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Text-dependent Forensic Voice Comparison: Likelihood Ratio Estimation with the Hidden Markov Model (HMM) and Gaussian Mixture Model – Universal Background Model (GMMUBM) Approaches
In: Proceedings of the Australasian Language TechnologyAssociation Workshop 2018 ; https://www.aclweb.org/anthology/U18-1002 (2019)
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A comparative study of likelihood ratio based forensic text comparison procedures: Multivariate kernel density with lexical features vs. word N-grams vs. character N-grams
In: Proceedings - 5th Cybercrime and Trustworthy Computing Conference, CTC 2014 (2016)
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3
Likelihood Ratio-based Forensic Voice Comparison on L2 speakers: A Case of Hong Kong native male production of English vowels
In: Australasian Language Technology Association Workshop 2015 Proceedings of the Workshop ; http://www.alta.asn.au/events/alta2015/proceedings.pdf (2016)
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An acoustic-phonetic descriptive analysis of Kagoshima Japanese tonal phenomena
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Likelihood Ratio-based Forensic Voice Comparison on L2 speakers: A Case of Hong Kong native male production of English vowels
In: Australasian Language Technology Association Workshop 2015 Proceedings of the Workshop ; http://www.alta.asn.au/events/alta2015/proceedings.pdf (2016)
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A comparative study of likelihood ratio based forensic text comparison procedures: Multivariate kernel density with lexical features vs. word N-grams vs. character N-grams
In: Proceedings - 5th Cybercrime and Trustworthy Computing Conference, CTC 2014 (2016)
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7
A likelihood ratio-based forensic text comparison in predatory chatlog messages
In: Selected Papers from the 44th Conference of the Australian Linguistic Society, 2013 (2015)
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8
A Fused Forensic Text Comparison System Using Lexical Features, Word and Character N-grams A Likelihood Ratio-based Analysis in Predatory Chatlog Messages
In: Proceedings of 2014 International Conference on Advances in Computing,Communications and Informatics (ICACCI) (2015)
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9
The Effect of First Language (L1) in Cross-Language Speech Perception: Comparison of Word-Final Stop Discrimination by English, Japanese and Thai Listeners
In: Journal of the Phonetic Society of Japan (Onsei Kenkyu) (2015)
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10
A Likelihood Ratio-Based Forensic Text Comparison in SMS Messages: A Fused System with Lexical Features and N-Grams
Ishihara, Shunichi. - : IGI Global Books, 2015
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11
The Effect of First Language (L1) in Cross-Language Speech Perception: Comparison of Word-Final Stop Discrimination by English, Japanese and Thai Listeners
In: Journal of the Phonetic Society of Japan (Onsei Kenkyu) (2015)
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12
Probabilistic evaluation of sms messages as forensic evidence: Likelihood ratio based approach with lexical features
In: International Journal of Digital Crime and Forensics (2015)
Abstract: This study is one of the first likelihood ratio-based forensic text comparison studies in forensic authorship analysis. The likelihood-ratio-based evaluation of scientific evidence has started being adopted in many disciplines of forensic evidence comparison sciences, such as DNA, handwriting, fingerprints, footwear, voice recording, etc., and it is largely accepted that this is the way to ensure the maximum accountability and transparency of the process. Due to its convenience and low cost, short message service (SMS) has been a very popular medium of communication for quite some time. Unfortunately, however, SMS messages are sometimes used for reprehensible purposes, e.g., communication between drug dealers and buyers, or in illicit acts such as extortion, fraud, scams, hoaxes, and false reports of terrorist threats. In this study, the author performs a likelihood-ratio-based forensic text comparison of SMS messages focusing on lexical features. The likelihood ratios (LRs) are calculated in Aitken and Lucy's (2004) multivariate kernel density procedure, and are calibrated. The validity of the system is assessed based on the magnitude of the LRs using the log-likelihood-ratio cost (Cllr). The strength of the derived LRs is graphically presented in Tippett plots. The results of the current study are compared with those of previous studies.
Keyword: Comparison study; Drug dealers; Forensic evidence; Forensic Text Comparison; Kernel density; Keywords: Authorship analysis; Lexical features; Likelihood ratios; Likelihood Ratios (LRs); Log-Likelihood-Ratio Cost; Low costs; Multivariate Kernel Density; Probabilistic evaluation; Scientific evidence; Short Message Service (SMS) Messages; Short message services; SMS messages; Terroris Calibration
URL: https://doi.org/10.4018/jdcf.2012070104
http://hdl.handle.net/1885/70207
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13
An Acoustic-Phonetic Descriptive Analysis of Kagoshima Japanese Tonal Phenomena
In: Proceedings of the Symposium 'Cross-Linguistic Studies of Tonal Phenomena: Historical Development, Tone-Syntax Interface, and Descriptive Studies' (2015)
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14
An Acoustic Phonetic Comparative Analysis of Osaka and Kagoshima Japanese Tonal Phenomena
In: Proceedings of Interspeech 2008 incorporating SST 2008 (2015)
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15
A Comparative Study on Perception of Foreign-accented Japanese by L2 Japanese Listeners having different L1 backgrounds: English, Chinese and Indonesion
In: Proceedings of the ICPhS XVII 2011 ; http://www.icphs2011.hk/index.htm ; http://research-hub.griffith.edu.au/display/nd4d152a1489d72b1e868096758f290d2 (2015)
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16
A Likelihood Ratio-Based Forensic Text Comparison in SMS Messages: A Fused System with Lexical Features and N-Grams
Ishihara, Shunichi. - : IGI Global Books, 2015
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17
Osaka and Kagoshima Japanese citation tone acoustics: A linguistic-tonetic comparative study
In: Journal of the International Phonetic Association (2015)
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18
A Fused Forensic Text Comparison System Using Lexical Features, Word and Character N-grams A Likelihood Ratio-based Analysis in Predatory Chatlog Messages
In: Proceedings of 2014 International Conference on Advances in Computing,Communications and Informatics (ICACCI) (2015)
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19
Cross-Language Perception of Word-Final Stops: Comparison of Cantonese, Japanese, Korean and Vietnamese Listeners
In: Proceedings of International Congress of Phonetic Sciences 2007 ; http://www.hcsnet.edu.au/node/877 (2015)
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20
An Acoustic Phonetic Comparative Analysis of Osaka and Kagoshima Japanese Tonal Phenomena
In: Proceedings of Interspeech 2008 incorporating SST 2008 (2015)
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