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:
““When I use a word,” Humpty Dumpty said, in a rather scornful tone, “it means just what I choose it to mean—neither more nor less.” “The question is,” said Alice, “whether you can make words mean so many different things.” “The question is,” said Humpty Dumpty, “which is to be master—that’s all.””
—Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)
“Let the wheel spin out,
Till all created things
With shout and answering shout
Cast off rememberings....”
—Philip Larkin (1922–1986)
“How can you tell if you discipline effectively? Ask yourself if your disciplinary methods generally produce lasting results in a manner you find acceptable. Whether your philosophy is democratic or autocratic, whatever techniques you use—reasoning, a “star” chart, time-outs, or spanking—if it doesn’t work, it’s not effective.”
—Stanley Turecki (20th century)