model.dot

digraph model{
	obsHelp [label="Extrinsic Helpfulness %" style=filled color=lightblue]
	subgraph truProcess {
		rank = same
		truHelp [label="Intrinsic Helpfulness %"]
		topics  [label="Number of New Topics" style=filled color=lightsalmon]
	}
	subgraph noise{
		rank = same
		norm    [label="Per-Movie Normalization" style=filled color=lightgrey]
		winner  [label="Total Number of Reviews" style=filled color=lightgrey]
		time    [label="Posting Time" style=filled color=lightgrey]
	}
	subgraph feats{
		rank = same
		lexfeat [label="Lexical Features" style=filled color=lightgrey]
		strfeat [label="Structural Features" style=filled color=lightgrey]
		synfeat [label="Syntactic Features" style=filled color=lightgrey]
		semfeat [label="Semantic Features" style=filled color=lightgrey]
		metfeat [label="Meta-Info Features" style=filled color=lightgrey]
	}

	obsHelp->truHelp [style=invis]
	truHelp->obsHelp [constraint=false]
	norm->obsHelp
	winner->obsHelp
	time->obsHelp
	topics->truHelp
	truHelp->lexfeat
	truHelp->strfeat
	truHelp->synfeat
	truHelp->semfeat
	truHelp->metfeat
}