This parsing phase is grounded on a set of patterns (see Figure 3).
this first and pioneering version of the system shows encouraging results for the different tasks performed by the system that concern the detection of relevant like/dislike expressions (substantial agreement with a Fleiss kappa at 0.61), the categorization of the expressions between like and dislike (almost perfect agreement with a Fleiss kappa at 0.84) -polarity assignment -and the identification of the target type (53% of agreement between the reference and the system output).