class ngraph::op::v1::TopK

Overview

Computes indices and values of the k maximum/minimum values for each slice along specified axis. More…

#include <topk.hpp>

class TopK: public ngraph::op::Op
{
public:
    // typedefs

    typedef TopKSortType SortType;
    typedef TopKMode Mode;

    // fields

    static constexpr NodeTypeInfo type_info {"TopK", 1};

    // construction

    TopK();

    TopK(
        const Output<Node>& data,
        const Output<Node>& k,
        const int64_t axis,
        const std::string& mode,
        const std::string& sort,
        const element::Type& index_element_type = element::i32
        );

    TopK(
        const Output<Node>& data,
        const Output<Node>& k,
        const int64_t axis,
        const Mode mode,
        const SortType sort,
        const element::Type& index_element_type = element::i32
        );

    // methods

    virtual const NodeTypeInfo& get_type_info() const;
    virtual bool visit_attributes(AttributeVisitor& visitor);
    virtual void validate_and_infer_types();
    virtual std::shared_ptr<Node> clone_with_new_inputs(const OutputVector& new_args) const;
    virtual size_t get_version() const;
    uint64_t get_axis() const;
    int64_t get_provided_axis() const;
    void set_axis(const int64_t axis);
    Mode get_mode() const;
    void set_mode(const Mode mode);
    SortType get_sort_type() const;
    void set_sort_type(const SortType sort);
    element::Type get_index_element_type() const;
    void set_index_element_type(const element::Type& index_element_type);
    size_t get_k() const;
    void set_k(size_t k);
    virtual size_t get_default_output_index() const;

    virtual bool evaluate(
        const HostTensorVector& output_values,
        const HostTensorVector& input_values
        ) const;

    virtual bool has_evaluate() const;
};

// direct descendants

class TopK;

Inherited Members

public:
    // typedefs

    typedef DiscreteTypeInfo type_info_t;
    typedef std::map<std::string, std::shared_ptr<Variant>> RTMap;

    // fields

    NGRAPH_DEPRECATED("The tensor name was deprecated. Use get_input_tensor(i).get_names() instead.") const std std::unordered_set<descriptor::Tensor*> liveness_new_list;
    std::unordered_set<descriptor::Tensor*> liveness_free_list;

    // methods

    virtual void validate_and_infer_types();
    void constructor_validate_and_infer_types();
    virtual bool visit_attributes(AttributeVisitor&);
    virtual const op::AutoBroadcastSpec& get_autob() const;
    virtual bool has_evaluate() const;

    virtual bool evaluate(
        const HostTensorVector& output_values,
        const HostTensorVector& input_values
        ) const;

    virtual bool evaluate(
        const HostTensorVector& output_values,
        const HostTensorVector& input_values,
        const EvaluationContext& evaluationContext
        ) const;

    virtual bool evaluate_lower(const HostTensorVector& output_values) const;
    virtual bool evaluate_upper(const HostTensorVector& output_values) const;

    virtual bool constant_fold(
        OutputVector& output_values,
        const OutputVector& inputs_values
        );

    virtual OutputVector decompose_op() const;
    virtual const type_info_t& get_type_info() const = 0;
    const char* get_type_name() const;
    void set_arguments(const NodeVector& arguments);
    void set_arguments(const OutputVector& arguments);
    void set_argument(size_t position, const Output<Node>& argument);

    void set_output_type(
        size_t i,
        const element::Type& element_type,
        const PartialShape& pshape
        );

    void set_output_size(size_t output_size);
    void invalidate_values();
    virtual void revalidate_and_infer_types();
    virtual std::string description() const;
    const std::string& get_name() const;
    void set_friendly_name(const std::string& name);
    const std::string& get_friendly_name() const;
    virtual bool is_dynamic() const;
    size_t get_instance_id() const;
    virtual std::ostream& write_description(std::ostream& os, uint32_t depth = 0) const;
    const std::vector<std::shared_ptr<Node>>& get_control_dependencies() const;
    const std::vector<Node*>& get_control_dependents() const;
    void add_control_dependency(std::shared_ptr<Node> node);
    void remove_control_dependency(std::shared_ptr<Node> node);
    void clear_control_dependencies();
    void clear_control_dependents();
    void add_node_control_dependencies(std::shared_ptr<Node> source_node);
    void add_node_control_dependents(std::shared_ptr<Node> source_node);
    void transfer_control_dependents(std::shared_ptr<Node> replacement);
    size_t get_output_size() const;
    const element::Type& get_output_element_type(size_t i) const;
    const element::Type& get_element_type() const;
    const Shape& get_output_shape(size_t i) const;
    const PartialShape& get_output_partial_shape(size_t i) const;
    Output<const Node> get_default_output() const;
    Output<Node> get_default_output();
    virtual size_t get_default_output_index() const;
    size_t no_default_index() const;
    const Shape& get_shape() const;
    descriptor::Tensor& get_output_tensor(size_t i) const;
    descriptor::Tensor& get_input_tensor(size_t i) const;
    NGRAPH_DEPRECATED("The tensor name was deprecated. Use get_output_tensor(i).get_names() instead.") const std std::set<Input<Node>> get_output_target_inputs(size_t i) const;
    size_t get_input_size() const;
    const element::Type& get_input_element_type(size_t i) const;
    const Shape& get_input_shape(size_t i) const;
    const PartialShape& get_input_partial_shape(size_t i) const;
    Node* get_input_node_ptr(size_t index) const;
    std::shared_ptr<Node> get_input_node_shared_ptr(size_t index) const;
    Output<Node> get_input_source_output(size_t i) const;
    virtual std::shared_ptr<Node> clone_with_new_inputs(const OutputVector& inputs) const = 0;
    std::shared_ptr<Node> copy_with_new_inputs(const OutputVector& new_args) const;

    std::shared_ptr<Node> copy_with_new_inputs(
        const OutputVector& inputs,
        const std::vector<std::shared_ptr<Node>>& control_dependencies
        ) const;

    bool has_same_type(std::shared_ptr<const Node> node) const;
    RTMap& get_rt_info();
    const RTMap& get_rt_info() const;
    const std::unordered_set<std::string>& get_provenance_tags() const;
    void add_provenance_tag(const std::string& tag);

    template <typename T>
    void add_provenance_tags(T tag_set);

    void add_provenance_tags_above(
        const OutputVector& base,
        const std::unordered_set<std::string>& tag_set
        );

    void remove_provenance_tag(const std::string& tag);
    void add_provenance_group_member(const std::shared_ptr<Node>& node);
    void remove_provenance_group_member(const std::shared_ptr<Node>& node);

    void replace_provenance_group_member(
        const std::shared_ptr<Node>& current_node,
        const std::shared_ptr<Node>& replacement_node
        );

    const std::set<std::shared_ptr<Node>>& get_provenance_group_members() const;
    std::shared_ptr<Node> add_provenance_group_members_above(const OutputVector& base);
    void merge_provenance_tags_from(const std::shared_ptr<const Node>& source);
    void transfer_provenance_tags(const std::shared_ptr<Node>& replacement);
    NodeVector get_users(bool check_is_used = false) const;
    virtual size_t get_version() const;
    virtual std::shared_ptr<Node> get_default_value() const;
    bool operator < (const Node& other) const;
    std::vector<Input<Node>> inputs();
    std::vector<Input<const Node>> inputs() const;
    std::vector<Output<Node>> input_values() const;
    std::vector<Output<Node>> outputs();
    std::vector<Output<const Node>> outputs() const;
    Input<Node> input(size_t input_index);
    Input<const Node> input(size_t input_index) const;
    Output<Node> input_value(size_t input_index) const;
    Output<Node> output(size_t output_index);
    Output<const Node> output(size_t output_index) const;
    void set_op_annotations(std::shared_ptr<ngraph::op::util::OpAnnotations> op_annotations);
    std::shared_ptr<ngraph::op::util::OpAnnotations> get_op_annotations() const;

    virtual bool match_value(
        pattern::Matcher* matcher,
        const Output<Node>& pattern_value,
        const Output<Node>& graph_value
        );

    virtual bool match_node(
        pattern::Matcher* matcher,
        const Output<Node>& graph_value
        );

Detailed Documentation

Computes indices and values of the k maximum/minimum values for each slice along specified axis.

Construction

TopK()

Constructs a TopK operation.

TopK(
    const Output<Node>& data,
    const Output<Node>& k,
    const int64_t axis,
    const std::string& mode,
    const std::string& sort,
    const element::Type& index_element_type = element::i32
    )

Constructs a TopK operation with two outputs: values and indices. By default the indices output is described by i32 data type.

Parameters:

data

The input tensor

k

Specifies how many maximum/minimum elements should be computed (note: scalar input tensor)

axis

The axis along which to compute top k indices

mode

Specifies which operation (min or max) is used to select the biggest element of two.

sort

Specifies order of output elements and/or indices Accepted values: none, index, value

index_element_type

Specyfies type of produced indices

Methods

virtual const NodeTypeInfo& get_type_info() const

Returns the NodeTypeInfo for the node’s class. During transition to type_info, returns a dummy type_info for Node if the class has not been updated yet.

virtual void validate_and_infer_types()

Verifies that attributes and inputs are consistent and computes output shapes and element types. Must be implemented by concrete child classes so that it can be run any number of times.

Throws if the node is invalid.

virtual size_t get_version() const

Returns:

Version of this node

uint64_t get_axis() const

Returns axis value after normalization.

If input rank required to normalization is dynamic, the exception is thrown

int64_t get_provided_axis() const

Returns axis value before normalization.

size_t get_k() const

Returns the value of K, if available.

If the second input to this op is a constant, the value is retrieved and returned. If the input is not constant(dynamic) this method returns 0

virtual size_t get_default_output_index() const

Returns the output of the default output, or throws if there is none.

virtual bool evaluate(
    const HostTensorVector& output_values,
    const HostTensorVector& input_values
    ) const

Evaluates the op on input_values putting results in output_values.

Parameters:

output_values

Tensors for the outputs to compute. One for each result

input_values

Tensors for the inputs. One for each inputs.

Returns:

true if successful

virtual bool has_evaluate() const

Allows to get information about availability of evaluate method for the current operation.