  Tests are essential in Information Retrieval (IR), in order to evaluate the
effectiveness of a query. Tests intended to exhibit the sense of words in
con-text were undertaken and linked with Quantum Mechanics (QM). Poll tests
were undertaken on heterogeneous media such as music and polysemy in foreign
languages. Interference effects are shown in the results. Bell inequality was
used leading to a significant spread in the results of the poll tests but
without violating the classical limit. Then an automatic pertinence measure
tool on texts has been developed using the HAL algorithm using an orthonormal
vector decomposition model. In this case the spread in the values can lead to
the violation of the Bell inequality even beyond Cirel'son bound.
