23. 1 2 46 1 27 8 5 10 11 13 14 7
[Basic Idea]
人間動作における二重分節構造
Unsegmented
human motion
Unit motion
W H A T I S T H I S T H I S I S A P E NLetter
Word
Label of
Hidden states
[1 2 7 6 4] [8 5 10] [11 13] [1 2 7 6 4][14]
[WHAT] [IS] [THIS] [THIS] [IS] [A] [PEN]
Audio Data
Elemental
motion
2013/6/14 SCI2013@神戸 25
25. Double Articulation Structure
観測された時系列情
報だけから,背後に
潜む語彙知識,二重
分節構造を獲得する.
条件
単語数未知
文字数(隠れ状態
数)未知
出力分布パラメータ
未知
Language Model
Segment
Chunk
afa
?
fd
Tadahiro Taniguchi, Shogo Nagasaka “Double Articulation Analyzer for Unsegmented Human Motion using
Pitman-Yor Language model and Infinite Hidden Markov Model” 2011 IEEE/SICE International Symposium on
System Integration, .(2011)
2013/6/14 SCI2013@神戸 27
26. High-dimensional motion data
motion data
5213….4213….321….02131341415 ….
Document
5213 ….4213 ….321 ….[0] ,[2,1,3],[1],[3,4], …
Segmented document
Modeling & Encoding
Chunking & Extraction
NPYLM
Sticky
HDP-HMM
Unit motions
Unit motions
Unit motion
[2,1,3]
[3,4]
Elemental motion
Approximate Inference Procedure of
Double Articulation Analyzer
Tadahiro Taniguchi, Shogo Nagasaka “Double Articulation Analyzer for Unsegmented Human Motion using
Pitman-Yor Language model and Infinite Hidden Markov Model” 2011 IEEE/SICE International Symposium on
System Integration, .(2011)
2013/6/14 SCI2013@神戸 28
36. 不完全文へのベイズ教師なし形
態素解析の拡張
Prediction of hidden states sequence
Giving theoretical probability to
incomplete hidden words
Tadahiro Taniguchi, Shogo Nagasaka, Kentarou Hitomi, Naiwala P. Chandrasiri, and Takashi Bando
Semiotic Prediction of Driving Behavior using Unsupervised Double Articulation Analyzer
2012 IEEE Intelligent Vehicles Symposium, 849 - 854 .(2012)
2013/6/14 SCI2013@神戸 38
37. 二重分節解析器を用いた運転状態系列の予測
Collaborative work with DENSO
Published in Intelligent Vehicle 2012
View from driver’s seat
Averaged number of correctly
predicted hidden states Histogram
1st course
2nd course
Start/Goal
(1st -5th track)
(6th ~10th track)
2013/6/14 SCI2013@神戸 39
38. Drive Video Summarization based
on Double Articulation
Structure of Driving Behavior
Kazuhito Takenaka, Takashi Bando, Shogo Nagasaka, Tadahiro Taniguchi, "Drive
Video Summarization based on Double Articulation Structure of Driving Behavior",
ACM multim media 2012, to appear
Tadahiro Taniguchi, Shogo Nagasaka “Double Articulation Analyzer for Unsegmented Human Motion using
Pitman-Yor Language model and Infinite Hidden Markov Model” 2011 IEEE/SICE International Symposium on
System Integration, .(2011)
2013/6/14 SCI2013@神戸 40