make_edge_weights {rsemmed} | R Documentation

## Create edge weights

### Description

Create edge weights to modify the shortest path search (`find_paths`). Discourage and/or encourage certain types of paths by supplying `_out` and `_in` arguments, respectively. Node semantic types, node names, and edge predicates are the features that can influence the edge weights. Capitalization is ignored.

### Usage

    make_edge_weights(
        graph,
        e_feat,
        node_semtypes_out = NULL,
        node_names_out = NULL,
        edge_preds_out = NULL,
        node_semtypes_in = NULL,
        node_names_in = NULL,
        edge_preds_in = NULL
    )

### Arguments

`graph` | The SemMed graph
`e_feat` | A `data.frame` of edge features from `get_edge_features`.
`node_semtypes_out` | A character vector of semantic types to exclude from shortest paths.
`node_names_out` | A character vector of exact node names to exclude.
`edge_preds_out` | A character vector of edge predicates to exclude.
`node_semtypes_in` | A character vector of semantic types to include/encourage in shortest paths.
`node_names_in` | A character vector of exact node names to include.
`edge_preds_in` | A character vector of edge predicates to include.

### Value

A numeric vector of weights

### See Also

`find_paths`, `get_middle_nodes` for a way to obtain node names to remove

### Examples

    data(g_mini)

    node_cortisol <- find_nodes(g_mini, names = "Serum cortisol")
    node_stress <- find_nodes(g_mini, names = "Chronic Stress")
    paths <- find_paths(g_mini, from = node_cortisol, to = node_stress)

    e_feat <- get_edge_features(g_mini)

    w1 <- make_edge_weights(g_mini, e_feat, edge_preds_in = "COEXISTS_WITH")
    paths1 <- find_paths(g_mini,
        from = node_cortisol, to = node_stress, weights = w1)

    w2 <- make_edge_weights(g_mini, e_feat, edge_preds_in = "ISA",
                            node_names_out = "Stress")
    paths2 <- find_paths(g_mini,
        from = node_cortisol, to = node_stress, weights = w2)

[Package rsemmed version 1.4.0 Index]