Matti Karppa

25 papers A* 3A 3B 4Journal 11Unranked 3
YearRankTypeTitle / Venue / Authors
2026 J jnl
Engineering Compressed Matrix Multiplication with the Fast Walsh-Hadamard Transform.
CoRR
Joel Andersson, Matti Karppa
2026 J jnl
Huffman-Bucket Sketch: A Simple O(m) Algorithm for Cardinality Estimation.
CoRR
Matti Karppa
2022 A conf
DEANN: Speeding up Kernel-Density Estimation using Approximate Nearest Neighbor Search.
AISTATS
Matti Karppa, Martin Aumüller, Rasmus Pagh
2022 A* conf
HyperLogLogLog: Cardinality Estimation With One Log More.
KDD
Matti Karppa, Rasmus Pagh
2022 J jnl
HyperLogLogLog: Cardinality Estimation With One Log More.
CoRR
Matti Karppa, Rasmus Pagh
2021 J jnl
DEANN: Speeding up Kernel-Density Estimation using Approximate Nearest Neighbor Search.
CoRR
Matti Karppa, Martin Aumüller, Rasmus Pagh
2020 J jnl
An adaptive prefix-assignment technique for symmetry reduction.
J. Symb. Comput.
Tommi A. Junttila, Matti Karppa, Petteri Kaski, Jukka Kohonen
2020 J jnl
Explicit Correlation Amplifiers for Finding Outlier Correlations in Deterministic Subquadratic Time.
Algorithmica
Matti Karppa, Petteri Kaski, Jukka Kohonen, Padraig Ó Catháin
2020 — —
On Bilinear Techniques for Similarity Search and Boolean Matrix Multiplication.
Matti Karppa
2019 J jnl
Engineering Boolean Matrix Multiplication for Multiple-Accelerator Shared-Memory Architectures.
CoRR
Matti Karppa, Petteri Kaski
2019 A* conf
Probabilistic Tensors and Opportunistic Boolean Matrix Multiplication.
SODA
Matti Karppa, Petteri Kaski
2018 J jnl
A Faster Subquadratic Algorithm for Finding Outlier Correlations.
ACM Trans. Algorithms
Matti Karppa, Petteri Kaski, Jukka Kohonen
2017 A conf
An Adaptive Prefix-Assignment Technique for Symmetry Reduction.
SAT
Tommi A. Junttila, Matti Karppa, Petteri Kaski, Jukka Kohonen
2017 J jnl
An adaptive prefix-assignment technique for symmetry reduction.
CoRR
Tommi A. Junttila, Matti Karppa, Petteri Kaski, Jukka Kohonen
2016 A* conf
A Faster Subquadratic Algorithm for Finding Outlier Correlations.
SODA
Matti Karppa, Petteri Kaski, Jukka Kohonen
2016 A conf
Explicit Correlation Amplifiers for Finding Outlier Correlations in Deterministic Subquadratic Time.
ESA
Matti Karppa, Petteri Kaski, Jukka Kohonen, Padraig Ó Catháin
2016 J jnl
Explicit correlation amplifiers for finding outlier correlations in deterministic subquadratic time.
CoRR
Matti Karppa, Petteri Kaski, Jukka Kohonen, Padraig Ó Catháin
2015 J jnl
A faster subquadratic algorithm for finding outlier correlations.
CoRR
Matti Karppa, Petteri Kaski, Jukka Kohonen
2014 — conf
2D Appearance Based Techniques for Tracking the Signer Configuration in Sign Language Video Recordings.
ICIAR (2)
Ville Viitaniemi, Matti Karppa, Jorma Laaksonen
2014 B conf
Experiments on Recognising the Handshape in Blobs Extracted from Sign Language Videos.
ICPR
Ville Viitaniemi, Matti Karppa, Jorma Laaksonen
2014 B conf
S-pot - a benchmark in spotting signs within continuous signing.
LREC
Ville Viitaniemi, Tommi Jantunen, Leena Savolainen, Matti Karppa, Jorma Laaksonen
2014 B conf
SLMotion - An extensible sign language oriented video analysis tool.
LREC
Matti Karppa, Ville Viitaniemi, Marcos Luzardo, Jorma Laaksonen, Tommi Jantunen
2013 — conf
Detecting Hand-Head Occlusions in Sign Language Video.
SCIA
Ville Viitaniemi, Matti Karppa, Jorma Laaksonen, Tommi Jantunen
2013 — conf
Head Pose Estimation for Sign Language Video.
SCIA
Marcos Luzardo, Matti Karppa, Jorma Laaksonen, Tommi Jantunen
2012 B conf
Comparing computer vision analysis of signed language video with motion capture recordings.
LREC
Matti Karppa, Tommi Jantunen, Ville Viitaniemi, Jorma Laaksonen, Birgitta Burger, Danny De Weerdt