category

frequent_pattern_mining_common

Shared predicates for frequent itemset miner dataset validation, support accumulation, and itemset ordering/filtering helpers.

Availability:
logtalk_load(frequent_pattern_mining_protocols(loader))
Author: Paulo Moura
Version: 1:0:0
Date: 2026-04-29
Compilation flags:
static
Extends:
public pattern_miner_common
Uses:
list
type
Remarks:
(none)
Inherited public predicates:
 check_option/1  check_options/1  check_pattern_miner/1  default_option/1  default_options/1  diagnostic/2  diagnostics/2  export_to_clauses/4  export_to_file/4  mine/2  mine/3  option/2  option/3  pattern_miner_options/2  print_pattern_miner/1  valid_option/1  valid_options/1  valid_pattern_miner/1

Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

check_transactions/4

Validates the collected dataset transactions and returns the maximum transaction length.

Compilation flags:
static
Template:
check_transactions(Dataset,ItemDomain,Transactions,MaxTransactionLength)
Mode and number of proofs:
check_transactions(+object_identifier,+list(atom),+list(pair(integer,list(atom))),-integer) - one

sort_patterns/2

Sorts itemset patterns first by pattern length and then lexicographically.

Compilation flags:
static
Template:
sort_patterns(Patterns0,Patterns)
Mode and number of proofs:
sort_patterns(+list(compound),-list(compound)) - one

filter_patterns/3

Filters itemset patterns by minimum pattern length.

Compilation flags:
static
Template:
filter_patterns(Patterns0,MinimumPatternLength,Patterns)
Mode and number of proofs:
filter_patterns(+list(compound),+integer,-list(compound)) - one

count_items/4

Accumulates support counts for a list of items.

Compilation flags:
static
Template:
count_items(Items,Count,ItemCounts0,ItemCounts)
Mode and number of proofs:
count_items(+list(atom),+integer,+list(pair(atom,integer)),-list(pair(atom,integer))) - one

select_frequent_item_supports/3

Selects the item supports that satisfy the minimum support count.

Compilation flags:
static
Template:
select_frequent_item_supports(ItemCounts,SupportCount,FrequentItemSupports)
Mode and number of proofs:
select_frequent_item_supports(+list(pair(atom,integer)),+integer,-list(compound)) - one

valid_itemset_patterns/2

True when the patterns are valid itemset(Items, Support) terms over the given item domain with positive integer supports.

Compilation flags:
static
Template:
valid_itemset_patterns(ItemDomain,Patterns)
Mode and number of proofs:
valid_itemset_patterns(+list(atom),+list(compound)) - zero_or_one

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)