Open access – making the most of biomedical literature mining Lars Juhl Jensen EMBL Heidelberg.

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Presentation transcript:

Open access – making the most of biomedical literature mining Lars Juhl Jensen EMBL Heidelberg

why open access?

why biomedicine?

why literature mining?

M EDLINE

Mitotic cyclin (Clb2)-bound Cdc28 (Cdk1 homolog) directly phosphorylated Swe1 and this modification served as a priming step to promote subsequent Cdc5-dependent Swe1 hyperphosphorylation and degradation

information retrieval

finding the papers

if you can’t find them …

… they don’t exist!

ad hoc retrieval

users-specified query

“yeast AND cell cycle”

Mitotic cyclin (Clb2)-bound Cdc28 (Cdk1 homolog) directly phosphorylated Swe1 and this modification served as a priming step to promote subsequent Cdc5-dependent Swe1 hyperphosphorylation and degradation

M EDLINE

abstracts

complete papers

tricks

stemming

yeast / yeasts

synonyms

yeast / S. cerevisiae

dynamic query expansion

next logical step

ontologies

annotation

Cdc28  yeast gene

Cdc28  cell cycle

Mitotic cyclin (Clb2)-bound Cdc28 (Cdk1 homolog) directly phosphorylated Swe1 and this modification served as a priming step to promote subsequent Cdc5-dependent Swe1 hyperphosphorylation and degradation

“yeast AND cell cycle”

entity recognition

identifying the substance(s)

Mitotic cyclin (Clb2)-bound Cdc28 (Cdk1 homolog) directly phosphorylated Swe1 and this modification served as a priming step to promote subsequent Cdc5-dependent Swe1 hyperphosphorylation and degradation

if you can’t find them …

… they don’t exist!

abstracts

M EDLINE

tricks

good synonyms list

manual curation

orthographic variation

CDC28

Cdc28p

disambiguation

hairy

SDS

Cdc2

information extraction

formalizing the facts

co-mentioning

Mitotic cyclin (Clb2)-bound Cdc28 (Cdk1 homolog) directly phosphorylated Swe1 and this modification served as a priming step to promote subsequent Cdc5-dependent Swe1 hyperphosphorylation and degradation

NLP Natural Language Processing

Mitotic cyclin (Clb2)-bound Cdc28 (Cdk1 homolog) directly phosphorylated Swe1 and this modification served as a priming step to promote subsequent Cdc5-dependent Swe1 hyperphosphorylation and degradation

Gene and protein names Cue words for entity recognition Verbs for relation extraction [ nxexpr The expression of [ nxgene the cytochrome genes [ nxpg CYC1 and CYC7]]] is controlled by [ nxpg HAP1]

new discoveries

text mining

temporal trends

buzzwords

grant applications

global correlations

RegulatesRegulated P < 9  10 -9

transcriptional networks

PhosphorylatesPhosphorylated P < 2  10 -7

signal cascades

ExpressionPhosphorylation P < 5  10 -4

integration of text and data

network mining

linking genes to diseases

multifactorial diseases

genotype to phenotype

where are we now?

abstracts

complete papers

restricted access

open access

the tools are there

now we need the text!

Acknowledgments Jasmin Saric Rossitza Ouzounova Michael Kuhn Isabel Rojas Miguel Andrade Peer Bork