Adaptive learning path recommendation model for examination-oriented education

Adaptive learning paths provide individual learning objectives that best match a learner’s characteristics.This is especially helpful when learners need to balance limited available learning time and multiple learning objectives.The automatic generation of personalized learning paths to improve learning efficiency has therefore attracted significant interest.However,most current research only focuses on providing learners with adaptive objects and sequences according to their own interests or learning goals given a normal amount of time or ordinary conditions.There is little research that can help learners to obtain the most important knowledge for a test in the shortest time possible,which is a typical scenario in exanimation-oriented education systems.This study aims to solve this problem by introducing a new approach that builds on existing methods.First,the eight properties in Gardner’s multiple intelligence theory are introduced into the present knowledge and learner models to define the relationship between learning objects(LOs)and learners,thereby improving recommendation accuracy rates.Then,a novel adaptive learning path recommendation model is presented where viable knowledge topologies,knowledge bases and the previously-established properties relating to a learner’s ability are combined by Dempster-Shafer(D-S)evidence theory.A series of practical experiments were performed to assess the approach’s adaptability,the appropriateness of the selected evidence and the effectiveness of the recommendations.In the results,it was found that the proposed learning path recommendation model helped learners learn the most important elements and obtain superior test grades when confronted with limited time for learning.

The Best Walking Recommendation Path by Considering the Quality of Street Space

Walking is a healthy and green way of travel,and seeking the best recommended route is the first choice for residents to travel.In this paper,according to actual demand of pedestrians,convenience,safety,comfort and appreciation are taken as different walking needs,to construct the evaluation system of urban street space quality.Combining the shortest path algorithm,the modified walking time cost of road section and intersection delay are used as impedance,obtaining the best walking recommendation paths of convenience,safety,comfort and appreciation between the beginning and the end.Moreover,the form of questionnaire survey is used for experimental verification of final recommended path.This paper could provide residents with walking path planning scheme under different needs.When guaranteeing travel efficiency,it could effectively improve walking quality of residents,with important significance for improving the attraction of green travel mode,providing diverse selectivity,and improving residents’ health.

KG-based memory recommendation algorithm for learning path

In intelligent education,most student-oriented learning path recommendation algorithms are based on either collaborative filtering methods or a 0-1 scoring cognitive diagnosis model.Unfortunately,they fail to provide a detailed report about the students’mastery of knowledge and skill and explain the recommendation results.In addition,they are unable to offer realistic learning path recommendations based on students’learning progress.Knowledge graph based memory recommendation algorithm(KGM-RA)was proposed to solve these problems.On the one hand,KGM-RA can provide more accurate diagnosis information by continuously fitting the students’knowledge and skill proficiency vector(SKSV)in a multi-level scoring cognitive diagnosis model.On the other hand,it also proposes the forgetting recall degree(FRD)according to the statistical results of the human forgetting phenomenon.It also calculates closeness centrality in the knowledge graph to achieve the recommended recall effect consistent with the human forgetting phenomenon.Experiments show that the KGM-RA can obtain the actual learning path recommendations for students,provides the adjustable ability of FRD,and has better reliability and interpretability.