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1.
SegMine workflows for semantic microarray data analysis in Orange4WS
Vid Podpečan, Nada Lavrač, Igor Mozetič, Petra Kralj Novak, Igor Trajkovski, Laura Langohr, Kimmo Kulovesi, Hannu Toivonen, Marko Petek, Helena Motaln, Kristina Gruden, 2011, izvirni znanstveni članek

Povzetek: Background In experimental data analysis, bioinformatics researchers increasingly rely on tools that enable the composition and reuse of scientific workflows. The utility of current bioinformatics workflow environments can be significantly increased by offering advanced data mining services as workflow components. Such services can support, for instance, knowledge discovery from diverse distributed data and knowledge sources (such as GO, KEGG, PubMed, and experimental databases). Specifically, cutting-edge data analysis approaches, such as semantic data mining, link discovery, and visualization, have not yet been made available to researchers investigating complex biological datasets. Results We present a new methodology, SegMine, for semantic analysis of microarray data by exploiting general biological knowledge, and a new workflow environment, Orange4WS, with integrated support for web services in which the SegMine methodology is implemented. The SegMine methodology consists of two main steps. First, the semantic subgroup discovery algorithm is used to construct elaborate rules that identify enriched gene sets. Then, a link discovery service is used for the creation and visualization of new biological hypotheses. The utility of SegMine, implemented as a set of workflows in Orange4WS, is demonstrated in two microarray data analysis applications. In the analysis of senescence in human stem cells, the use of SegMine resulted in three novel research hypotheses that could improve understanding of the underlying mechanisms of senescence and identification of candidate marker genes. Conclusions Compared to the available data analysis systems, SegMine offers improved hypothesis generation and data interpretation for bioinformatics in an easy-to-use integrated workflow environment.
Objavljeno v DiRROS: 05.08.2024; Ogledov: 291; Prenosov: 195
.pdf Celotno besedilo (3,09 MB)
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2.
GoMapMan : integration, consolidation and visualization of plant gene annotations within the MapMan ontology
Živa Ramšak, Špela Baebler, Ana Rotter, Matej Korbar, Igor Mozetič, Björn Usadel, Kristina Gruden, 2014, izvirni znanstveni članek

Povzetek: GoMapMan (http://www.gomapman.org) is an open web-accessible resource for gene functional annotations in the plant sciences. It was developed to facilitate improvement, consolidation and visualization of gene annotations across several plant species. GoMapMan is based on the MapMan ontology, organized in the form of a hierarchical tree of biological concepts, which describe gene functions. Currently, genes of the model species Arabidopsis and three crop species (potato, tomato and rice) are included. The main features of GoMapMan are (i) dynamic and interactive gene product annotation through various curation options; (ii) consolidation of gene annotations for different plant species through the integration of orthologue group information; (iii) traceability of gene ontology changes and annotations; (iv) integration of external knowledge about genes from different public resources; and (v) providing gathered information to high throughput analysis tools via dynamically generated export files. All of the GoMapMan functionalities are openly available, with the restriction on the curation functions, which require prior registration to ensure traceability of the implemented changes.
Ključne besede: genes, plants
Objavljeno v DiRROS: 02.08.2024; Ogledov: 272; Prenosov: 179
.pdf Celotno besedilo (4,88 MB)
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3.
Toward a better understanding of emotional dynamics on facebook
Fabiana Zollo, Borut Sluban, Igor Mozetič, Walter Quattrociocchi, 2018, objavljeni znanstveni prispevek na konferenci

Objavljeno v DiRROS: 18.04.2018; Ogledov: 3202; Prenosov: 1438
.pdf Celotno besedilo (238,00 KB)

4.
Exploring the twitterland of the impact investing market
Petra Kralj Novak, Luisa De Amicis, Catherine Hughes, Igor Mozetič, 2018, objavljeni znanstveni prispevek na konferenci

Objavljeno v DiRROS: 18.04.2018; Ogledov: 3287; Prenosov: 1296
.pdf Celotno besedilo (351,58 KB)

5.
Mapping organizations' goals and leanings in the lobbyist network in banking and finance
Borut Sluban, Jasmina Smailović, Petra Kralj Novak, Igor Mozetič, Stefano Battiston, 2018, objavljeni znanstveni prispevek na konferenci

Objavljeno v DiRROS: 18.04.2018; Ogledov: 3043; Prenosov: 1374
.pdf Celotno besedilo (413,14 KB)

6.
How to evaluate sentiment classifiers for Twitter time-ordered data?
Igor Mozetič, Luís Torgo, Vitor Cerqueira, Jasmina Smailović, 2018, izvirni znanstveni članek

Objavljeno v DiRROS: 19.03.2018; Ogledov: 2893; Prenosov: 1145
.pdf Celotno besedilo (3,27 MB)

7.
A comparative study of performance estimation methods for time series forecasting
Vitor Cerqueira, Luís Torgo, Jasmina Smailović, Igor Mozetič, 2017, objavljeni znanstveni prispevek na konferenci

Objavljeno v DiRROS: 10.11.2017; Ogledov: 4014; Prenosov: 1595
.pdf Celotno besedilo (175,68 KB)

8.
Stance and influence of Twitter users regarding the Brexit referendum
Miha Grčar, Darko Čerepnalkoski, Igor Mozetič, Petra Kralj Novak, 2017, izvirni znanstveni članek

Objavljeno v DiRROS: 07.08.2017; Ogledov: 3797; Prenosov: 1128
.pdf Celotno besedilo (1,69 MB)

9.
Twitter sentiment around the earnings announcement events
Peter Gabrovšek, Darko Aleksovski, Igor Mozetič, Miha Grčar, 2017, izvirni znanstveni članek

Objavljeno v DiRROS: 07.06.2017; Ogledov: 3805; Prenosov: 1141
.pdf Celotno besedilo (3,47 MB)

10.
The Hirsch index for Twitter : influential proponents and opponents of Brexit
Miha Grčar, Darko Čerepnalkoski, Igor Mozetič, 2016, objavljeni povzetek znanstvenega prispevka na konferenci

Objavljeno v DiRROS: 23.11.2016; Ogledov: 4902; Prenosov: 1000
.pdf Celotno besedilo (1011,95 KB)

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