Natural language question answering (QA) over structured data sources such as tables and knowledge graphs (KGs) have been widely investigated, for example with Large Language Models (LLMs). The main solutions include question to formal query parsing and retrieval-based answer generation. However, current methods of the former often suffer from weak generalization, failing to dealing with multiple sources simultaneously, while the later is limited in trustfulness. In this paper, we propose UnifiedTQA, a trustful QA framework that can simultaneously support multiple types of structured data in a unified way. To this end, it adopts an LLM-friendly and unified knowledge representation method called Condition Graph (CG), and uses an LLM and demonstration-based two-level method for CG querying. For enhancement, it is also equipped with dynamic demonstration retrieval. We have evaluated UnifiedTQA with 5 benchmarks covering 3 types of structured data. It outperforms 2 existing unified structured data QA methods and in comparison with the baselines that are specific to a data type, it achieves state-of-the-art on 2 of them. Further more, we demonstrates potential of our method for more general QA tasks, QA over mixed structured data and QA across structured data.

Amazon Prime Day is winding down, ending in just a few hours (11:59 pm PT to be exact). Most of the deals are for Prime subscribers, but there are great discounts for non-members as well. We've spent hours combing through thousands of deals; these are our favorites on WIRED-tested gear, from Alexa-enabled speakers and robot vacs to laptops and tablets. The WIRED Gear team tests products year-round. We sorted through hundreds of thousands of deals by hand to make these picks. Crossed out products are out of stock or no longer discounted. Our Amazon Prime Day coverage page has the latest stories, and our Prime Day Shopping Tips will help you avoid bad deals. You can also get a 1-year subscription to WIRED for $5 here. Updated July 13: We've added new deals, including the OnePlus 9 Pro, Logitech K380 Keyboard, and Bose QuietComfort 45 Headphones. We've also removed expired deals and updated prices. If you buy something using links in our stories, we may earn a commission. This helps support our journalism. We've got a separate roundup of more great home and kitchen deals right here. There are blenders, and then there are Vitamix blenders. I was skeptical, but like my fellow Gear reviewer Joe Ray, the Vitamix made me a blender person.

Amazon Prime Day is here. The mega-retailer's two-day sales event for Prime subscribers is in full swing, and there are plenty of deals on some of our favorite gear and gadgets, from Alexa-enabled speakers to robot vacs to laptops and tablets. The WIRED Gear team tests products year-round. We sorted through hundreds of thousands of deals by hand to make these picks. Crossed out products are out of stock or no longer discounted. Our Amazon Prime Day coverage page has the latest stories, and our Prime Day Shopping Tips will help you avoid bad deals. You can also get a 1-year subscription to WIRED for $5 here. Updated July 13: We've added five new deals, including JackRabbit eBike, Apollo City 2022 electric scooter, and more. We've also shifted a few sections around to highlight new deals, removed a number of expired deals, and updated prices and links throughout. If you buy something using links in our stories, we may earn a commission. This helps support our journalism. We've got a separate roundup of more great home and kitchen deals right here. There are blenders, and then there are Vitamix blenders. I was skeptical, but like my fellow Gear reviewer Joe Ray, the Vitamix made me a blender person. A blender is, essentially, just a blade atop a motor.

Amazon Prime Day is here. The mega-retailer's two-day sales event for Prime subscribers is in full swing, and there are plenty of deals on some of our favorite gear and gadgets, from Alexa-enabled speakers to robot vacs to laptops and tablets. The WIRED Gear team tests products year-round. We sorted through hundreds of thousands of deals by hand to make these picks. Crossed out products are out of stock or no longer discounted. Our Amazon Prime Day coverage page has the latest stories, and our Prime Day Shopping Tips will help you avoid bad deals. You can also get a 1-year subscription to WIRED for $5 here. Updated July 13: We've added new deals, including the lowest price we've seen on a Covid-19 at-home test kit, removed several expired deals, and updated prices and links throughout. If you buy something using links in our stories, we may earn a commission. This helps support our journalism. Prime Day is the best time to pick up a new Amazon device, whether that's a Kindle, Fire tablet, or Echo speaker--they're unlikely to get cheaper than this. For a complete list, read our Best Prime Day Deals on Amazon Devices roundup. Be sure to also read through our Best Kindles, Best Fire Tablets, and Best Alexa Speakers guides. The Paperwhite is the best overall Kindle.