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02-recap.Rmd

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### What Are the Input Data?
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Functional enrichment analysis relies on carefully prepared input data derived from an -omics study. The data inputs typically consist of the following components depending on the type of the enrichment analysis:
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Functional enrichment analysis relies on carefully prepared input data derived from an -omics study. The data inputs typically consist of various components depending on the type of the enrichment analysis. These are list of features, ranked list, background set, gene sets and pathway topology.
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### Synonyms
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It's important to note that the term "functional enrichment analysis" is often used in different ways across the field. The diversity in terminology can sometimes cause confusion, as the same concept is referred to by various synonymous terms. These include:
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<span style="color: orange;"><em>Limitations</em></span>: Requires more detailed pathway annotations and higher computational complexity. Pathway databases may not have complete or accurate topological information for all pathways, limiting the analysis for certain datasets.
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PT-based enrichment will be covered in this workshop:
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Given the focus of this workshop on more widely used and accessible enrichment methods, PT-based analysis will not be covered for its limited practical applications (primarily due to the insufficient availability of comprehensive and well-annotated pathway topology databases). Instead, we will focus on methods like ORA and GSEA, which are better supported by existing databases and easier to apply in typical omics studies. However, participants are encouraged to explore PT-based enrichment in the future as database resources improve.
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## Annotation Databses
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Functional annotation databases are curated collections of biological data that systematically categorise and describe the functions, roles, interactions, and pathways of genes, proteins, or other biological molecules, enabling researchers to link experimental data to biological knowledge.
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05-genelists.Rmd

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- For this workshop, get the genes with a FDR <1x10^-4 and 2x fold change. Note that this is a ridiculous threshold - most experiments yeild far less differential expression, but the difference between these two cell conditions is pretty extreme! Typically you would only filter at p<0.01 (and occasionally 2-fold change) - you might see 10s to 100s of results. However, this arbitrary threshold gives a more typical number of differentially expressed genes for downstream analysis. An alternative approach could be to take the top 500 genes.
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{{%expand Show%}} There are 4923 differentially expressed genes, 2149 of which have a 2-fold change in expression. With the aggressive filtering - there are 198 genes left {{%/expand%}}
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<details>
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<summary>Show</summary>
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There are 4923 differentially expressed genes, 2149 of which have a 2-fold change in expression. With the aggressive filtering, there are 198 genes left.
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</details>
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3. How many genes are _tested_? This is your background.
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{{%expand Show%}} 14420 genes tested. {{%/expand%}}
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<details>
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<summary>Show</summary>
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14420 genes tested.
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</details>
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<!--But with ~20k human genes - why are there genes missing? **14420** -->
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06-web-tools.Rmd

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# Online tools
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_bookdown.yml

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chapter_name: "Chapter "
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rmd_files:
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- index.Rmd
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- part-day1.Rmd
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- 01-overview.Rmd
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- 02-recap.Rmd
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- 03-stats.Rmd
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- 04-example-dataset.Rmd
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- 05-genelists.Rmd
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- 06-reporting.Rmd
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- 07-resources.Rmd
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- 08-challenge.Rmd
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- 09-end.Rmd
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- 06-web-tools.Rmd
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- 07-reporting.Rmd
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- 08-resources.Rmd
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- part-day2.Rmd
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- 09-challenge.Rmd
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- 10-end.Rmd
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copy_resources:
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- files/

_output.yml

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bookdown::bs4_book:
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css: style.css
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# before_body: custom.js
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theme:
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primary: "#1D0F81"
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repo: https://github.com/MonashBioinformaticsPlatform/Functional_Enrichment_BioCommons_2024
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repo: https://github.com/MonashBioinformaticsPlatfor/Functional_Enrichment_BioCommons_2024
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# toc_depth: 2 # Adjust the depth as needed (e.g., 2 for up to H2 headers)
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bookdown::pdf_book:
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includes:
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in_header: preamble.tex

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