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Data mining and neuroinformatics Finn Årup Nielsen Technical University of Denmark Department of Informatics and Mathematical Modelling Lyngby, Denmark

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Data mining and neuroinformatics. Finn Årup Nielsen Technical University of Denmark Department of Informatics and Mathematical Modelling Lyngby, Denmark. The Brede Tools. Brede Toolbox: Matlab neuroinformatics toolbox with, e.g., analysis of neuroimages - PowerPoint PPT Presentation

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Page 1: Data mining and neuroinformatics

Data mining and neuroinformatics

Finn Årup Nielsen

Technical University of DenmarkDepartment of Informatics and Mathematical ModellingLyngby, Denmark

Page 2: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

The Brede Tools

Brede Toolbox: Matlab neuroinformatics toolbox with, e.g., analysis of neuroimages

Brede Database: A database with result data from neuroimaging

Brede Wiki: A wiki for structured neuroscience data – paper, brain regions, ”topics”, researchers, organizations

Page 3: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Brede Toolbox

Matlab Toolbox for neuroinformatics

Data entry

Data mining

Page 4: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Brede Database

Available on the WebStereotaxic

coordinates converted to volumes

Bibliographic information, experiment description (scanner, paradigm), labels to ontologies

Page 5: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Brede Brain region ontology

Brain region ontology Example: Posterior

cingulate part of cingulateLinks: MeSH, BrainInfo, …

Page 6: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Brede Database topic ontology

Topics organized in a hierarchy

Examples: Memory, episodic memory, episodic memory retrieval, obsessive compulsive disorder, disgust, 5-HT2A receptor

Others: BrainMap taxonomy. MeSH. Under development: Cognitive Atlas (Poldrack), Cognitive Paradigm Ontology (Laird, Turner)

Page 7: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Data mining without labels

Non-negative matrix factorization (NMF) on volume from brain coordinates via kernel density estimation (KDE) and text from abstracts (”bag-of-words”)

Page 8: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Data mining: combine text and coordinates

Hiearchical clustering of ”cingulate” abstracts based on text, then comparison of the spatial distribution of brain coordinates with respect to the clusters.

Page 9: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Data mining with labels

Collect all experiments labeled with a specific ”topic” (here: pain)

Extract brain coordinates

Model the distribution with KDE to get volume

Perform for all ”topics” in the ontology

”ALE”: Bullmore, Laird, Salimi-Khorshidi, Turkeltaub, Wager, Zacks, …

Page 10: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Combining coordinates & experiment labels

Automated functional labeling of voxels: Conversion of coordinates and ontology labels to

matrices and perform NMF

Page 11: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Brede Wiki

Wiki with struc-tured data

Quick collaborative incremental addition of information

Page 12: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Brede Wiki search facility

Brain coordinates are automatically linked:

Coordinate search enginesOnline visualizationsBrain region page on the Brede

Wiki

Page 13: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Personality genetics wiki

87 papers

2815 associations

Page 14: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Personality genetics wiki: Meta-analysis

Top 10 polymorphims/traits correlations.

Page 15: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Personality genetics wiki: Forest plot

Forest plot for effect sizes for MAOA/reward dependence

Page 16: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

“Open Science”

Open Science = Open Data + Open Methods

Make structured data and results immediately available on the Internet for others to examine & download.

Make algorithms that analyze the data immediately available on the Internet.

Data entry a problem: Hope with NIDAG

Page 17: Data mining and neuroinformatics

Finn Årup Nielsen

IMM, Technical University of Denmark

Thanks!

Thanks to the Lundbeck Foundation for funding.

http://www.imm.dtu.dk/~fn/ – http://neuro.imm.dtu.dk/wiki/ – http://neuro.imm.dtu.dk/services/brededatabase/


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