7. The method as recited in claim 5 , wherein the generation parameters for a given source include, a probability α s that the given source, when asked to construct a text instance, picks a word from a true title, and a probability β s that the given source, when asked to construct the text instance, picks a word from the context webpage.
5. A method for generating a link title, the method comprising: determining a context webpage URL (Uniform Resource Locator) and a link URL to be shown as a web result, wherein the link URL is embedded inside the context webpage; evaluating generation parameters for a plurality of sources, the generation parameters indicating a probability of the corresponding source for picking words from a link title for the link URL; generating a plurality of candidates for the link title; computing a likelihood for each candidate considering the generation parameters, the context webpage and words from the plurality of sources; selecting a candidate with a highest likelihood; and presenting to a user the context webpage URL and the link URL, wherein the selected candidate is presented as the link title for the link URL.