CareerCup

Person is linked to Entities. An entity would be another person, page etc. The feature set would be the reference set of an entity by that person. And a reference would be weighted.

class Reference {
	private:
		Entity referrer;
		Entity referred;
		unsigned int weight;
		
		// Responsible for taking actions on Reference
		// example weights of a reference will be re-evaluated
		class ReferenceCallback {
			public:
				void readjust(unsigned int deltaWeight);
		};
	public:
		// Resets callback, and reassigns the weight
		void reset(unsigned int weight);
		// Only reassigns the weight
		void reassign(unsigned int weight);
};

class Entity {
	private:
		string id;
		string name;
		string description;
};

class Person : public Entity {
	public:
		unsigned int age;
		Friends* friends;
};

class Page {
	public:
		
};

// Responsible for cooking references between two entities
class ReferenceFactory {
	public:
		// checks if reference is already there, resets the values
		Reference& addReference(Entity& referrer, Entity& referred);
	private:
		// ReferenceCallback is added to readjust after timeout
		Timer* timer;
};

class Timer {
	public:
		void setTimer(ReferenceCallback& referenceCallback, int action);
};

Person is linked to Entities. An entity would be another person, page etc. The feature set would be the reference set of an entity by that person. And a reference would be weighted.

class Reference {
	private:
		Entity referrer;
		Entity referred;
		unsigned int weight;
		
		// Responsible for taking actions on Reference
		// example weights of a reference will be re-evaluated
		class ReferenceCallback {
			public:
				void readjust(unsigned int deltaWeight);
		};
	public:
		// Resets callback, and reassigns the weight
		void reset(unsigned int weight);
		// Only reassigns the weight
		void reassign(unsigned int weight);
};

class Entity {
	private:
		string id;
		string name;
		string description;
};

class Person : public Entity {
	public:
		unsigned int age;
		Friends* friends;
};

class Page {
	public:
		
};

// Responsible for cooking references between two entities
class ReferenceFactory {
	public:
		// checks if reference is already there, resets the values
		Reference& addReference(Entity& referrer, Entity& referred);
	private:
		// ReferenceCallback is added to readjust after timeout
		Timer* timer;
};

class Timer {
	public:
		void setTimer(ReferenceCallback& referenceCallback, int action);
};