Question Answering Methods
QA is very dependent on a good search corpus - for without documents containing the answer, there is little any QA system can do. It thus makes sense that larger collection sizes generally lend well to better QA performance, unless the question domain is orthogonal to the collection. The notion of data redundancy in massive collections, such as the web, means that nuggets of information are likely to be phrased in many different ways in differing contexts and documents, leading to two benefits:
- By having the right information appear in many forms, the burden on the QA system to perform complex NLP techniques to understand the text is lessened.
- Correct answers can be filtered from false positives by relying on the correct answer to appear more times in the documents than instances of incorrect ones.
Read more about this topic: Question Answering
Famous quotes containing the words question, answering and/or methods:
“Nature puts no question and answers none which we mortals ask. She has long ago taken her resolution.”
—Henry David Thoreau (1817–1862)
“Clever people seem not to feel the natural pleasure of bewilderment, and are always answering questions when the chief relish of a life is to go on asking them.”
—Frank Moore Colby (1865–1925)
“The philosopher is in advance of his age even in the outward form of his life. He is not fed, sheltered, clothed, warmed, like his contemporaries. How can a man be a philosopher and not maintain his vital heat by better methods than other men?”
—Henry David Thoreau (1817–1862)