`transaction_dataset_protocol`

Protocol for transaction datasets used with frequent itemset mining algorithms. Transaction identifiers are expected to be unique within a dataset.

| Availability: | logtalk_load(frequent_pattern_mining_protocols(loader))

| Author: Paulo Moura | Version: 1:0:0 | Date: 2026-04-29

| Compilation flags: | static

| Dependencies: | (none)

| Remarks: | (none)

| Inherited public predicates: | (none)

.. contents:: :local: :backlinks: top

Public predicates

.. index:: items/1 .. _transaction_dataset_protocol/0::items/1:

items/1 ^^^^^^^^^^^

Returns the declared transaction item domain as a canonical sorted list of unique items.

| Compilation flags: | static

| Template: | items(Items) | Mode and number of proofs: | items(-list(atom)) - one

.. index:: transaction/2 .. _transaction_dataset_protocol/0::transaction/2:

transaction/2 ^^^^^^^^^^^^^^^^^

Enumerates by backtracking the transactions in the dataset. The transaction identifier is expected to be unique within the dataset. Each transaction is represented as a canonical sorted list of unique declared items.

| Compilation flags: | static

| Template: | transaction(Id,Transaction) | Mode and number of proofs: | transaction(-integer,-list(atom)) - zero_or_more

Protected predicates

(none)

Private predicates

(none)

Operators

(none)