Predicting Stock Market Volatility from Candlestick Charts: A Multiple Attention Mechanism Graph Neural Network Approach

Table 2

Symbols and description.

Symbols	Definitions and descriptions
	A data graph with a set of vertices, a set of edges, and the feature representation of nodes
	The subgraph, consisting of five single-day candlesticks
	The edge between node and node
	Node feature in the aggregation layer
	Weight of node attention between graph nodes and
	Edge feature between node and node
	Correlation between the graph nodes and
	Single-layer feedforward neural network
	Weight parameters in graph learning
	Weight parameters in attention mechanism