Abstract: A method of matching a first entity to a second entity by evaluating Boolean expressions includes identifying a set of criteria vertices for a second entity vertex by traversing a graph database in a manner constrained to fact vertices identified for the second entity. The graph database relates fact vertices to the criteria vertices by edges corresponding to Boolean expressions for satisfying criteria for matching first entities to second entities. The method additionally includes selecting one of the first entities based on the criteria vertices of the set. The method further includes matching the first entity to the second entity based on the selection.

Abstract: A method of matching a panelist to a market research project includes accessing, by one or more computer processors, a set of quota cells identified for the panelist and having priorities assigned thereto. The method additionally includes selecting, by the one or more computer processors, a market research project by weighting random selection of market research projects according to the priorities assigned to their respective quota cells identified for the panelist. The method further includes matching, by the one or more computer processors, the panelist to the market research project based on the selection.