weight_additive_two_term_impl.h File Reference

Additive dual-term weight dependence rule. More...

#include <neuron/plasticity/stdp/maths.h>
#include <neuron/plasticity/stdp/stdp_typedefs.h>
#include <neuron/synapse_row.h>
#include <debug.h>
#include "weight_two_term.h"

Go to the source code of this file.

Data Structures
struct	plasticity_weight_region_data_t
	The configuration of the rule. More...
struct	weight_state_t
	The current state data for the rule. More...

Functions
static weight_state_t	weight_get_initial (weight_t weight, index_t synapse_type)
	Gets the initial weight state.
static weight_state_t	weight_two_term_apply_depression (weight_state_t state, int32_t a2_minus, int32_t a3_minus)
	Apply the depression rule to the weight state.
static weight_state_t	weight_two_term_apply_potentiation (weight_state_t state, int32_t a2_plus, int32_t a3_plus)
	Apply the potentiation rule to the weight state.
static weight_t	weight_get_final (weight_state_t state)
	Gets the final weight.
static void	weight_decay (weight_state_t *state, int32_t decay)
static accum	weight_get_update (weight_state_t state)

Detailed Description

Additive dual-term weight dependence rule.

Definition in file weight_additive_two_term_impl.h.

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Data Structure Documentation

plasticity_weight_region_data_t

struct plasticity_weight_region_data_t

The configuration of the rule.

Definition at line 33 of file weight_additive_one_term_impl.h.

Data Fields
accum	min_weight	Minimum weight.
accum	max_weight	Maximum weight.
accum	a2_plus	Scaling factor for weight delta on potentiation. Amount to move weight on potentiation.
accum	a2_minus	Scaling factor for weight delta on depression. Amount to move weight on depression.
accum	a3_plus	Scaling factor for weight delta on potentiation.
accum	a3_minus	Scaling factor for weight delta on depression.

weight_state_t

struct weight_state_t

The current state data for the rule.

Definition at line 42 of file weight_additive_one_term_impl.h.

Data Fields
accum	weight	The starting weight. The current weight. The weight.
uint32_t	weight_shift	Weight shift to S1615 version. The shift to use when multiplying. Shift of weight to and from S1615 format.
const plasticity_weight_region_data_t *	weight_region	Reference to the configuration data.

Function Documentation

weight_get_initial()

static weight_state_t weight_get_initial ( weight_t  weight, index_t  synapse_type  )

inlinestatic

Gets the initial weight state.

Parameters

[in]	weight	The weight at the start
[in]	synapse_type	The type of synapse involved

Returns

The initial weight state.

Definition at line 63 of file weight_additive_two_term_impl.h.

weight_two_term_apply_depression()

static weight_state_t weight_two_term_apply_depression ( weight_state_t  state, int32_t  a2_minus, int32_t  a3_minus  )

inlinestatic

Apply the depression rule to the weight state.

Parameters

[in]	state	The weight state to update
[in]	a2_minus	The amount of depression to apply to term 1
[in]	a3_minus	The amount of depression to apply to term 2

Returns

the updated weight state

Definition at line 83 of file weight_additive_two_term_impl.h.

weight_two_term_apply_potentiation()

static weight_state_t weight_two_term_apply_potentiation ( weight_state_t  state, int32_t  a2_plus, int32_t  a3_plus  )

inlinestatic

Apply the potentiation rule to the weight state.

Parameters

[in]	state	The weight state to update
[in]	a2_plus	The amount of potentiation to apply to term 1
[in]	a3_plus	The amount of potentiation to apply to term 2

Returns

the updated weight state

Definition at line 97 of file weight_additive_two_term_impl.h.

weight_get_final()

static weight_t weight_get_final ( weight_state_t  state )

inlinestatic

Gets the final weight.

Parameters

[in]

state

The updated weight state

Returns

The new weight.

Definition at line 111 of file weight_additive_two_term_impl.h.

weight_decay()

static void weight_decay ( weight_state_t *  state, int32_t  decay  )

inlinestatic

Definition at line 115 of file weight_additive_two_term_impl.h.

weight_get_update()

static accum weight_get_update ( weight_state_t  state )

inlinestatic

Definition at line 119 of file weight_additive_two_term_impl.h.