of context is relevant and proposes two Reinforcement Learning (RL)-based approaches to this problem. The first approach uses a single learner and extends the traditional POMDP formulation of dialogue state with features that describe the user context. The second approach segments users by context and then employs a learner per context. We compare these approaches in a benchmark of existing non-RL and RL-based methods in three established and one novel application domain of financial product recommendation. We compare the influence of context and training experiences on performance and find that learning approaches generally outperform a handcrafted gold standard.


Alexa can 'listen to users having sex' with some audio heard by Amazon staff, whistleblower claims

Daily Mail - Science & tech

Amazon staff review thousands of audio recordings made by Alexa each day -- including snippets of couples arguing and having sex -- an investigation claims. The clips were accidentally captured by the popular digital assistant -- confusing the noises for the commands it should be listening to -- and sent off for analysis. Staff at the tech firm review one in every five-hundred recordings made by Alexa, whether of deliberate commands to the assistant or accidental recordings. According to a privacy expert, the revelation is a reminder of the extent of the personal information that the tech firm has on its users. Amazon has an English-speaking team monitoring thousands of Alexa recordings daily based in Bucharest, Romania, the Sun claims, along with similar setups in Boston, Costa Rica and India.


MeLU: Meta-Learned User Preference Estimator for Cold-Start Recommendation

arXiv.org Artificial Intelligence

This paper proposes a recommender system to alleviate the cold-start problem that can estimate user preferences based on only a small number of items. To identify a user's preference in the cold state, existing recommender systems, such as Netflix, initially provide items to a user; we call those items evidence candidates. Recommendations are then made based on the items selected by the user. Previous recommendation studies have two limitations: (1) the users who consumed a few items have poor recommendations and (2) inadequate evidence candidates are used to identify user preferences. We propose a meta-learning-based recommender system called MeLU to overcome these two limitations. From meta-learning, which can rapidly adopt new task with a few examples, MeLU can estimate new user's preferences with a few consumed items. In addition, we provide an evidence candidate selection strategy that determines distinguishing items for customized preference estimation. We validate MeLU with two benchmark datasets, and the proposed model reduces at least 5.92% mean absolute error than two comparative models on the datasets. We also conduct a user study experiment to verify the evidence selection strategy.


Doctor Alexa Will See You Now: Is Amazon Primed To Come To Your Rescue?

#artificialintelligence

Now that it's upending the way you play music, cook, shop, hear the news and check the weather, the friendly voice emanating from your Amazon Alexa-enabled smart speaker is poised to wriggle its way into all things health care. Amazon has big ambitions for its devices. It thinks Alexa, the virtual assistant inside them, could help doctors diagnose mental illness, autism, concussions and Parkinson's disease. It even hopes Alexa will detect when you're having a heart attack. At present, Alexa can perform a handful of health care-related tasks: "She" can track blood glucose levels, describe symptoms, access post-surgical care instructions, monitor home prescription deliveries and make same-day appointments at the nearest urgent care center. Amazon has partnered with numerous health care companies, including several in California, to let consumers and employees use Alexa for health care purposes.


Lifelong and Interactive Learning of Factual Knowledge in Dialogues

arXiv.org Artificial Intelligence

Dialogue systems are increasingly using knowledge bases (KBs) storing real-world facts to help generate quality responses. However, as the KBs are inherently incomplete and remain fixed during conversation, it limits dialogue systems' ability to answer questions and to handle questions involving entities or relations that are not in the KB. In this paper, we make an attempt to propose an engine for Continuous and Interactive Learning of Knowledge (CILK) for dialogue systems to give them the ability to continuously and interactively learn and infer new knowledge during conversations. With more knowledge accumulated over time, they will be able to learn better and answer more questions. Our empirical evaluation shows that CILK is promising.


Gartner Predicts 25 Percent of Digital Workers Will Use Virtual Employee Assistants Daily by 2021

#artificialintelligence

The use of virtual assistants (VAs) in the workplace is growing. By 2021, Gartner, Inc. predicts that 25 percent of digital workers will use a virtual employee assistant (VEA) on a daily basis. This will be up from less than 2 percent in 2019. The contact center was the pilot and testing ground for many adopters of VAs, but with the democratization of artificial intelligence (AI) and the development of accurate and clever conversational UIs, different types of VA have arisen: virtual personal assistants (VPAs), virtual customer assistants (VCAs) and VEAs. "We expect VEAs to be used by an increasing number of organizations over the next three years," said Annette Jump, senior director at Gartner.


How to explain machine learning in plain English

#artificialintelligence

Machine learning is already pervasive: Most people probably don't realize it. "Whether or not you know it, odds are that machine learning powers applications that you use every day," says Bill Brock, VP of engineering at Very. "Machine learning has revolutionized countless industries; it's the underlying technology for many apps in your smartphone, from virtual assistants like Siri to predicting traffic patterns with Google Maps." Perhaps you care more about the accuracy of that traffic prediction or the voice assistant's response than what's under the hood โ€“ and understandably so. But as machine learning use cases continue to increase, you will find yourself needing to explain at least the basics of the technology to folks outside of IT, whether it's to get buy-in, to showcase the work of your team, or simply to build better communication and understanding between departments. Your understanding of ML could also bolster the long-term results of your artificial intelligence strategy.


Own a โ€˜smart speakerโ€™? Your voice also transforms it into a fun gaming platform

USATODAY - Tech Top Stories

Coming soon to Alexa speakers, X2 Games and Atari founder Nolan Bushnell will introduce'St. If you own an Amazon Echo, Google Home or other "smart speaker," you're likely aware you can use your voice to play music, order a product, and control your smart home gadgets. But you might not know you can also use your voice to play games, whether you're home alone or with family or friends. "There has never been a more natural way to communicate with technology than using your voice," says Katherine Prescott, founder and editor of VoiceBrew, a digital media company dedicated to helping people get the most out of Alexa, with articles, blog posts, and email newsletters. What dog is the one for you?: How I Met My Dog will tell you RCA's 100th anniversary: How a Russian immigrant changed our communication methods forever Smart speaker usage is growing.


What is AI (Artificial Intelligence)? Security and ethical concerns -

#artificialintelligence

Artificial Intelligence (AI) is the model of human intelligence processes by machines, especially computer systems. These processes include reasoning, learning and self-correction. The specific application of AI provides speech recognition, machine vision and expert systems. Artificial Intelligence can be categorized as either strong AI or weak AI. Strong AI is also called artificial general Intelligence.


Top 7 AI Platforms available for Your Business ELDFROG

#artificialintelligence

AI (Artificial intelligence) is the simulation of human intelligence processes by machines, especially computer systems. These processes include learning (the acquisition of information and rules for using the information), reasoning (using rules to reach approximate or definite conclusions) and self-correction. Particular applications of AI include expert systems, speech recognition and machine vision. If your business has some technical resources, it might be better to use an AI platform to build a custom service. Many platforms allow you to start work without any coding at all, and if you've some web development experience, it will help you to go even further. AI platform can be classified as: -- Weak AI which is generally meant for a particular task.