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Understanding Short Texts
CCKS 2016 Tutorial
Outline
• Part 1: Challenges
• Part 2: Explicit representation
• Part 3. Implicit representation
• Part 4: Conclusion
Short Text
• Search Query
• Ad keyword
• Anchor text
• Image Tag
• Document Title
• Caption
• Question
• Tweet/Weibo
Challenges
• First, short texts contain limited context
39.72%
23.53%
14.24%
8.65%
5.45%
2.94%
1.83%
1.08%
2.55%
(a) By Traffic
1 word
2 words
3 words
4 words
5 words
6 words
7 words
8 words
more than 8 words
4.45%
13.57%
21.06%
19.06%
13.94%
8.87%
5.73%
3.68%
9.67%
(b) By # of distinct queries
1 word
2 words
3 words
4 words
5 words
6 words
7 words
8 words
more than 8 words
Based on Bing query log between 06/01/2016 and 06/30/2016
Challenges
• Second, “telegraphic”: no word order, no function
words, no capitalization, …
Hang Li, “Learning to Match for Natural Language Processing and Information Retrieval”
• "how far" earth sun
• "how far" sun
• "how far" sun earth
• average distance earth sun
• average distance from earth
to sun
• average distance from the
earth to the sun
• distance between earth &
sun
• distance between earth and
sun
• distance between earth and
the sun
• distance from earth to the
sun
• distance from sun to earth
• distance from sun to the
earth
• distance from the earth to
the sun
• distance from the sun to
earth
• distance from the sun to the
earth
• distance of earth from sun
• distance between earth sun
• how far away is the sun
from earth
• how far away is the sun
from the earth
• how far earth from sun
• how far earth is from the
sun
• how far from earth is the
sun
• how far from earth to sun
• how far from the earth to
the sun
• distance between sun and
earth
Query “Distance between Sun and Earth” can also be expressed as:
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