Faceted navigation can effectively reduce user efforts of reaching targeted resources in databases, by suggesting dynamic facet values for iterative query refinement. A key issue is minimizing the navigation cost in a user query session. Conventional navigation scheme assumes that at each step, users select only one suggested value to figure out resources containing it. To make faceted navigation more flexible and effective, this paper introduces a multi-select scheme where multiple suggested values can be selected at one step, and a selected value can be used to either retain or exclude the resources containing it. Previous algorithms for cost-driven value suggestion can hardly work well under our navigation scheme. Therefore, we propose to optimize the navigation cost using the Minimum Description Length principle, which can well balance the number of navigation steps and the number of suggested values per step under our new scheme. An emperical study demonstrates that our approach is more cost-saving and efficient than state-of-the-art approaches.
This article originally appeared in the Motley Fool. One area where Tesla's (NASDAQ:TSLA) lead in the auto industry goes unquestioned is its ability to quickly and regularly deploy meaningful software updates to its vehicles. Past notable software updates have included things as simple as updates to the sound and air conditioning systems to more exciting features like quicker acceleration times and new Autopilot driving features. Tesla is about to flex its prowess in software yet again this weekend, with CEO Elon Musk promising on Twitter on Sunday that it will start rolling out its entirely new navigation system and updated maps to its vehicles over the upcoming weekend. Highlighting how significant this update will be, the new navigation system not only provides a one-time major update to the navigation system itself and to the underlying maps, but it will also improve the upgradeability of a rare aspect of Tesla vehicles that was previously difficult to improve with software updates.
Waze has a number of measures to reduce distractions and keep your eyes on the road ahead, but there has been one inescapable distraction: you usually have to touch the screen to get things done. That's a problem, especially in areas where distracted driving laws make it illegal to poke at your phone while on the move. It shouldn't be a problem for much longer. Waze's latest update includes a hands-free navigation option that lets you handle most tasks using only your voice. Say "OK, Waze" and you can navigate to a destination or report a traffic jam without losing focus.
GPS is vital to modern navigation, but it's extremely fragile. Never mind coverage -- if a satellite fails or there's a jamming attack, it quickly becomes useless. Scientists may have a much more robust answer, though. Scientists have demonstrated a "commercially viable" quantum accelerometer that could provide navigation without GPS or other satellite technology. The device uses lasers to cool atoms to extremely low temperatures, and then measures the quantum wave properties of those atoms as they respond to acceleration.
We now have data that suggests Sidebar menus--sometimes called Hamburger Menus/Basements--might be causing more harm than good. One thing to have in mind is that this is a nuanced issue. I've observed these issues in user testing and others have also gone through the same realization. I only ask you to read the problems, solutions and be aware of the consequences before committing to this pattern. In its default state, the Sidebar Menu and all of its contents remain hidden.