Frequently Asked Questions
- Why is Powerset search limited to Wikipedia?
- Wikipedia is a primary destination for millions of people worldwide who want to find high-quality, detailed information on a wide array of topics. By initially focusing on the Wikipedia collection, Powerset showcases how our technology not only improves search results, but provides new ways to aggregate, summarize and navigate information. Of course Wikipedia is only a starting point. In the coming months, Powerset will expand our product offerings with additional premium content and exciting new features.
- What is Freebase?
- In addition to Wikipedia, Powerset provides instant answers and dossiers from Freebase, an open, community developed database of the world’s information provided by Metaweb.
- What does the name “Powerset” mean?
- In mathematics, the powerset of a set S, usually written P(S), is the set of all possible subsets of S. You can read more on the powerset page.
- What are Factz?
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Factz are concise representations of information extracted from sentences. They are represented in three parts: the subject, relation and object (e.g. Oswald shot JFK). Factz are one way that Powerset represents the meaning of a sentence. Of course, Factz do not always represent truth, but rather propositions that are asserted in the text of Wikipedia.
On the search results page, you will often see Factz for general topic queries. These Factz are collected from pages across Wikipedia. Click a word in one of the three columns to see the sentences that support the selected fact.
On a particular topic page, you can see the Factz extracted from the given page in the outline. Click on one to scroll directly to the sentence from which the fact was derived.
- What browsers does Powerset support?
- For the best experience, Powerset recommends using Firefox 2, Safari 3, or Internet Explorer 7. Some functionality may not be available in Safari 2, IE6 and Opera.