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Fine-grained search interactions in the desktop setting, such as mouse cursor movements and scrolling, have been shown valuable for understanding user intent, attention, and their preferences for Web search results. As web search on smart phones and tablets becomes increasingly popular, previously validated desktop interaction models have to be adapted for(More)
Fine-grained search interactions such as mouse cursor movements and scrolling have been shown to be valuable for modeling user attention and preferences of Web search results, in the desktop setting. However, users increasingly search the Web on touch-enabled devices such as smart phones and tablets, where they zoom and swipe instead of mousing and(More)
While current mobile devices detect the presence of surrounding devices, they lack a truly <i>spatial</i> awareness to bring them into the user's natural 3D space. We present <i>Tracko</i>, a 3D tracking system between two or more commodity devices without added components or device synchronization. Tracko achieves this by fusing three signal types. 1)(More)
We introduce Corona, a novel spatial sensing technique that implicitly locates adjacent mobile devices in the same plane by examining asymmetric Bluetooth Low Energy RSSI distributions. The underlying phenomenon is that the off-center BLE antenna and asymmetric radio frequency topology create a characteristic Bluetooth RSSI distribution around the device.(More)
Despite the prevalence of libraries that provide speech recognition and text-to-speech synthesis " in the cloud " , it remains difficult for developers to create user-friendly, consistent spoken language interfaces to their mobile applications. In this paper, we present the Speechify / Co-hort libraries for rapid speech enabling of Android applications. The(More)
Review comments posted in online websites can help the user decide a product to purchase or place to visit. They can also be useful to closely compare a couple of candidate entities. However, the user may have to read different webpages back and forth for comparison, and this is not desirable particularly when she is using a mobile device. We present(More)
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