Abstract: Described herein are techniques for providing a dictionary capabilities associated with foreign language learning content items. In some cases, a foreign language learning application operation on a device may cause definitions associated with a word to be displayed on a display of the device concurrently with the word and at least some text surrounding the word. In some cases, the definitions may be provided in the language of the content item and in a language native the user.

Abstract: Described herein are techniques for improving foreign language learning of a user. In some cases, the system may present text in a foreign language to the user while outputting audio associated with the text. At various periods, the system may prompt the user to rate the difficulty associated with the text and based at least in part on the difficulty rating presenting the user with various options to alter the experience associated with consuming the text to improve the users foreign language absorption rate.

Abstract: Described herein are techniques for improving foreign language learning of a user. In some cases, the system may present text in a foreign language to the user while outputting audio associated with the text. At various periods, the system may prompt the user to rate the difficulty associated with the text and based at least in part on the difficulty rating presenting the user with various options to alter the experience associated with consuming the text to improve the users foreign language absorption rate.

Abstract: The database organization and searching systems disclosed herein provide techniques for organizing large-scale image data sources such as medical image databases. Database records such as medical images may be pre-processed, such as through registration, segmentation, and extraction of feature vectors, to effectively normalize data among different images. Each image, or a portion thereof, is then labeled according to some observed characteristic or other attribute. A model, such as a linear regression model, may then be trained to associate the feature vectors with the labels. The model is then available for labeling other images. In this manner, search techniques for well-organized or indexed databases may be applied automatically to databases that are not well-organized, but that have the same underlying data type. Data that is organized in this way may also be used to construct diagnostic aids or other tools.