Papers by Lukasz Kwasniewicz
In the Internet era, proliferation of fake news can cause serious social and individual consequen... more In the Internet era, proliferation of fake news can cause serious social and individual consequences. Little is known about why Web users believe or disbelieve fake news. This article aims to make progress in this area by studying brain activity during credibility evaluation. We conducted an experiment that mimics a condition when fake news are evaluated by a person with expert knowledge. Using advanced EEG equipment, we have identified the brain areas involved in the process of verifying message credibility by using full knowledge. Based on experimental data, we have created a machine learning model using generalized logistic regression that achieved 77% accuracy under 10-fold cross-validation. Our model is a first step towards supporting expert-based fake news debunking using EEG.
The paper describes an application that allows to use a humanoid robot as a stutterer's assistant... more The paper describes an application that allows to use a humanoid robot as a stutterer's assistant and therapist. Auditory and visual feedback has been used in the therapy with a humanoid robot. For this purpose, the common method of " echo " was modified. The modification is that the speaker hears delayed speech sounds uttered by the robot. The sounds of speech coming from an external microphone are captured and delayed by a computer and then, using User Datagram Protocol (UDP), sent to the robot's system and played in its speakers. This system allows the elimination of negative feedback and external sound field's noise. The effect of this therapy is enhanced by the fact that, in addition to the effect, relating to the action of the delayed feedback, the speaker has company during the difficult process of speaking. Visual feedback has been realized as changes in the robot's hand movements according to the shape of the speech signal envelope and possibility of controlling speech with a metronome effect.
The paper describes an application that allows to use a humanoid robot as a stutterer's assistant... more The paper describes an application that allows to use a humanoid robot as a stutterer's assistant and therapist. Auditory and visual feedback has been used in the therapy with a humanoid robot. For this purpose, the common method of " echo " was modified. The modification is that the speaker hears delayed speech sounds uttered by the robot. The sounds of speech coming from an external microphone are captured and delayed by a computer and then, using User Datagram Protocol (UDP), sent to the robot's system and played in its speakers. This system allows the elimination of negative feedback and external sound field's noise. The effect of this therapy is enhanced by the fact that, in addition to the effect, relating to the action of the delayed feedback, the speaker has company during the difficult process of speaking. Visual feedback has been realized as changes in the robot's hand movements according to the shape of the speech signal envelope and possibility of controlling speech with a metronome effect.
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Papers by Lukasz Kwasniewicz