// 初始化
add_action(‘plugins_loaded’, function(){
AI_RWA_Core::init();
AI_RWA_Cron::init();
AI_RWA_JSONLD::init();
});

// 加入购物车
public static function track_add_to_cart($cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data){
self::update_recursive_weight($product_id,‘add_to_cart’);
}

// 购买完成
public static function track_purchase($order_id){
$order = wc_get_order($order_id);
foreach($order->get_items() as $item){
self::update_recursive_weight($item->get_product_id(),‘purchase’);
}
}

// 核心递推权重
public static function update_recursive_weight($product_id, $event){
$user_group = self::get_user_group(); // 可扩展用户分层
$w = (float)get_post_meta($product_id,“ai_weight_$user_group“,true);

// 奖励
$reward = 0;
if($event==‘click’) $reward=1;
if($event==‘add_to_cart’) $reward=4;
if($event==‘purchase’) $reward=10;

// 实体强化
$entity = (float)get_post_meta($product_id,‘ai_entity_score’,true);

// 商业加权
$profit = (float)get_post_meta($product_id,‘profit_margin’,true);
$inventory = (float)get_post_meta($product_id,‘inventory_score’,true);
$commercial = $profit*1.5 + $inventory*1.2;

// 递推更新
$alpha=0.5; $beta=0.3; $gamma=0.2;
$new_weight = $w + $alpha*$reward + $beta*$entity + $gamma*$commercial;

update_post_meta($product_id,“ai_weight_$user_group“,$new_weight);

// 关联商品递推
$related = wc_get_related_products($product_id);
foreach($related as $r){
$sim = self::calculate_similarity($product_id,$r);
$delta=0.1;
$rw = (float)get_post_meta($r,“ai_weight_$user_group“,true);
update_post_meta($r,“ai_weight_$user_group“,$rw + $delta*$reward*$sim);
}
}

public static function calculate_similarity($p1,$p2){
// 可自定义类别 / 标签 / 品牌相似度
return 0.5;
}

public static function get_user_group(){
// 简化示例，可扩展地域/兴趣/购买力
return ‘default’;
}
}

add_action(‘plugins_loaded’, function(){
AI_RWA_Core::init();
AI_RWA_Cron::init();
AI_RWA_JSONLD::init();
});