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Machine 
Learning 
for 
Language 
Technology 
Lecture 
11: 
Logis.c 
Regression 
Marina 
San.ni 
Department 
of 
Linguis.cs 
and 
Philology 
Uppsala 
University, 
Uppsala, 
Sweden 
Autumn 
2014 
Acknowledgement: 
Thanks 
to 
Prof. 
Joakim 
Nivre 
for 
course 
design 
and 
materials 
1
”Our 
Linear” 
Classifiers 
and 
their 
Induc.ve 
biases 
(or… 
how 
to 
find 
the 
weights) 
• Perceptron 
(online): 
minimizes 
error 
in 
the 
training 
set 
• SVMs 
(batch): 
minimizes 
error 
in 
the 
training 
set 
and 
maximizes 
margin 
• MIRA 
(online): 
minimizes 
error 
in 
the 
training 
set 
and 
maximizes 
margin 
• Logis.c 
Regression 
(batch): 
maximizes 
the 
likelihood 
of 
the 
training 
data
The 
end

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Lecture11 logistic regression

  • 1. Machine Learning for Language Technology Lecture 11: Logis.c Regression Marina San.ni Department of Linguis.cs and Philology Uppsala University, Uppsala, Sweden Autumn 2014 Acknowledgement: Thanks to Prof. Joakim Nivre for course design and materials 1
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15. ”Our Linear” Classifiers and their Induc.ve biases (or… how to find the weights) • Perceptron (online): minimizes error in the training set • SVMs (batch): minimizes error in the training set and maximizes margin • MIRA (online): minimizes error in the training set and maximizes margin • Logis.c Regression (batch): maximizes the likelihood of the training data