J 2015

Student Modeling Based on Problem Solving Times

PELÁNEK, Radek a Petr JARUŠEK

Základní údaje

Originální název

Student Modeling Based on Problem Solving Times

Autoři

PELÁNEK, Radek (203 Česká republika, garant, domácí) a Petr JARUŠEK (203 Česká republika, domácí)

Vydání

International Journal of Artificial Intelligence in Education, 2015, 1560-4292

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10201 Computer sciences, information science, bioinformatics

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14330/15:00086953

Organizační jednotka

Fakulta informatiky

DOI

UT WoS

000213961100002

Klíčová slova anglicky

student modeling; problem solving; time

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 31. 3. 2016 14:57, doc. Mgr. Radek Pelánek, Ph.D.

Anotace

V originále

Student modeling in intelligent tutoring systems is mostly concerned with modeling correctness of students' answers. As interactive problem solving activities become increasingly common in educational systems, it is useful to focus also on timing information associated with problem solving. We argue that the focus on timing is natural for certain types of educational problems and we describe a simple model of problem solving times which assumes a linear relationship between a latent problem solving skill and a logarithm of a time to solve a problem. The model is closely related to models from two different areas: the item response theory and collaborative filtering. We describe two parameter estimation techniques for the model and several extensions - models with multidimensional skill, learning, or variability of performance. We describe an application of the proposed models in a widely used computerized practice system. Using both simulated data and real data from the system we evaluate the model, analyse its parameter values, and discuss the insight into problem difficulty which the model brings.