From September 22 to 24, 2021, the 16th international conference on operations research was organized by the Slovenian Operational Research Society. The epidemics situation made the organizers conduct it in a remote form as an online event. The conference schedule is available at the conference website: https://sor.fov.um.si/. In the SOR'21 conference, the representatives of the University of Economics in Katowice and the N.EA team were participating. A regular social event for the SOR conference is also a piano concert performed by prof. Tadeusz Trzaskalik from University of Economics in Katowice.

In the SOR'21 conference, two presentations were given by N.EA team members:

• Jakub Mróz, Tomasz Wachowicz: The Dyadic Analysis Of The Impact Of Conflict-handling Style On Negotiation Outcomes In Software Supported Negotiations (see presentation),
• Tomasz Wachowicz, Ewa Roszkowska, Krzysztof Piasecki, Marzena Filipowicz-Chomko: Analyzing the concordance of principals' preference representation by agents with different decision-making profiles using generalized fuzzy approach (see presentation).

In the first presentation, the impact of the negotiation profile on the electronic negotiation outcome was studied. The symmetric analytic perspective was assumed, and an Ator-Partner Interdependence Model was used. The results clearly show that neither actor nor partner effect can be identified. Some dependencies can be investigated by changing the analytic granulation and using classic clustering. In the second presentation, we analyzed the impact of information processing style (measured through GDMS inventory) on the accuracy of preference representation. A principal-agent context of decision-making was considered. We used an aggregation approach based on the generalized fuzzy scoring system to measure the agents' representation of principals' preferences, theoretically discussed earlier by Piasecki et al. (2021). Fuzzy Representation of Principal's Preferences in Inspire Negotiation Support System. Entropy. 23(8), 981; https://doi.org/10.3390/e23080981