expression_semantic_scoring {GAPGOM} | R Documentation

## GAPGOM - expression_prediction()

### Description

Predicts annotation of un-annotated genes based on existing Gene Ontology annotation data and correlated expression patterns.

### Usage

    expression_semantic_scoring(gene_id, expression_set, method = "combine")

### Arguments

`gene_id` | gene rowname to be compared to the other GO terms.
`expression_set` | ExpressionSet class containing expression values and other useful information, see GAPGOM::f5_example_data documentation for further explanation of this type. If you want a custom ExpressionSet you have to define one yourself.
`method` | which statistical method to use for the prediction, currently there are 5 available; "pearson", "spearman", "kendall", "fisher", "sobolev" and "combine".

### Details

This function is specifically made for predicting lncRNA annotation by assuming "guilt by association". For instance, the expression data in this package is actually based on mRNA expression data, but correlated with lncRNA. This expression data is the used in combination with mRNA GO annotation to calculate similarity scores between GO terms,

### Value

The resulting dataframe with prediction of similar GO terms. These are ordered with respect to FDR values. The following columns will be in the dataframe; GOID - Gene Ontology ID, Ontology - Ontology type (MF or BP), FDR - False Positive Rate, Term - description of GOID, used_method - the used method to determine the ontology term similarity

### Examples

    # Example with default dataset, take a look at the data documentation
    # to fully grasp what's going on with making of the filter etc. (Biobase
    # ExpressionSet)

    # set an artbitrary gene you want to find similarities for. (5th row in this
    # case)
    gid <- "ENSG00000228630"
    result <- GAPGOM::expression_semantic_scoring(gid,
                                                  GAPGOM::expset)

[Package GAPGOM version 1.8.0 Index]