The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The ambiguity of query terms is a major obstacle for performance in information retrieval. Clarity or ambiguity scores measure how often terms appear together with different other terms by applying the Kullback-Leibler Divergence. These scores have been used to predict the performance of queries. We calculated the clarity scores within a large patent collection and compared the ambiguity of terms...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.