link_session_items(items: category|number, sessions: list[category]|list[number], {
    "param": value,
    ...
}) -> (targets: column, weights: column)

A link (or association) A->B is created between items A and B if the presence of A makes the presence of B in the same session N times more likely.

For further details about the algorithm see e.g. association rule learning.

link_session_items(items: category|number, sessions: list[category]|list[number], {
    "param": value,
    ...
}) -> (targets: column, weights: column)
​
min_support
[number, integer]
default:"10"

Minimum Support. Minimum support of a rule antecedent. If it is < 1 it will be taken as a proportion. In any other case it will be expected as a positive integer representing the count. Create link A->B only if A occurred in at least this many sessions.

​
min_confidence
number
default:"20"

Minimum Confidence. Expressed as a rule as a percentage. Include link A->B only if B occurred in at least this percentage of sessions also containing A.

Values must be in the following range:

0 ≤ min_confidence ≤ 100
​
min_lift
[number, null]

Minimum Lift. Expressed as multipler/ratio. Include link A->B only if A makes the presence of B in the same sessions at least this many times more likely.

​
weight_metric
string
default:"rule_lift_pct"

Metric for link weight.

Values must be one of the following:

itemset_support_abs itemset_support_pct filter_metric_abs filter_metric_pct antecedent_support_abs antecedent_support_pct consequent_support_abs consequent_support_pct rule_confidence_pct rule_lift_abs rule_lift_pct

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