| Hits ?▲ |
Authors |
Title |
Venue |
Year |
Link |
Author keywords |
| 1 | Aleksi Kallio, Niko Vuokko, Markus Ojala, Niina Haiminen, Heikki Mannila |
Randomization techniques for assessing the significance of gene periodicity results.  |
BMC Bioinformatics  |
2011 |
DBLP DOI BibTeX RDF |
|
| 1 | Gemma C. Garriga, Esa Junttila, Heikki Mannila |
Banded structure in binary matrices.  |
Knowl. Inf. Syst.  |
2011 |
DBLP DOI BibTeX RDF |
|
| 1 | Heikki Mannila |
Permutation Structure in 0-1 Data.  |
ECML/PKDD  |
2011 |
DBLP DOI BibTeX RDF |
|
| 1 | Jefrey Lijffijt, Panagiotis Papapetrou, Kai Puolamäki, Heikki Mannila |
Analyzing Word Frequencies in Large Text Corpora Using Inter-arrival Times and Bootstrapping.  |
ECML/PKDD  |
2011 |
DBLP DOI BibTeX RDF |
|
| 1 | Panagiotis Papapetrou, Aristides Gionis, Heikki Mannila |
A Shapley Value Approach for Influence Attribution.  |
ECML/PKDD  |
2011 |
DBLP DOI BibTeX RDF |
|
| 1 | Tapio Elomaa, Jaakko Hollmén, Heikki Mannila (eds.) |
Discovery Science - 14th International Conference, DS 2011, Espoo, Finland, October 5-7, 2011. Proceedings  |
Discovery Science  |
2011 |
DBLP DOI BibTeX RDF |
|
| 1 | Niina Haiminen, Heikki Mannila |
Evaluation of BIC and Cross Validation for model selection on sequence segmentations.  |
IJDMB  |
2010 |
DBLP DOI BibTeX RDF |
|
| 1 | Markus Ojala, Gemma C. Garriga, Aristides Gionis, Heikki Mannila |
Evaluating Query Result Significance in Databases via Randomizations.  |
SDM  |
2010 |
DBLP BibTeX RDF |
|
| 1 | Tapio Elomaa, Heikki Mannila, Pekka Orponen (eds.) |
Algorithms and Applications, Essays Dedicated to Esko Ukkonen on the Occasion of His 60th Birthday  |
Algorithms and Applications  |
2010 |
DBLP BibTeX RDF |
|
| 1 | Panu Luosto, Jyrki Kivinen, Heikki Mannila |
Gaussian Clusters and Noise: An Approach Based on the Minimum Description Length Principle.  |
Discovery Science  |
2010 |
DBLP DOI BibTeX RDF |
|
| 1 | Theodoros Lappas, Evimaria Terzi, Dimitrios Gunopulos, Heikki Mannila |
Finding effectors in social networks.  |
KDD  |
2010 |
DBLP DOI BibTeX RDF |
social networks, graph algorithms, information propagation |
| 1 | Ella Bingham, Heikki Mannila |
Complexity control in a mixture model by the Hardy-Weinberg equilibrium.  |
Computational Statistics & Data Analysis  |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Muhammed Miah, Gautam Das, Vagelis Hristidis, Heikki Mannila |
Determining Attributes to Maximize Visibility of Objects.  |
IEEE Trans. Knowl. Data Eng.  |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Antti Ukkonen, Kai Puolamäki, Aristides Gionis, Heikki Mannila |
A randomized approximation algorithm for computing bucket orders.  |
Inf. Process. Lett.  |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Tomás Feder, Heikki Mannila, Evimaria Terzi |
Approximating the Minimum Chain Completion problem.  |
Inf. Process. Lett.  |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Markus Ojala, Niko Vuokko, Aleksi Kallio, Niina Haiminen, Heikki Mannila |
Randomization methods for assessing data analysis results on real-valued matrices.  |
Statistical Analysis and Data Mining  |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Heikki Mannila, Dimitrios Gunopulos |
ACM TKDD special issue ACM SIGKDD 2007 and ACM SIGKDD 2008.  |
TKDD  |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Markus Ojala, Gemma C. Garriga, Aristides Gionis, Heikki Mannila |
Query Significance in Databases via Randomizations  |
CoRR  |
2009 |
DBLP BibTeX RDF |
|
| 1 | Huseyin Hakkoymaz, Georgios Chatzimilioudis, Dimitrios Gunopulos, Heikki Mannila |
Applying Electromagnetic Field Theory Concepts to Clustering with Constraints.  |
ECML/PKDD  |
2009 |
DBLP DOI BibTeX RDF |
User Constraints, Electromagnetic Field Theory, Data Clustering |
| 1 | Hannes Heikinheimo, Jilles Vreeken, Arno Siebes, Heikki Mannila |
Low-Entropy Set Selection.  |
SDM  |
2009 |
DBLP BibTeX RDF |
|
| 1 | Heikki Mannila, Evimaria Terzi |
Finding Links and Initiators: A Graph-Reconstruction Problem.  |
SDM  |
2009 |
DBLP BibTeX RDF |
|
| 1 | Heikki Mannila |
Randomization Methods for Assessing the Significance of Data Mining Results.  |
ISMIS  |
2009 |
DBLP DOI BibTeX RDF |
|
| 1 | Heikki Mannila |
Randomization methods in data mining.  |
KDD  |
2009 |
DBLP DOI BibTeX RDF |
empirical p-value, null model, data mining, randomization |
| 1 | Sami Hanhijärvi, Markus Ojala, Niko Vuokko, Kai Puolamäki, Nikolaj Tatti, Heikki Mannila |
Tell me something I don't know: randomization strategies for iterative data mining.  |
KDD  |
2009 |
DBLP DOI BibTeX RDF |
inverse frequent set mining, matrix randomization, statistical significance |
| 1 | Kai Puolamäki, Heikki Mannila, Alessio Bertone, Silvia Miksch (eds.) |
Proceedings of the ACM SIGKDD Workshop on Visual Analytics and Knowledge Discovery: Integrating Automated Analysis with Interactive Exploration, Paris, France, June 28, 2009  |
KDD Workshop on Visual Analytics and Knowledge Discovery  |
2009 |
DBLP BibTeX RDF |
|
| 1 | Pauli Miettinen, Taneli Mielikäinen, Aristides Gionis, Gautam Das, Heikki Mannila |
The Discrete Basis Problem.  |
IEEE Trans. Knowl. Data Eng.  |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Niina Haiminen, Heikki Mannila, Evimaria Terzi |
Determining significance of pairwise co-occurrences of events in bursty sequences.  |
BMC Bioinformatics  |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Robert Gwadera, Aristides Gionis, Heikki Mannila |
Optimal segmentation using tree models.  |
Knowl. Inf. Syst.  |
2008 |
DBLP DOI BibTeX RDF |
Sequence segmentation, DNA segmentation, Sequence data mining, MDL |
| 1 | Heikki Mannila, Evimaria Terzi |
Finding links and initiators: a graph reconstruction problem  |
CoRR  |
2008 |
DBLP BibTeX RDF |
|
| 1 | Bart Goethals, Wim Le Page, Heikki Mannila |
Mining Association Rules of Simple Conjunctive Queries.  |
SDM  |
2008 |
DBLP BibTeX RDF |
|
| 1 | Arianna Gallo, Pauli Miettinen, Heikki Mannila |
Finding Subgroups having Several Descriptions: Algorithms for Redescription Mining.  |
SDM  |
2008 |
DBLP BibTeX RDF |
|
| 1 | Markus Ojala, Niko Vuokko, Aleksi Kallio, Niina Haiminen, Heikki Mannila |
Randomization of real-valued matrices for assessing the significance of data mining results.  |
SDM  |
2008 |
DBLP BibTeX RDF |
|
| 1 | Muhammed Miah, Gautam Das, Vagelis Hristidis, Heikki Mannila |
Standing Out in a Crowd: Selecting Attributes for Maximum Visibility.  |
ICDE  |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Heikki Mannila |
Finding Total and Partial Orders from Data for Seriation.  |
ALT  |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Heikki Mannila |
Finding Total and Partial Orders from Data for Seriation.  |
Discovery Science  |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Gemma C. Garriga, Antti Ukkonen, Heikki Mannila |
Feature Selection in Taxonomies with Applications to Paleontology.  |
Discovery Science  |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Heikki Mannila |
Randomization Techniques for Data Mining Methods.  |
ADBIS (local proceedings)  |
2008 |
DBLP BibTeX RDF |
|
| 1 | Heikki Mannila |
Randomization Techniques for Data Mining Methods.  |
ADBIS  |
2008 |
DBLP DOI BibTeX RDF |
|
| 1 | Gemma C. Garriga, Esa Junttila, Heikki Mannila |
Banded structure in binary matrices.  |
KDD  |
2008 |
DBLP DOI BibTeX RDF |
0-1 data, consecutive ones property, banded matrices |
| 1 | Niina Haiminen, Heikki Mannila, Evimaria Terzi |
Comparing segmentations by applying randomization techniques.  |
BMC Bioinformatics  |
2007 |
DBLP DOI BibTeX RDF |
|
| 1 | Niels Landwehr, Taneli Mielikäinen, Lauri Eronen, Hannu Toivonen, Heikki Mannila |
Constrained hidden Markov models for population-based haplotyping.  |
BMC Bioinformatics  |
2007 |
DBLP DOI BibTeX RDF |
|
| 1 | Aristides Gionis, Heikki Mannila, Panayiotis Tsaparas |
Clustering aggregation.  |
TKDD  |
2007 |
DBLP DOI BibTeX RDF |
clustering aggregation, clustering categorical data, Data clustering, correlation clustering |
| 1 | Aristides Gionis, Heikki Mannila, Taneli Mielikäinen, Panayiotis Tsaparas |
Assessing data mining results via swap randomization.  |
TKDD  |
2007 |
DBLP DOI BibTeX RDF |
0-1 data, randomization tests, swaps, Significance testing |
| 1 | Alexander Hinneburg, Heikki Mannila, Samuli Kaislaniemi, Terttu Nevalainen, Helena Raumolin-Brunberg |
How to Handle Small Samples: Bootstrap and Bayesian Methods in the Analysis of Linguistic Change.  |
LLC  |
2007 |
DBLP DOI BibTeX RDF |
|
| 1 | Antti Ukkonen, Heikki Mannila |
Finding Outlying Items in Sets of Partial Rankings.  |
PKDD  |
2007 |
DBLP DOI BibTeX RDF |
|
| 1 | Arjun Dasgupta, Gautam Das, Heikki Mannila |
A random walk approach to sampling hidden databases.  |
SIGMOD Conference  |
2007 |
DBLP DOI BibTeX RDF |
top-k interfaces, sampling, random walk, hidden databases |
| 1 | Saara Hyvönen, Aristides Gionis, Heikki Mannila |
Recurrent Predictive Models for Sequence Segmentation.  |
IDA  |
2007 |
DBLP DOI BibTeX RDF |
|
| 1 | Hannes Heikinheimo, Jouni K. Seppänen, Eino Hinkkanen, Heikki Mannila, Taneli Mielikäinen |
Finding low-entropy sets and trees from binary data.  |
KDD  |
2007 |
DBLP DOI BibTeX RDF |
pattern discovery, local models |
| 1 | Heikki Mannila, Evimaria Terzi |
Nestedness and segmented nestedness.  |
KDD  |
2007 |
DBLP DOI BibTeX RDF |
0-1 matrices, nestedness, presence/absence data |
| 1 | Kai Puolamäki, Mikael Fortelius, Heikki Mannila |
Seriation in Paleontological Data Using Markov Chain Monte Carlo Methods.  |
PLoS Computational Biology  |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Hannes Heikinheimo, Heikki Mannila, Jouni K. Seppänen |
Finding Trees from Unordered 0-1 Data.  |
PKDD  |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Pauli Miettinen, Taneli Mielikäinen, Aristides Gionis, Gautam Das, Heikki Mannila |
The Discrete Basis Problem.  |
PKDD  |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Robert Gwadera, Aristides Gionis, Heikki Mannila |
Optimal Segmentation Using Tree Models.  |
ICDM  |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Nikolaj Tatti, Taneli Mielikäinen, Aristides Gionis, Heikki Mannila |
What is the Dimension of Your Binary Data?  |
ICDM  |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Heikki Mannila |
Finding fragments of orders and total orders from 0-1 data.  |
EGC  |
2006 |
DBLP BibTeX RDF |
|
| 1 | Ella Bingham, Aristides Gionis, Niina Haiminen, Heli Hiisilä, Heikki Mannila, Evimaria Terzi |
Segmentation and dimensionality reduction.  |
SDM  |
2006 |
DBLP BibTeX RDF |
|
| 1 | Antti Rasinen, Jaakko Hollmén, Heikki Mannila |
Analysis of Linux Evolution Using Aligned Source Code Segments.  |
Discovery Science  |
2006 |
DBLP DOI BibTeX RDF |
|
| 1 | Aristides Gionis, Heikki Mannila, Taneli Mielikäinen, Panayiotis Tsaparas |
Assessing data mining results via swap randomization.  |
KDD  |
2006 |
DBLP DOI BibTeX RDF |
0-1 data, randomization tests, swaps, significance testing |
| 1 | Aristides Gionis, Heikki Mannila, Kai Puolamäki, Antti Ukkonen |
Algorithms for discovering bucket orders from data.  |
KDD  |
2006 |
DBLP DOI BibTeX RDF |
bucket order, ranking, partial order, ordering |
| 1 | Marko Salmenkivi, Heikki Mannila |
Using Markov chain Monte Carlo and dynamic programming for event sequence data.  |
Knowl. Inf. Syst.  |
2005 |
DBLP DOI BibTeX RDF |
Data mining, Dynamic programming, MCMC, Event sequence |
| 1 | Marko Salmenkivi, Heikki Mannila |
Piecewise Constant Modeling of Sequential Data Using Reversible Jump Markov Chain Monte Carlo.  |
Data Mining in Bioinformatics  |
2005 |
DBLP BibTeX RDF |
|
| 1 | Spiros Papadimitriou, Aristides Gionis, Panayiotis Tsaparas, Risto A. Väisänen, Heikki Mannila, Christos Faloutsos |
Parameter-Free Spatial Data Mining Using MDL.  |
ICDM  |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Foto N. Afrati, Gautam Das, Aristides Gionis, Heikki Mannila, Taneli Mielikäinen, Panayiotis Tsaparas |
Mining Chains of Relations.  |
ICDM  |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Aristides Gionis, Heikki Mannila, Panayiotis Tsaparas |
Clustering Aggregation.  |
ICDE  |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Jean-François Boulicaut, Luc De Raedt, Heikki Mannila (eds.) |
Constraint-Based Mining and Inductive Databases, European Workshop on Inductive Databases and Constraint Based Mining, Hinterzarten, Germany, March 11-13, 2004, Revised Selected Papers  |
Constraint-Based Mining and Inductive Databases  |
2005 |
DBLP BibTeX RDF |
|
| 1 | Pasi Rastas, Mikko Koivisto, Heikki Mannila, Esko Ukkonen |
A Hidden Markov Technique for Haplotype Reconstruction.  |
WABI  |
2005 |
DBLP DOI BibTeX RDF |
|
| 1 | Antti Ukkonen, Mikael Fortelius, Heikki Mannila |
Finding partial orders from unordered 0-1 data.  |
KDD  |
2005 |
DBLP DOI BibTeX RDF |
hidden ordering, partial order, consecutive ones property |
| 1 | Usama M. Fayyad, Heikki Mannila, Raghu Ramakrishnan |
Editorial.  |
Data Min. Knowl. Discov.  |
2004 |
DBLP DOI BibTeX RDF |
|
| 1 | Usama M. Fayyad, Heikki Mannila, Raghu Ramakrishnan |
Editorial.  |
Data Min. Knowl. Discov.  |
2004 |
DBLP DOI BibTeX RDF |
|
| 1 | Aristides Gionis, Heikki Mannila, Jouni K. Seppänen |
Geometric and Combinatorial Tiles in 0-1 Data.  |
PKDD  |
2004 |
DBLP DOI BibTeX RDF |
|
| 1 | Jouni K. Seppänen, Heikki Mannila |
Boolean Formulas and Frequent Sets.  |
Constraint-Based Mining and Inductive Databases  |
2004 |
DBLP DOI BibTeX RDF |
|
| 1 | Floris Geerts, Heikki Mannila, Evimaria Terzi |
Relational link-based ranking.  |
VLDB  |
2004 |
DBLP BibTeX RDF |
|
| 1 | Mikko Koivisto, Teemu Kivioja, Heikki Mannila, Pasi Rastas, Esko Ukkonen |
Hidden Markov Modelling Techniques for Haplotype Analysis.  |
ALT  |
2004 |
DBLP DOI BibTeX RDF |
|
| 1 | Foto N. Afrati, Aristides Gionis, Heikki Mannila |
Approximating a collection of frequent sets.  |
KDD  |
2004 |
DBLP DOI BibTeX RDF |
foundations of data mining, mining frequent itemsets |
| 1 | Jouni K. Seppänen, Heikki Mannila |
Dense itemsets.  |
KDD  |
2004 |
DBLP DOI BibTeX RDF |
frequent itemsets, error tolerance |
| 1 | Dmitry Pavlov, Heikki Mannila, Padhraic Smyth |
Beyond Independence: Probabilistic Models for Query Approximation on Binary Transaction Data.  |
IEEE Trans. Knowl. Data Eng.  |
2003 |
DBLP DOI BibTeX RDF |
Binary transaction data, query approximation, ADTree, probabilistic model, maximum entropy, itemsets |
| 1 | Dimitrios Gunopulos, Roni Khardon, Heikki Mannila, Sanjeev Saluja, Hannu Toivonen, Ram Sewak Sharm |
Discovering all most specific sentences.  |
ACM Trans. Database Syst.  |
2003 |
DBLP DOI BibTeX RDF |
learning with membership queries, maximal frequent sets, minimal keys, Data mining, association rules |
| 1 | Jouni K. Seppänen, Ella Bingham, Heikki Mannila |
A Simple Algorithm for Topic Identification in 0-1 Data.  |
PKDD  |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Antti Leino, Heikki Mannila, Ritva Liisa Pitkänen |
Rule Discovery and Probabilistic Modeling for Onomastic Data.  |
PKDD  |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Taneli Mielikäinen, Heikki Mannila |
The Pattern Ordering Problem.  |
PKDD  |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Mikko Koivisto, Markus Perola, T. Varilo, W. Hennah, J. Ekelund, Margus Lukk, L. Peltonen, Esko Ukkonen, Heikki Mannila |
An MDL Method for Finding Haplotype Blocks and for Estimating the Strength of Haplotype Block Boundaries.  |
Pacific Symposium on Biocomputing  |
2003 |
DBLP BibTeX RDF |
|
| 1 | Jaakko Hollmén, Jouni K. Seppänen, Heikki Mannila |
Mixture Models and Frequent Sets: Combining Global and Local Methods for 0-1 Data.  |
SDM  |
2003 |
DBLP BibTeX RDF |
|
| 1 | Aristides Gionis, Heikki Mannila |
Finding recurrent sources in sequences.  |
RECOMB  |
2003 |
DBLP DOI BibTeX RDF |
|
| 1 | Aristides Gionis, Teija Kujala, Heikki Mannila |
Fragments of order.  |
KDD  |
2003 |
DBLP DOI BibTeX RDF |
discovering hidden orderings, novel data mining algorithms, spectral analysis of data, consecutive ones property |
| 1 | Heikki Mannila, Anne Patrikainen, Jouni K. Seppänen, Juha Kere |
Long-range control of expression in yeast.  |
Bioinformatics  |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Jiawei Han, Russ B. Altman, Vipin Kumar, Heikki Mannila, Daryl Pregibon |
Emerging scientific applications in data mining.  |
Commun. ACM  |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Tapio Elomaa, Heikki Mannila, Hannu Toivonen (eds.) |
Principles of Data Mining and Knowledge Discovery, 6th European Conference, PKDD 2002, Helsinki, Finland, August 19-23, 2002, Proceedings  |
PKDD  |
2002 |
DBLP BibTeX RDF |
|
| 1 | Luc De Raedt, Manfred Jaeger, Sau Dan Lee, Heikki Mannila |
A Theory of Inductive Query Answering.  |
ICDM  |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Marko Salmenkivi, Juha Kere, Heikki Mannila |
Genome segmentation using piecewise constant intensity models and reversible jump MCMC.  |
ECCB  |
2002 |
DBLP BibTeX RDF |
|
| 1 | Heikki Mannila |
Local and Global Methods in Data Mining: Basic Techniques and Open Problems.  |
ICALP  |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Robert L. Grossman, Jiawei Han, Vipin Kumar, Heikki Mannila, Rajeev Motwani (eds.) |
Proceedings of the Second SIAM International Conference on Data Mining, Arlington, VA, USA, April 11-13, 2002  |
SDM  |
2002 |
DBLP BibTeX RDF |
|
| 1 | Carson Kai-Sang Leung, Raymond T. Ng, Heikki Mannila |
OSSM: A Segmentation Approach to Optimize Frequency Counting.  |
ICDE  |
2002 |
DBLP DOI BibTeX RDF |
support counting, Data mining, performance analysis, data structure, frequent patterns |
| 1 | Tapio Elomaa, Heikki Mannila, Hannu Toivonen (eds.) |
Machine Learning: ECML 2002, 13th European Conference on Machine Learning, Helsinki, Finland, August 19-23, 2002, Proceedings  |
ECML  |
2002 |
DBLP BibTeX RDF |
|
| 1 | Heikki Mannila |
Combining Pattern Discovery and Probabilistic Modeling in Data Mining.  |
SWAT  |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Ella Bingham, Heikki Mannila, Jouni K. Seppänen |
Topics in 0--1 data.  |
KDD  |
2002 |
DBLP DOI BibTeX RDF |
|
| 1 | Béla Bollobás, Gautam Das, Dimitrios Gunopulos, Heikki Mannila |
Time-Series Similarity Problems and Well-Separated Geometric Sets.  |
Nord. J. Comput.  |
2001 |
DBLP BibTeX RDF |
|
| 1 | Heikki Mannila |
Combining Discrete Algorithmic and Probabilistic Approaches in Data Mining.  |
PKDD  |
2001 |
DBLP DOI BibTeX RDF |
|
| 1 | Johan Himberg, Kalle Korpiaho, Heikki Mannila, Johanna Tikanmäki, Hannu Toivonen |
Time Series Segmentation for Context Recognition in Mobile Devices.  |
ICDM  |
2001 |
DBLP DOI BibTeX RDF |
|
| 1 | Heikki Mannila |
Combining Discrete Algorithmic and Probabilistic Approaches in Data Mining.  |
ECML  |
2001 |
DBLP DOI BibTeX RDF |
|
| 1 | Ella Bingham, Heikki Mannila |
Random projection in dimensionality reduction: applications to image and text data.  |
KDD  |
2001 |
DBLP DOI BibTeX RDF |
text document data, dimensionality reduction, high-dimensional data, random projection, image data |