%% subgoal_decomposition_engine.erl %% Advanced subgoal setting and decomposition with recursive planning %% Sophisticated gen_statem for goal-oriented task breakdown -module(subgoal_decomposition_engine). -behaviour(gen_statem). -export([ start_link/1, set_primary_goal/2, decompose_goal/2, create_subgoal/3, link_subgoals/3, validate_goal_hierarchy/1, optimize_goal_sequence/1, track_goal_progress/1, adapt_goals/2, merge_goal_branches/2, goal_conflict_resolution/2 ]). -export([init/1, callback_mode/0, terminate/3]). -export([ idle/3, goal_analysis/3, decomposition/3, subgoal_creation/3, dependency_mapping/3, optimization/3, validation/3, execution_planning/3, monitoring/3, adaptation/3 ]). -record(goal_data, { session_id, primary_goal, goal_hierarchy = #{}, subgoal_network = #{}, dependency_graph = #{}, execution_sequence = [], progress_tracking = #{}, optimization_history = [], adaptation_rules = #{}, conflict_resolution_stack = [], cognitive_model = #{}, meta_reasoning_depth = 0, goal_satisfaction_criteria = #{} }). -record(goal_node, { goal_id, parent_goal_id, goal_description, goal_type, % primary, intermediate, leaf, meta decomposition_strategy, % sequential, parallel, conditional, iterative subgoal_ids = [], prerequisite_goals = [], success_criteria = #{}, failure_conditions = #{}, resource_requirements = #{}, estimated_effort = medium, priority_level = normal, temporal_constraints = #{}, contextual_dependencies = [], optimization_metadata = #{}, progress_state = not_started, % not_started, in_progress, completed, failed, suspended completion_percentage = 0.0, learning_annotations = [] }). -record(goal_relationship, { relationship_id, source_goal_id, target_goal_id, relationship_type, % prerequisite, enables, conflicts, supports, alternative strength = 1.0, temporal_ordering = undefined, conditional_logic = undefined, constraint_parameters = #{}, dynamic_weight = 1.0 }). -record(decomposition_strategy, { strategy_id, strategy_type, % hierarchical, temporal, resource_based, risk_minimizing decomposition_rules = [], optimization_criteria = [], adaptation_triggers = [], meta_cognitive_parameters = #{}, learning_integration = enabled }). %% Public API start_link(SessionConfig) -> gen_statem:start_link(?MODULE, SessionConfig, []). set_primary_goal(EnginePid, GoalSpec) -> gen_statem:call(EnginePid, {set_primary_goal, GoalSpec}). decompose_goal(EnginePid, GoalId) -> gen_statem:call(EnginePid, {decompose_goal, GoalId}). create_subgoal(EnginePid, ParentGoalId, SubgoalSpec) -> gen_statem:call(EnginePid, {create_subgoal, ParentGoalId, SubgoalSpec}). link_subgoals(EnginePid, SourceGoalId, TargetGoalId) -> gen_statem:call(EnginePid, {link_subgoals, SourceGoalId, TargetGoalId}). validate_goal_hierarchy(EnginePid) -> gen_statem:call(EnginePid, validate_hierarchy). optimize_goal_sequence(EnginePid) -> gen_statem:call(EnginePid, optimize_sequence). track_goal_progress(EnginePid) -> gen_statem:call(EnginePid, track_progress). adapt_goals(EnginePid, AdaptationTrigger) -> gen_statem:call(EnginePid, {adapt_goals, AdaptationTrigger}). merge_goal_branches(EnginePid, BranchIds) -> gen_statem:call(EnginePid, {merge_branches, BranchIds}). goal_conflict_resolution(EnginePid, ConflictData) -> gen_statem:call(EnginePid, {resolve_conflicts, ConflictData}). %% Gen_statem callbacks init(SessionConfig) -> SessionId = generate_session_id(), Data = #goal_data{ session_id = SessionId, adaptation_rules = maps:get(adaptation_rules, SessionConfig, #{}), cognitive_model = initialize_cognitive_model(), meta_reasoning_depth = maps:get(meta_reasoning_depth, SessionConfig, 3), goal_satisfaction_criteria = maps:get(satisfaction_criteria, SessionConfig, #{}) }, {ok, idle, Data}. callback_mode() -> state_functions. %% State: idle - Waiting for primary goal setting idle({call, From}, {set_primary_goal, GoalSpec}, Data) -> % Set primary goal and initialize hierarchy PrimaryGoalId = generate_goal_id(), PrimaryGoal = create_goal_node(PrimaryGoalId, undefined, GoalSpec, primary), NewData = Data#goal_data{ primary_goal = PrimaryGoal, goal_hierarchy = #{PrimaryGoalId => PrimaryGoal}, progress_tracking = #{PrimaryGoalId => initialize_progress_tracking()} }, {next_state, goal_analysis, NewData, [{reply, From, {ok, PrimaryGoalId}}]}; idle({call, From}, _Request, _Data) -> {keep_state_and_data, [{reply, From, {error, no_primary_goal}}]}; idle(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, idle). %% State: goal_analysis - Analyzing primary goal complexity and requirements goal_analysis(enter, _OldState, Data) -> % Analyze primary goal for decomposition strategy PrimaryGoal = Data#goal_data.primary_goal, spawn(fun() -> Analysis = analyze_goal_complexity(PrimaryGoal, Data), gen_statem:cast(self(), {analysis_complete, Analysis}) end), {keep_state_and_data, [{state_timeout, 7000, analysis_timeout}]}; goal_analysis(cast, {analysis_complete, Analysis}, Data) -> % Goal analysis complete, determine decomposition approach case maps:get(requires_decomposition, Analysis, false) of true -> % Goal requires decomposition AnalyzedData = store_goal_analysis(Analysis, Data), {next_state, decomposition, AnalyzedData}; false -> % Goal is atomic, proceed to execution planning AtomicData = mark_goal_as_atomic(Analysis, Data), {next_state, execution_planning, AtomicData} end; goal_analysis(state_timeout, analysis_timeout, Data) -> % Analysis timeout, assume decomposition needed {next_state, decomposition, Data}; goal_analysis(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, goal_analysis). %% State: decomposition - Breaking down goals into subgoals decomposition(enter, _OldState, Data) -> % Start goal decomposition process PrimaryGoal = Data#goal_data.primary_goal, spawn(fun() -> DecompositionResult = perform_goal_decomposition(PrimaryGoal, Data), gen_statem:cast(self(), {decomposition_complete, DecompositionResult}) end), {keep_state_and_data, [{state_timeout, 12000, decomposition_timeout}]}; decomposition(cast, {decomposition_complete, DecompositionResult}, Data) -> case DecompositionResult of {success, SubgoalHierarchy, RelationshipGraph} -> % Decomposition successful NewData = Data#goal_data{ goal_hierarchy = merge_goal_hierarchies(SubgoalHierarchy, Data#goal_data.goal_hierarchy), subgoal_network = RelationshipGraph }, {next_state, subgoal_creation, NewData}; {partial, PartialHierarchy, UnresolvedGoals} -> % Partial decomposition, handle unresolved goals PartialData = handle_partial_decomposition(PartialHierarchy, UnresolvedGoals, Data), {next_state, subgoal_creation, PartialData}; {failure, DecompositionError} -> % Decomposition failed, try alternative strategy case try_alternative_decomposition_strategy(DecompositionError, Data) of {alternative, AlternativeData} -> {repeat_state, AlternativeData}; {no_alternative, ErrorData} -> {next_state, execution_planning, ErrorData} end end; decomposition({call, From}, {decompose_goal, GoalId}, Data) -> % Manual decomposition request for specific goal case maps:get(GoalId, Data#goal_data.goal_hierarchy, undefined) of undefined -> {keep_state_and_data, [{reply, From, {error, goal_not_found}}]}; GoalNode -> spawn(fun() -> ManualDecompResult = decompose_specific_goal(GoalNode, Data), gen_statem:cast(self(), {manual_decomposition_complete, GoalId, ManualDecompResult}) end), {keep_state_and_data, [{reply, From, {ok, decomposition_started}}]} end; decomposition(cast, {manual_decomposition_complete, GoalId, Result}, Data) -> % Manual decomposition completed UpdatedData = integrate_manual_decomposition(GoalId, Result, Data), {keep_state, UpdatedData}; decomposition(state_timeout, decomposition_timeout, Data) -> % Decomposition timeout, proceed with current hierarchy {next_state, subgoal_creation, Data}; decomposition(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, decomposition). %% State: subgoal_creation - Creating and refining subgoals subgoal_creation(enter, _OldState, Data) -> % Refine and create additional subgoals as needed refine_subgoal_hierarchy(Data), {keep_state_and_data, []}; subgoal_creation({call, From}, {create_subgoal, ParentGoalId, SubgoalSpec}, Data) -> % Create new subgoal under specified parent case create_new_subgoal(ParentGoalId, SubgoalSpec, Data) of {ok, SubgoalId, UpdatedData} -> {keep_state, UpdatedData, [{reply, From, {ok, SubgoalId}}]}; {error, CreationError} -> {keep_state_and_data, [{reply, From, {error, CreationError}}]} end; subgoal_creation(cast, {subgoal_created, SubgoalId, SubgoalNode}, Data) -> % New subgoal created, integrate into hierarchy IntegratedData = integrate_new_subgoal(SubgoalId, SubgoalNode, Data), {keep_state, IntegratedData}; subgoal_creation(cast, subgoal_creation_complete, Data) -> % Subgoal creation phase complete {next_state, dependency_mapping, Data}; subgoal_creation(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, subgoal_creation). %% State: dependency_mapping - Mapping dependencies between subgoals dependency_mapping(enter, _OldState, Data) -> % Create comprehensive dependency mapping spawn(fun() -> DependencyGraph = create_dependency_graph(Data), gen_statem:cast(self(), {dependency_mapping_complete, DependencyGraph}) end), {keep_state_and_data, [{state_timeout, 8000, dependency_timeout}]}; dependency_mapping(cast, {dependency_mapping_complete, DependencyGraph}, Data) -> % Dependency mapping complete, validate consistency case validate_dependency_consistency(DependencyGraph, Data) of {valid, ValidatedGraph} -> DependentData = Data#goal_data{dependency_graph = ValidatedGraph}, {next_state, optimization, DependentData}; {inconsistent, Inconsistencies} -> % Resolve dependency inconsistencies ResolvedData = resolve_dependency_inconsistencies(Inconsistencies, Data), {repeat_state, ResolvedData}; {circular_dependencies, CircularDeps} -> % Handle circular dependencies CircularResolvedData = resolve_circular_dependencies(CircularDeps, Data), {repeat_state, CircularResolvedData} end; dependency_mapping({call, From}, {link_subgoals, SourceId, TargetId}, Data) -> % Create dependency link between subgoals case create_subgoal_dependency_link(SourceId, TargetId, Data) of {ok, LinkId, LinkedData} -> {keep_state, LinkedData, [{reply, From, {ok, LinkId}}]}; {error, LinkError} -> {keep_state_and_data, [{reply, From, {error, LinkError}}]} end; dependency_mapping(state_timeout, dependency_timeout, Data) -> % Timeout, proceed with current dependency mapping {next_state, optimization, Data}; dependency_mapping(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, dependency_mapping). %% State: optimization - Optimizing goal sequence and resource allocation optimization(enter, _OldState, Data) -> % Optimize goal execution sequence spawn(fun() -> OptimizationResult = optimize_goal_execution_sequence(Data), gen_statem:cast(self(), {optimization_complete, OptimizationResult}) end), {keep_state_and_data, [{state_timeout, 10000, optimization_timeout}]}; optimization(cast, {optimization_complete, OptimizationResult}, Data) -> case OptimizationResult of {optimized, OptimizedSequence, PerformanceGains} -> % Optimization successful OptimizedData = Data#goal_data{ execution_sequence = OptimizedSequence, optimization_history = [PerformanceGains | Data#goal_data.optimization_history] }, {next_state, validation, OptimizedData}; {no_improvement, CurrentSequence} -> % No improvement found, keep current sequence UnchangedData = Data#goal_data{execution_sequence = CurrentSequence}, {next_state, validation, UnchangedData}; {optimization_error, Error} -> % Optimization failed, proceed without optimization ErrorData = record_optimization_error(Error, Data), {next_state, validation, ErrorData} end; optimization({call, From}, optimize_sequence, Data) -> % Manual optimization request spawn(fun() -> ManualOptResult = perform_manual_optimization(Data), gen_statem:cast(self(), {manual_optimization_complete, ManualOptResult}) end), {keep_state_and_data, [{reply, From, {ok, optimization_started}}]}; optimization(cast, {manual_optimization_complete, Result}, Data) -> % Manual optimization completed ManualOptData = apply_manual_optimization_result(Result, Data), {keep_state, ManualOptData}; optimization(state_timeout, optimization_timeout, Data) -> % Optimization timeout, proceed with current state {next_state, validation, Data}; optimization(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, optimization). %% State: validation - Validating goal hierarchy consistency and feasibility validation(enter, _OldState, Data) -> % Comprehensive validation of goal hierarchy spawn(fun() -> ValidationResult = validate_complete_goal_hierarchy(Data), gen_statem:cast(self(), {validation_complete, ValidationResult}) end), {keep_state_and_data, [{state_timeout, 6000, validation_timeout}]}; validation(cast, {validation_complete, ValidationResult}, Data) -> case ValidationResult of {valid, ValidationReport} -> % Validation successful, proceed to execution planning ValidatedData = store_validation_report(ValidationReport, Data), {next_state, execution_planning, ValidatedData}; {invalid, ValidationErrors} -> % Validation failed, fix errors case fix_validation_errors(ValidationErrors, Data) of {fixed, FixedData} -> {repeat_state, FixedData}; {unfixable, UnfixableData} -> {next_state, execution_planning, UnfixableData} end; {needs_restructuring, RestructuringNeeds} -> % Hierarchy needs restructuring RestructuredData = restructure_goal_hierarchy(RestructuringNeeds, Data), {next_state, decomposition, RestructuredData} end; validation({call, From}, validate_hierarchy, Data) -> % Manual validation request ValidationStatus = perform_immediate_validation(Data), {keep_state_and_data, [{reply, From, {ok, ValidationStatus}}]}; validation(state_timeout, validation_timeout, Data) -> % Validation timeout, proceed anyway {next_state, execution_planning, Data}; validation(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, validation). %% State: execution_planning - Creating execution plan for goal hierarchy execution_planning(enter, _OldState, Data) -> % Create comprehensive execution plan ExecutionPlan = create_goal_execution_plan(Data), PlannedData = Data#goal_data{execution_sequence = ExecutionPlan}, {next_state, monitoring, PlannedData}; execution_planning(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, execution_planning). %% State: monitoring - Monitoring goal progress and adaptation monitoring(enter, _OldState, Data) -> % Start monitoring goal progress start_goal_progress_monitoring(Data), {keep_state_and_data, []}; monitoring({call, From}, track_progress, Data) -> % Provide progress tracking information ProgressReport = generate_progress_report(Data), {keep_state_and_data, [{reply, From, {ok, ProgressReport}}]}; monitoring({call, From}, {adapt_goals, AdaptationTrigger}, Data) -> % Adaptation requested case should_adapt_goals(AdaptationTrigger, Data) of {yes, AdaptationStrategy} -> AdaptationData = prepare_goal_adaptation(AdaptationStrategy, Data), {next_state, adaptation, AdaptationData, [{reply, From, {ok, adaptation_started}}]}; {no, Reason} -> {keep_state_and_data, [{reply, From, {ok, {adaptation_skipped, Reason}}}]} end; monitoring(cast, {goal_progress_update, GoalId, Progress}, Data) -> % Update goal progress UpdatedData = update_goal_progress(GoalId, Progress, Data), {keep_state, UpdatedData}; monitoring(cast, {goal_completed, GoalId}, Data) -> % Goal completed, update hierarchy CompletedData = mark_goal_completed(GoalId, Data), case check_overall_completion(CompletedData) of {completed, FinalResults} -> {stop, {completed, FinalResults}, CompletedData}; {in_progress, ContinuationData} -> {keep_state, ContinuationData} end; monitoring(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, monitoring). %% State: adaptation - Adapting goals based on changing circumstances adaptation(enter, _OldState, Data) -> % Execute goal adaptation strategy execute_goal_adaptation(Data), {keep_state_and_data, [{state_timeout, 8000, adaptation_timeout}]}; adaptation(cast, {adaptation_complete, AdaptationResult}, Data) -> case AdaptationResult of {adapted, AdaptedHierarchy} -> % Adaptation successful AdaptedData = apply_goal_adaptation(AdaptedHierarchy, Data), {next_state, validation, AdaptedData}; {no_adaptation_needed, CurrentHierarchy} -> % No adaptation needed {next_state, monitoring, Data}; {adaptation_failed, FailureReason} -> % Adaptation failed, continue with current hierarchy FailureData = record_adaptation_failure(FailureReason, Data), {next_state, monitoring, FailureData} end; adaptation({call, From}, {merge_branches, BranchIds}, Data) -> % Merge goal branches during adaptation case merge_goal_branches_internal(BranchIds, Data) of {ok, MergedData} -> {keep_state, MergedData, [{reply, From, {ok, branches_merged}}]}; {error, MergeError} -> {keep_state_and_data, [{reply, From, {error, MergeError}}]} end; adaptation({call, From}, {resolve_conflicts, ConflictData}, Data) -> % Resolve goal conflicts during adaptation case resolve_goal_conflicts(ConflictData, Data) of {resolved, ResolvedData} -> {keep_state, ResolvedData, [{reply, From, {ok, conflicts_resolved}}]}; {unresolved, UnresolvedConflicts} -> {keep_state_and_data, [{reply, From, {error, {unresolved_conflicts, UnresolvedConflicts}}}]} end; adaptation(state_timeout, adaptation_timeout, Data) -> % Adaptation timeout, return to monitoring {next_state, monitoring, Data}; adaptation(EventType, Event, Data) -> handle_common_events(EventType, Event, Data, adaptation). %% Common event handling handle_common_events(info, {external_goal_update, UpdateData}, Data, _CurrentState) -> UpdatedData = integrate_external_goal_update(UpdateData, Data), {keep_state, UpdatedData}; handle_common_events(_EventType, _Event, _Data, _CurrentState) -> keep_state_and_data. terminate(_Reason, _StateName, Data) -> cleanup_goal_resources(Data), ok. %% Internal Functions generate_session_id() -> list_to_binary([ "goal_session_", atom_to_list(node()), "_", integer_to_list(erlang:system_time(microsecond)) ]). generate_goal_id() -> list_to_binary([ "goal_", integer_to_list(erlang:system_time(microsecond)), "_", integer_to_list(rand:uniform(10000)) ]). create_goal_node(GoalId, ParentId, GoalSpec, GoalType) -> #goal_node{ goal_id = GoalId, parent_goal_id = ParentId, goal_description = maps:get(description, GoalSpec, <<"">>), goal_type = GoalType, success_criteria = maps:get(success_criteria, GoalSpec, #{}), resource_requirements = maps:get(resources, GoalSpec, #{}), estimated_effort = maps:get(effort, GoalSpec, medium), priority_level = maps:get(priority, GoalSpec, normal), temporal_constraints = maps:get(temporal_constraints, GoalSpec, #{}) }. initialize_cognitive_model() -> #{ decomposition_depth => 4, optimization_preference => balanced, adaptation_sensitivity => 0.7, conflict_resolution_strategy => collaborative, learning_rate => 0.1, meta_cognitive_monitoring => enabled }. %% Placeholder implementations for complex goal operations analyze_goal_complexity(_Goal, _Data) -> #{requires_decomposition => true}. store_goal_analysis(_Analysis, Data) -> Data. mark_goal_as_atomic(_Analysis, Data) -> Data. perform_goal_decomposition(_Goal, _Data) -> {success, #{}, #{}}. merge_goal_hierarchies(_New, Existing) -> Existing. handle_partial_decomposition(_Partial, _Unresolved, Data) -> Data. try_alternative_decomposition_strategy(_Error, Data) -> {no_alternative, Data}. decompose_specific_goal(_GoalNode, _Data) -> decomposition_result. integrate_manual_decomposition(_GoalId, _Result, Data) -> Data. refine_subgoal_hierarchy(_Data) -> ok. create_new_subgoal(_ParentId, _SubgoalSpec, Data) -> {error, not_implemented}. integrate_new_subgoal(_SubgoalId, _SubgoalNode, Data) -> Data. create_dependency_graph(_Data) -> dependency_graph. validate_dependency_consistency(_Graph, _Data) -> {valid, validated_graph}. resolve_dependency_inconsistencies(_Inconsistencies, Data) -> Data. resolve_circular_dependencies(_CircularDeps, Data) -> Data. create_subgoal_dependency_link(_SourceId, _TargetId, Data) -> {error, not_implemented}. optimize_goal_execution_sequence(_Data) -> {optimized, optimized_sequence, performance_gains}. record_optimization_error(_Error, Data) -> Data. perform_manual_optimization(_Data) -> manual_optimization_result. apply_manual_optimization_result(_Result, Data) -> Data. validate_complete_goal_hierarchy(_Data) -> {valid, validation_report}. store_validation_report(_Report, Data) -> Data. fix_validation_errors(_Errors, Data) -> {unfixable, Data}. restructure_goal_hierarchy(_Needs, Data) -> Data. perform_immediate_validation(_Data) -> validation_status. create_goal_execution_plan(_Data) -> execution_plan. start_goal_progress_monitoring(_Data) -> ok. generate_progress_report(_Data) -> progress_report. should_adapt_goals(_Trigger, _Data) -> {no, no_adaptation_needed}. prepare_goal_adaptation(_Strategy, Data) -> Data. update_goal_progress(_GoalId, _Progress, Data) -> Data. mark_goal_completed(_GoalId, Data) -> Data. check_overall_completion(_Data) -> {in_progress, continuation_data}. execute_goal_adaptation(_Data) -> ok. apply_goal_adaptation(_Hierarchy, Data) -> Data. record_adaptation_failure(_Reason, Data) -> Data. merge_goal_branches_internal(_BranchIds, Data) -> {error, not_implemented}. resolve_goal_conflicts(_ConflictData, Data) -> {unresolved, unresolved_conflicts}. integrate_external_goal_update(_UpdateData, Data) -> Data. cleanup_goal_resources(_Data) -> ok. initialize_progress_tracking() -> #{}.