Publications

2005

J. Saastamoinen, E. Karpov, V. Hautamäki and P. Fränti, "Accuracy of MFCC based speaker recognition in series 60 device", Journal of Applied Signal Processing. (accepted)

M. Xu, X. Wu and P. Fränti, "Context quantization by kernel fisher discriminant", IEEE Transactions on Image Processing. (accepted)

T. Kinnunen, E. Karpov and P. Fränti, "Real-time speaker identification and verification", IEEE Transactions on Signal Processing, 13 (6), November 2005. (in press)

R. Bednarik, T. Kinnunen, A. Mihaila and P. Fränti, "Eye-movements as a biometric", Scandinavian Conf. on Image Analysis (SCIA'05), Joensuu, Finland, LNCS vol. 3540, 780-789, June 2005.

S. Cherednichenko, V. Hautamäki, T. Kinnunen, I. Kärkkäinen and P. Fränti, "Improving k-means by outlier removal", Scandinavian Conf. on Image Analysis (SCIA'05), Joensuu, Finland, LNCS vol. 3540, 978-987, June 2005.

I. Cleju, P. Fränti, X. Wu, "Clustering based on principal curve", Scandinavian Conf. on Image Analysis (SCIA'05), Joensuu, Finland, LNCS vol. 3540, 872-881, June 2005.

T. Niemi-Laitinen, J. Saastamoinen, T. Kinnunen, and P. Fränti, "Applying MFCC-based automatic speaker recognition to GSM and forensic data", 2nd Baltic Conf. on Human Language Technologies (HLT'05), 317-322, Tallinn, Estonia, April 2005.

2004

I. Kärkkäinen and P. Fränti, "Variable metric for binary vector quantization", IEEE Int. Conf. on Image Processing (ICIP'04), Singapore, vol. 3, 3499-3502, October 2004.

M. Xu and P. Fränti, "A heuristic k-means clustering algorithm by kernel PCA", IEEE Int. Conf. on Image Processing (ICIP'04), Singapore, vol. 3, 3503-3506, October 2004.

T. Kinnunen, E. Karpov and P. Fränti, "Real-time speaker identification", Int. Conf. on Spoken Language Processing, (ICSLP'04), Jeju Island, Korea, vol 3, 1805-1808, October 2004.

T. Kinnunen, E. Karpov and P. Fränti, "Efficient online cohort selection method for speaker verification", Int. Conf. on Spoken Language Processing, (ICSLP'04), Jeju Island, Korea, vol 3, 2401-2405, October 2004.

J. Saastamoinen, E. Karpov, V. Hautamäki and P. Fränti, "Automatic speaker recognition for series 60 mobile devices", SPECOM'2004, St. Petersburg, Russia, 353-360, September 2004.

T. Kinnunen, V. Hautamäki and P. Fränti, "Fusion of spectral feature sets for accurate speaker identification", SPECOM'2004, St. Petersburg, Russia, 361-365, September 2004.

E. Karpov, T. Kinnunen and P. Fränti, "Symmetric distortion measure for speaker recognition", SPECOM'2004, St. Petersburg, Russia, 366-370, September 2004.

O. Virmajoki and P. Fränti, "Divide-and-conquer algorithm for creating neighborhood graph for clustering", IAPR Int. Conf. on Pattern Recognition (ICPR'04), Cambridge, UK, vol. 1, 264-267, August 2004.

V. Hautamäki, I. Kärkkäinen and P. Fränti, "Outlier detection using k-nearest neighbour graph", IAPR Int. Conf. on Pattern Recognition (ICPR'04), Cambridge, UK, vol. 3, 430-433, August 2004.

M. Xu and P. Fränti, "Delta-MSE dissimilarity in suboptimal K-means clustering", IAPR Int. Conf. on Pattern Recognition (ICPR'04), Cambridge, UK, vol. 4, 577-580, August 2004.

M. Xu and P. Fränti, "Iterative k-means algorithm based on Fisher discriminant", Int. Conf. on Information Fusion, Stockholm, Sweden, vol. 1, 70-73, June 2004.

M. Xu, "Delta-MSE dissimilarity in GLA based vector quantization", IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP'04), Montreal, Canada, vol.5, 813-816, August 2004.

2003

J. Kivijärvi, P. Fränti and O. Nevalainen, "Self-adaptive genetic algorithm for clustering", Journal of Heuristics, 9 (2), 113-129, March 2003.

P. Fränti, M. Xu and I. Kärkkäinen, "Classification of binary vectors by using DeltaSC-distance to minimize stochastic complexity", Pattern Recognition Letters, 24 (1-3), 65-73, January 2003.

T. Kinnunen, V. Hautamäki and P. Fränti, "On the fusion of dissimilarity- based classifiers for speaker identification", European Conf. on Speech Communiation and Technology, (Eurospeech'2003), Geneva, Switzerland, 2641-2644, September 2003.

T. Kinnunen, E. Karpov, P. Fränti: "A Speaker Pruning Algorithm for Real-Time Speaker Identification", Int. Conf. on Audio- and Video-Based Biometric Person Authentication (AVBPA'03), Guilford, UK, 639-646, June 2003.

2002

O. Virmajoki, P. Fränti and T. Kaukoranta, "Iterative shrinking method for generating clustering", IEEE Int. Conf. on Image Processing (ICIP'02), Rochester, New York, USA, vol. 2, 685-688, September 2002.

T. Kinnunen, "Designing a speaker-discriminative adaptive filter bank for speaker recognition", Int. Conf. on Spoken Language Processing Denver, Colorado, USA, 2325-2328, September 2002.

P. Fränti and O. Virmajoki, "Polynomial-time clustering algorithms derived from branch-and-bound technique", Advanced Concepts for Intelligent Vision Systems (ACIVS'2002), Gent, Belgium, 118-123, September 2002.

I. Kärkkäinen and P. Fränti, "Stepwise algorithm for finding unknown number of clusters", Advanced Concepts for Intelligent Vision Systems (ACIVS'2002), Gent, Belgium, 136-143, September 2002.

P. Fränti and M. Xu, "Genetic local repartition for solving dynamic clustering problems", Int. Conf. on Signal Processing (ICSP'02), Beijing, China, vol. 2, 1128-1133, August 2002.

P. Fränti, O. Virmajoki and T. Kaukoranta, "Branch-and-bound technique for solving optimal clustering", Int. Conf. on Pattern Recognition (ICPR'02), Québec, Canada, vol. 2, 232-235, August 2002.

T. Kinnunen and I. Kärkkäinen, "Class-Discriminative Weighted Distortion Measure for VQ-Based Speaker Identification". Joint IAPR Int. Workshop on Statistical Pattern Recognition (SPR'2002), Windsor, Canada, 681-688, August 2002.

P. Fränti and M. Xu, "Classification of binary vectors by using DSC-distance", Int. Conf. on Pattern Recognition (ICPR'02), Québec, Canada, vol. 2, 52-55, August 2002.

I. Kärkkäinen and P. Fränti, "Dynamic local search for clustering with unknown number of clusters", Int. Conf. on Pattern Recognition (ICPR'02), Québec, Canada, vol. 2, 240-243, August 2002.

2001

O. Virmajoki, P. Fränti and T. Kaukoranta, "Practical methods for speeding-up the PNN method", Optical Engineering, 40 (11), 2495-2504, November 2001.

O. Virmajoki, P. Fränti and T. Kaukoranta, "Fast PNN using mean-distance ordered search", Int. Conf. on Information, Communications and Signal Processing (ICICS'01), Singapore, October, 2001.

O. Virmajoki, P. Fränti and T. Kaukoranta, "Fast PNN using partial distortion search", Int. Conf. on Computer Analysis of Images and Patterns (CAIP'01), Warsaw, Poland, pp. 77-84, September, 2001.

T. Kinnunen, I. Kärkkäinen and P. Fränti, "Is speech data clustered? - statistical analysis of cepstral features", European Conf. on Speech Communiation and Technology, (EUROSPEECH'2001), Aalborg, Denmark, Vol. 4, pp. 2627-2630, September, 2001.

T. Kinnunen and P. Fränti, "Speaker discriminative weighting method for VQ-based speaker identification", Int. Conf. on Audio- and Video-Based Biometric Person Authentication (AVBPA'01), Halmstad, Sweden, 150-156, June 2001.

2000

P. Fränti, "Genetic algorithm with deterministic crossover for vector quantization", Pattern Recognition Letters, 21 (1), 61-68, 2000.

P. Fränti, H.G. Gyllenberg, M. Gyllenberg, J. Kivijärvi, T. Koski, T. Lund and O. Nevalainen, "Minimizing stochastic complexity using local search and GLA with applications to classification of bacteria", Biosystems, 57 (1), 37-48, June 2000.

P. Fränti, T. Kaukoranta, D.-F. Shen and K.-S. Chang, "Fast and memory efficient implementation of the exact PNN", IEEE Transactions on Image Processing, 9 (5), 773-777, May 2000.

P. Fränti and J. Kivijärvi, "Randomized local search algorithm for the clustering problem", Pattern Analysis and Applications, 3 (4), 358-369, 2000.

T. Kaukoranta, P. Fränti and O. Nevalainen, "A fast exact GLA based on code vector activity detection", IEEE Trans. on Image Processing, 9 (8), 1337-1342, August 2000.

T. Kinnunen, T. Kilpeläinen and P. Fränti, "Comparison of clustering algorithms in speaker identification", IASTED Int. Conf. on Signal Processing and Communications (SPC'00), Marabella, Spain,222-227, 2000.

J. Kivijärvi, P. Fränti and O. Nevalainen, "Efficient clustering with a self-adaptive genetic algorithm", SCI'2000, Orlando, Florida, USA, 241-246, vol. 3, 2000.

I. Kärkkäinen and P. Fränti, "Minimization of the value of Davies-Bouldin index", IASTED Int. Conf. on Signal Processing and Communications (SPC'00), Marabella, Spain, 426-432, 2000.

1999

P. Fränti, "On the usefulness of self-organizing maps for the clustering problem in vector quantization", Proc. 11th Scandinavian Conf. on Image Analysis (SCIA99), Kangerlussuaq, Greenland, 415-422, 1999.

P. Fränti and T. Kaukoranta, "Binary vector quantizer design using soft centroids", Signal Processing: Image Communication, 14 (9), 677-681, 1999.

P. Fränti and J. Kivijärvi, "Random swapping technique for improving clustering in unsupervised classification", Proc. 11th Scandinavian Conf. on Image Analysis (SCIA99), Greenland, 407-413, 1999.

T. Kaukoranta, "Iterative and hierarchical methods for codebook generation in vector quantization", TUCS Dissertations No 22, Turku, 1999.

T. Kaukoranta, P. Fränti and O. Nevalainen, "Vector quantization by lazy pairwise nearest neighbor method", Optical Engineering, 38 (11), 1862-1868, November 1999.

T. Kinnunen, "Automaattinen puhujan tunnistus" (Automatic speaker recognition), Pro gradu -tutkielma, Tietojenkäsittelytieteen laitos, Joensuun yliopisto, 1999. (in Finnish)

I. Kärkkäinen, "Ryhmien lukumäärän selvittäminen ryhmittelyanalyysissa" (Solving the number of clusters in cluster analysis) Pro gradu -tutkielma, Tietojenkäsittelytieteen laitos, Joensuun yliopisto, 1999. (in Finnish)

1998

P. Fränti, J. Kivijärvi and O. Nevalainen: "Tabu search algorithm for codebook generation in VQ", Pattern Recognition, 31 (8), 1139-1148, August 1998.

T. Kaukoranta, P. Fränti and O. Nevalainen "Iterative split-and-merge algorithm for VQ codebook generation", Optical Engineering, 37 (10), 2726-2732, October 1998.

J. Kivijärvi, "Optimointimenetelmien soveltaminen klusterointiongelmaan, erityisesti vektorikvantisointiin" (Application of optimization methods for the clustering problem), Pro gradu -tutkielma, Matemaattisten tieteiden laitos, Turun yliopisto, 1998. (in Finnish)

1997

P. Fränti, J. Kivijärvi, T. Kaukoranta and O. Nevalainen: "Genetic algorithms for large scale clustering problem", The Computer Journal, 40 (9), 547-554, 1997.

P. Fränti, T. Kaukoranta and O. Nevalainen: "On the Splitting Method for VQ Codebook Generation", Optical Engineering, 36 (11), 3043-3051, November 1997.

Links to conferences:

IEEE International Conference on Image Processing (ICIP 2002)
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2002)
IEEE International Conference on Data Mining (ICDM 2002)
IEEE Data Compression Conference (DCC)
IAPR International Conference on Pattern Recognition (ICPR 2002)
First European Workshop on Evolutionary Computation in Image Analysis and Signal Processing (EvoIASP 99)
ACM Multimedia 2000
Electronic Imaging (SPIE EI)
Genetic and Evolutionary Computation Conference (GECCO 2000)
IEEE International Conference on Computer Vision (ICCV 99)
International Conference on Image Analysis and Processing (ICIAP 99)
International ICSC Symposium on Computational Intelligence (CI 2000)
Scandinavian Conference on Image Analysis (SCIA 99)