Search results for "NP-difficulty"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
77	Jeonghyun Kim	Task difficulty in information searching behavior: expected difficulty and experienced difficulty.	JCDL	2005	DBLP DOI BibTeX RDF	information searching behavior, task, task difficulty
56	David Carmel, Elad Yom-Tov	Estimating the query difficulty for information retrieval.	SIGIR	2010	DBLP DOI BibTeX RDF	query difficulty estimation, retrieval robustness, performance prediction
56	Olana Missura, Thomas Gärtner 0001	Player Modeling for Intelligent Difficulty Adjustment.	Discovery Science	2009	DBLP DOI BibTeX RDF	player modeling, difficulty adjustment, clustering, supervised learning
56	Brian de Alwis, Gail C. Murphy, Shawn Minto	Creating a cognitive metric of programming task difficulty.	CHASE	2008	DBLP DOI BibTeX RDF	cognitive metrics, experimentation, task difficulty
52	Maria-Virginia Aponte, Guillaume Levieux, Stéphane Natkin	Scaling the Level of Difficulty in Single Player Video Games.	ICEC	2009	DBLP DOI BibTeX RDF	difficulty, evaluation, learning, video games, challenge
52	Jeonghyun Kim	Task difficulty as a predictor and indicator of web searching interaction.	CHI Extended Abstracts	2006	DBLP DOI BibTeX RDF	information searching interaction, world-wide web, task, task difficulty, information seeking behavior
48	Chang Yun, Dvijesh J. Shastri, Ioannis T. Pavlidis, Zhigang Deng	O' game, can you feel my frustration?: improving user's gaming experience via stresscam.	CHI	2009	DBLP DOI BibTeX RDF	game difficulty adjustment, stress monitoring, human-computer interaction, video games, thermal imaging
43	Sharon L. Oviatt, Rachel Coulston, Rebecca Lunsford	When do we interact multimodally?: cognitive load and multimodal communication patterns.	ICMI	2004	DBLP DOI BibTeX RDF	dialogue context, system adaptation, unimodal interaction, multimodal interaction, cognitive load, individual differences, human performance, multimodal integration, task difficulty, speech and pen input
43	Falk Scholer, Steven Garcia	A case for improved evaluation of query difficulty prediction.	SIGIR	2009	DBLP DOI BibTeX RDF	query difficulty prediction, evaluation
43	Steven M. Gustafson, Anikó Ekárt, Edmund K. Burke, Graham Kendall	Problem Difficulty and Code Growth in Genetic Programming.	Genet. Program. Evolvable Mach.	2004	DBLP DOI BibTeX RDF	genetic programming, problem difficulty, population diversity, code growth
43	Rita Kuo, Wei-Peng Lien, Maiga Chang, Jia-Sheng Heh	Difficulty Analysis for Learners in Problem Solving Process Based on the Knowledge Map.	ICALT	2003	DBLP DOI BibTeX RDF
39	Martin Pelikan	NK landscapes, problem difficulty, and hybrid evolutionary algorithms.	GECCO	2010	DBLP DOI BibTeX RDF	correlation length, escape rate, fitness distance correlation, hboa, performance analysis, estimation of distribution algorithms, hierarchical boa, problem difficulty, hybrid evolutionary algorithms, nk fitness landscape
39	Audrey Girouard, Erin Treacy Solovey, Leanne M. Hirshfield, Krysta Chauncey, Angelo Sassaroli, Sergio Fantini, Robert J. K. Jacob	Distinguishing Difficulty Levels with Non-invasive Brain Activity Measurements.	INTERACT (1)	2009	DBLP DOI BibTeX RDF	functional near-infrared spectroscopy, task classification, difficulty level, game, Brain-computer interface, human cognition, fNIRS
39	Adrian Schwaninger, Stefan Michel, Anton Bolfing	A statistical approach for image difficulty estimation in x-ray screening using image measurements.	APGV	2007	DBLP DOI BibTeX RDF	airport security, image difficulty estimation, image measurements, x-ray screening, statistical modeling, image metrics
39	Eric C. Jensen, Steven M. Beitzel, David A. Grossman, Ophir Frieder, Abdur Chowdhury	Predicting query difficulty on the web by learning visual clues.	SIGIR	2005	DBLP DOI BibTeX RDF	web search, query difficulty
38	Jeonghyun Kim	Task Difficulty in Information Searching Behavior: Expected Difficulty and Experienced Difficulty.	Bull. IEEE Tech. Comm. Digit. Libr.	2005	DBLP BibTeX RDF
35	David Carmel, Elad Yom-Tov, Adam Darlow, Dan Pelleg	What makes a query difficult?	SIGIR	2006	DBLP DOI BibTeX RDF	query difficulty
34	Jingjing Liu 0007, Chang Liu 0007, Jacek Gwizdka, Nicholas J. Belkin	Can search systems detect users' task difficulty?: some behavioral signals.	SIGIR	2010	DBLP DOI BibTeX RDF	first dwell time, queries, task type, task difficulty, dwell time
34	Zeyuan Allen Zhu, Weizhu Chen, Tao Wan, Chenguang Zhu, Gang Wang 0010, Zheng Chen 0001	To divide and conquer search ranking by learning query difficulty.	CIKM	2009	DBLP DOI BibTeX RDF	learning to rank, query difficulty
34	Kirsten Schlüter, Torsten Brinda	The attributes of task difficulty in informatics in secondary education: first results of an empirical study.	ITiCSE	2009	DBLP DOI BibTeX RDF	criteria of task difficulty, secondary computer science education, taxonomy, competence model, didactics of informatics
34	Leonardo Vanneschi, Andrea Valsecchi, Riccardo Poli	Limitations of the fitness-proportional negative slope coefficient as a difficulty measure.	GECCO	2009	DBLP DOI BibTeX RDF	fitness clouds, fitness-proportional negative slope coefficient, fitness landscapes, problem difficulty
34	Akira Osada, Daigo Ozawa, Naoyuki Kitazawa, Haruhiko Kaiya, Kenji Kaijiri	Proposing metrics of difficulty of domain knowledge using usecase diagrams.	SAC	2008	DBLP DOI BibTeX RDF	difficulty level, each stakeholder, usecase diagram, domain knowledge
34	Robin Hunicke	The case for dynamic difficulty adjustment in games.	Advances in Computer Entertainment Technology	2005	DBLP DOI BibTeX RDF	dynamic difficulty adjustment, AI, video games, computer entertainment
34	Yunli Wang	Automatic Recognition of Text Difficulty from Consumers Health Information.	CBMS	2006	DBLP DOI BibTeX RDF
34	J. G. W. Bentley, Peter G. Bishop, Meine van der Meulen	An Empirical Exploration of the Difficulty Function.	SAFECOMP	2004	DBLP DOI BibTeX RDF
30	Elad Yom-Tov, Shai Fine, David Carmel, Adam Darlow	Learning to estimate query difficulty: including applications to missing content detection and distributed information retrieval.	SIGIR	2005	DBLP DOI BibTeX RDF	query difficulty estimation
30	Daisuke Doyo	Internal Aspects of the Relationship between Pressing Force and Training Difficulty.	HCI (8)	2009	DBLP DOI BibTeX RDF
30	Christina Lioma, Roi Blanco, Raquel Mochales Palau, Marie-Francine Moens	A Belief Model of Query Difficulty That Uses Subjective Logic.	ICTIR	2009	DBLP DOI BibTeX RDF
30	Indradeep Ghosh, Mukul R. Prasad	A Technique for Estimating the Difficulty of a Formal Verification Problem.	ISQED	2006	DBLP DOI BibTeX RDF
30	Hwa-Young Jeong	Learner's Tailoring E-Learning System on the Item Revision Difficulty Using PetriNet.	VSMM	2006	DBLP DOI BibTeX RDF
26	Leonardo Vanneschi	Fitness landscapes and problem hardness in genetic programming.	GECCO (Companion)	2010	DBLP DOI BibTeX RDF	genetic programming, fitness landscapes, problem difficulty
26	Kirsten Schlüter, Torsten Brinda	Characteristics and dimensions of a competence model of theoretical computer science in secondary education.	ITiCSE	2008	DBLP DOI BibTeX RDF	characteristics of task difficulty, competence profiles, secondary computer science education, educational standards, competence model, didactics of informatics, theoretical computer science
26	Ming-Hung Hsu, Ming-Feng Tsai, Hsin-Hsi Chen	Combining WordNet and ConceptNet for Automatic Query Expansion: A Learning Approach.	AIRS	2008	DBLP DOI BibTeX RDF	ConceptNet, Query Expansion, WordNet, Query Difficulty
26	Feng Lu, Xin Li, Qingtang Liu, Zongkai Yang, Guoxin Tan, Tingting He	Research on Personalized E-Learning System Using Fuzzy Set Based Clustering Algorithm.	International Conference on Computational Science (3)	2007	DBLP DOI BibTeX RDF	Difficulty level, Learner ability, Fuzzy clustering algorithm
26	Sung-Soon Choi, Yung-Keun Kwon, Byung Ro Moon	Properties of symmetric fitness functions.	GECCO	2006	DBLP DOI BibTeX RDF	Walsh analysis, problem difficulty measures, search space analysis, symmetric fitness functions, encoding scheme
26	Alan Piszcz, Terence Soule	Genetic programming: optimal population sizes for varying complexity problems.	GECCO	2006	DBLP DOI BibTeX RDF	MAX binary tree problem, binomial-3, optimal, population sizing, problem difficulty
26	Marc J. Ouellette, Eugene Fiume	On numerical solutions to one-dimensional integration problems with applications to linear light sources.	ACM Trans. Graph.	2001	DBLP DOI BibTeX RDF	Difficulty-driven compound quadrature, Voronoi sampling, linear light sources, periodogram, integration, rendering, performance profile, numerical quadrature, stochastic sampling
26	Jack Tigh Dennerlein, David B. Martin 0002, Christopher J. Hasser	Force-feedback improves performance for steering and combined steering-targeting tasks.	CHI	2000	DBLP DOI BibTeX RDF	index of difficulty, steering task, targeting task, haptic, force-feedback, Fitts' law, mouse, pointing devices
26	Scott L. Schneberger	Software maintenance in distributed computer environments: system complexity versus component simplicity.	ICSM	1995	DBLP DOI BibTeX RDF	component simplicity, distributed system software maintenance, software maintenance difficulty, diametrics, information systems complexity, empirical quantitative data, empirical qualitative data, information systems, software maintenance, software maintenance, distributed processing, conceptual model, systems analysis, distributed computer environments, IS professionals, technological change, system complexity, information system architectures
26	Robert W. Reeder, Roy A. Maxion	User Interface Defect Detection by Hesitation Analysis.	DSN	2006	DBLP DOI BibTeX RDF
26	Hidehiko Okada, Takayuki Akiba, Ryosuke Fujioka	Investigation on Relation between Index of Difficulty in Fitts' Law and Device Screen Sizes.	HCI (9)	2009	DBLP DOI BibTeX RDF	Fitts’ law, touch user interface, usability, throughput, smart phone, error rate, small screen
26	Bin Xin 0002, Jie Chen 0003, Feng Pan 0003	Problem difficulty analysis for particle swarm optimization: deception and modality.	GEC Summit	2009	DBLP DOI BibTeX RDF	particle swarm optimization, global optimization, problem hardness
26	Guillaume Chanel, Cyril Rebetez, Mireille Bétrancourt, Thierry Pun	Boredom, engagement and anxiety as indicators for adaptation to difficulty in games.	MindTrek	2008	DBLP DOI BibTeX RDF	emotion assessment, gaming engagement, physiological signals processing and classification, SVM, GSR
26	Anne-Marie Vercoustre, Jovan Pehcevski, Vladimir Naumovski	Topic Difficulty Prediction in Entity Ranking.	INEX	2008	DBLP DOI BibTeX RDF
26	Joyca Lacroix, Privender Saini, Roger Holmes	The relationship between goal difficulty and performance in the context of a physical activity intervention program.	Mobile HCI	2008	DBLP DOI BibTeX RDF	mobile persuasion, physical activity intervention, timely feedback, behavioral change, goal setting
26	Darren Doherty, Colm O'Riordan	Evolving team behaviours in environments of varying difficulty.	Artif. Intell. Rev.	2007	DBLP DOI BibTeX RDF	Team behaviours, Team evolution, Shooter games, Genetic programming
26	Margit Kastner, Gerhard Furtmüller	Operationalization of the Metadata Element "Difficulty".	ICALT	2007	DBLP DOI BibTeX RDF
26	Dehai Zhang, Yao Zhu	Measuring Learning Difficulty Level by Comparing Ontologies.	FSKD (2)	2007	DBLP DOI BibTeX RDF
26	Frank L. Greitzer	Toward the development of cognitive task difficulty metrics to support intelligence analysis research.	IEEE ICCI	2005	DBLP DOI BibTeX RDF
26	Andrew Czarn, Cara MacNish, Kaipillil Vijayan, Berwin A. Turlach	Statistical Exploratory Analysis of Genetic Algorithms: The Influence of Gray Codes upon the Difficulty of a Problem.	Australian Conference on Artificial Intelligence	2004	DBLP DOI BibTeX RDF
26	Leonardo Vanneschi, Marco Tomassini, Manuel Clergue, Philippe Collard	Difficulty of Unimodal and Multimodal Landscapes in Genetic Programming.	GECCO	2003	DBLP DOI BibTeX RDF
25	Bowen Chen, Xiao Ding, Yi Zhao, Bo Fu, Tingmao Lin, Bing Qin 0001, Ting Liu 0001	Text Difficulty Study: Do Machines Behave the Same as Humans Regarding Text Difficulty?	Mach. Intell. Res.	2024	DBLP DOI BibTeX RDF
25	Mahir Akgun, Sacip Toker	An Investigation on Task Difficulty: Does Task Difficulty Depend on the Technology Used in Task Completion?	SIGCSE (2)	2024	DBLP DOI BibTeX RDF
25	Anan Schütt, Tobias Huber, Jauwairia Nasir, Cristina Conati, Elisabeth André	Does Difficulty even Matter? Investigating Difficulty Adjustment and Practice Behavior in an Open-Ended Learning Task.	LAK	2024	DBLP DOI BibTeX RDF
25	Unggi Lee, Sungjun Yoon, Joon Seo Yun, Kyoungsoo Park, Younghoon Jung, Damji Stratton, Hyeoncheol Kim	Difficulty-Focused Contrastive Learning for Knowledge Tracing with a Large Language Model-Based Difficulty Prediction.	CoRR	2023	DBLP DOI BibTeX RDF
25	Xiaoling Zhou, Ou Wu, Weiyao Zhu, Ziyang Liang	Understanding Difficulty-based Sample Weighting with a Universal Difficulty Measure.	CoRR	2023	DBLP DOI BibTeX RDF
25	Anan Schütt, Tobias Huber, Jauwairia Nasir, Cristina Conati, Elisabeth André	Does Difficulty even Matter? Investigating Difficulty Adjustment and Practice Behavior in an Open-Ended Learning Task.	CoRR	2023	DBLP DOI BibTeX RDF
25	Yusuke Goutsu, Tetsunari Inamura	Instant Difficulty Adjustment: Predicting Success Rate of VR Kendama when Changing the Difficulty Level.	AHs	2023	DBLP DOI BibTeX RDF
25	Shunta Sakaue, Taiju Kimura, Hiroki Nishino	Reducing Objective Difficulty Without Influencing Subjective Difficulty in a Video Game.	MMAsia	2023	DBLP DOI BibTeX RDF
25	Saptarshi Sinha, Hiroki Ohashi	Difficulty-Net: Learning to Predict Difficulty for Long-Tailed Recognition.	WACV	2023	DBLP DOI BibTeX RDF
25	Mohammad Ridwan Kabir, Mohammad Ishrak Abedin, Rizvi Ahmed, Hasan Mahmud, Md. Kamrul Hasan 0006	ANTASID: A Novel Temporal Adjustment to Shannon's Index of Difficulty for Quantifying the Perceived Difficulty of Uncontrolled Pointing Tasks.	IEEE Access	2022	DBLP DOI BibTeX RDF
25	Saptarshi Sinha, Hiroki Ohashi	Difficulty-Net: Learning to Predict Difficulty for Long-Tailed Recognition.	CoRR	2022	DBLP DOI BibTeX RDF
25	Bowen Chen, Xiao Ding, Li Du, Bing Qin 0001, Ting Liu 0001	Text Difficulty Study: Do machines behave the same as humans regarding text difficulty?	CoRR	2022	DBLP DOI BibTeX RDF
25	Xiaoling Zhou, Ou Wu, Weiyao Zhu, Ziyang Liang	Understanding Difficulty-Based Sample Weighting with a Universal Difficulty Measure.	ECML/PKDD (3)	2022	DBLP DOI BibTeX RDF
25	Fernando Martínez-Plumed, David Castellano Falcón, Carlos Monserrat Aranda, José Hernández-Orallo	When AI Difficulty Is Easy: The Explanatory Power of Predicting IRT Difficulty.	AAAI	2022	DBLP DOI BibTeX RDF
25	Venkata Sriram Siddhardh Nadendla, Lav R. Varshney	A Difficulty in Controlling Blockchain Mining Costs via Cryptopuzzle Difficulty.	CoRR	2020	DBLP BibTeX RDF
25	Kun Huang, Jiaqi Chen, Chang Liu 0007, Lulu Zhang	A Comparative Study of the Relationship between the Subjective Difficulty, Objective Difficulty of Search Tasks and Search Behaviors.	JCDL	2020	DBLP DOI BibTeX RDF
25	Irina Pandarova, Torben Schmidt, Johannes Hartig, Ahcène Boubekki, Roger Dale Jones, Ulf Brefeld	Predicting the Difficulty of Exercise Items for Dynamic Difficulty Adaptation in Adaptive Language Tutoring.	Int. J. Artif. Intell. Educ.	2019	DBLP DOI BibTeX RDF
25	Binglin Chen, Matthew West 0001, Craig B. Zilles	Predicting the difficulty of automatic item generators on exams from their difficulty on homeworks.	L@S	2019	DBLP DOI BibTeX RDF
25	Josiane Mothe, Léa Laporte, Adrian-Gabriel Chifu	Predicting Query Difficulty in IR: Impact of Difficulty Definition.	KSE	2019	DBLP DOI BibTeX RDF
25	Justin G. Storms, Dawn M. Tilbury	A New Difficulty Index for Teleoperated Robots Driving through Obstacles - How Environment Difficulty, Communication Delay and Autonomy Level Affect Performance.	J. Intell. Robotic Syst.	2018	DBLP DOI BibTeX RDF
25	Dagmara Dziedzic, Wojciech Wlodarczyk	Approaches to Measuring the Difficulty of Games in Dynamic Difficulty Adjustment Systems.	Int. J. Hum. Comput. Interact.	2018	DBLP DOI BibTeX RDF
25	Julian Frommel, Fabian Fischbach, Katja Rogers, Michael Weber 0001	Emotion-based Dynamic Difficulty Adjustment Using Parameterized Difficulty and Self-Reports of Emotion.	CHI PLAY	2018	DBLP DOI BibTeX RDF
25	Upendra Kumar, Vishal Kumar Rana, Srinivas PYKL, Amitava Das	"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty" - Understanding the psycho-sociological influences to it.	ICON	2017	DBLP BibTeX RDF
25	Dennis Ang	Difficulty in Video Games: Understanding the Effects of Dynamic Difficulty Adjustment in Video Games on Player Experience.	Creativity & Cognition	2017	DBLP DOI BibTeX RDF
25	Jing Liu 0006, Hussein A. Abbass, David G. Green, Weicai Zhong	Motif Difficulty (MD): A Predictive Measure of Problem Difficulty for Evolutionary Algorithms Using Network Motifs.	Evol. Comput.	2012	DBLP DOI BibTeX RDF
22	Juan Arturo Herrera Ortiz, Carlos Oliver-Morales, Katya Rodríguez-Vázquez	Amount and type of information: a GA-hardness taxonomy.	GECCO	2010	DBLP DOI BibTeX RDF	evolutionary algorithms, problem difficulty
22	Arne von Öhsen, Jörn Loviscach	Dead on Arrival: Adapting Games to Finish at a Given Time or Location.	INTETAIN	2009	DBLP DOI BibTeX RDF	game difficulty adaptation, automated content creation, location-based service, GPS, casual games
22	Toshihiro Osaragi	Estimating Spatio-Temporal Distribution of Railroad Users and Its Application to Disaster Prevention Planning.	AGILE Conf.	2009	DBLP DOI BibTeX RDF	railroad user, spatio-temporal distribution, disaster prevention planning, person trip survey, difficulty returning home
22	Yves Guiard	The problem of consistency in the design of Fitts' law experiments: consider either target distance and width or movement form and scale.	CHI	2009	DBLP DOI BibTeX RDF	movement amplitude, movement difficulty, movement form, movement scale, movement shape, target distance, target tolerance, target width, methodology, theory, Fitts' law, experimental design
22	Kevyn Collins-Thompson, Paul N. Bennett	Estimating query performance using class predictions.	SIGIR	2009	DBLP DOI BibTeX RDF	text classification, query difficulty
22	Enda Ridge, Daniel Kudenko	Determining Whether a Problem Characteristic Affects Heuristic Performance.	Recent Advances in Evolutionary Computation for Combinatorial Optimization	2008	DBLP DOI BibTeX RDF	Nest Hierarchical Design, Design of Experiments, Ant Colony Optimisation, Problem Difficulty
22	Stefano Mizzaro	The Good, the Bad, the Difficult, and the Easy: Something Wrong with Information Retrieval Evaluation?.	ECIR	2008	DBLP DOI BibTeX RDF	topic ease and difficulty, Evaluation, TREC
22	Michael Oehl, Christine Sutter, Martina Ziefle	Considerations on Efficient Touch Interfaces - How Display Size Influences the Performance in an Applied Pointing Task.	HCI (8)	2007	DBLP DOI BibTeX RDF	pointing performance, touch input, small screen device, Task difficulty, display size
22	Christine Sutter, Jochen Müsseler	User Specific Design of Interfaces and Interaction Techniques: What Do Older Computer Users Need?	HCI (5)	2007	DBLP DOI BibTeX RDF	Input Device, Age, Task Type, Task Difficulty, User Characteristics
22	Gennaro Costagliola, Filomena Ferrucci, Vittorio Fuccella	A Web-Based E-Testing System Supporting Test Quality Improvement.	ICWL	2007	DBLP DOI BibTeX RDF	e-Testing, Computer Aided Assessment, CAA, item, item quality, eWorkbook, IRT, Test Analysis, difficulty, multiple choice, distractor, discrimination, online testing, questions, Item Response Theory
22	E. Ke Tang, Ponnuthurai N. Suganthan, Xin Yao 0001	An analysis of diversity measures.	Mach. Learn.	2006	DBLP DOI BibTeX RDF	Margin distribution, Disagreement measure, Double fault measure, KW variance, Interrater agreement, Generalized diversity, Measure of difficulty, Coincident failure diversity, Classifier ensemble, Majority vote, Diversity measures, Entropy measure
22	Tuan Hao Hoang, Nguyen Xuan Hoai, Nguyen Thi Hien, Robert I. McKay, Daryl Essam	ORDERTREE: a new test problem for genetic programming.	GECCO	2006	DBLP DOI BibTeX RDF	benchmark problems, genetic programming, problem difficulty
22	Jason M. Daida	Towards identifying populations that increase the likelihood of success in genetic programming.	GECCO	2005	DBLP DOI BibTeX RDF	binomial-3, GP problem difficulty, building blocks, population dynamics, selection methods, initial populations
22	Jason C. Hung, L. J. Lin, Wen-Chih Chang, Timothy K. Shih, Hui-Huang Hsu, Han-Bin Chang, Hsuan-Pu Chang, Kuan-Hao Huang	A Cognition Assessment Authoring System for E-Learning.	ICDCS Workshops	2004	DBLP DOI BibTeX RDF	Cognition Level, Item Discrimination Index, Item Difficulty Index, Assessment Analysis Model, distance learning
22	Sharon L. Oviatt, Rachel Coulston, Stefanie Tomko, Benfang Xiao, Rebecca Lunsford, R. Matthews Wesson, Lesley Carmichael	Toward a theory of organized multimodal integration patterns during human-computer interaction.	ICMI	2003	DBLP DOI BibTeX RDF	co-timing, entrenchment, multimodal integration, error handling, task difficulty, speech and pen input, Gestalt theory
22	Benfang Xiao, Rebecca Lunsford, Rachel Coulston, R. Matthews Wesson, Sharon L. Oviatt	Modeling multimodal integration patterns and performance in seniors: toward adaptive processing of individual differences.	ICMI	2003	DBLP DOI BibTeX RDF	human performance errors, self-regulatory language, multimodal integration, task difficulty, speech and pen input, senior users
22	Russ Bubley, Martin E. Dyer	Path Coupling: A Technique for Proving Rapid Mixing in Markov Chains.	FOCS	1997	DBLP DOI BibTeX RDF	P-hard counting, path coupling, combinatorial difficulty, hard combinatorial problems, TWICE-SAT, complexity, Markov chains, theorem proving, graph colouring, algorithm design, Markov chain Monte Carlo method, rapid mixing
22	Elias N. Houstis, Anupam Joshi, Mikhail J. Atallah, Sanjiva Weerawarana, Ahmed K. Elmagarmid	Internet, education, and the Web.	WETICE	1996	DBLP DOI BibTeX RDF	Internet-based telelearning, video-based distance learning, Global Information Infrastructure, educational paradigm, self-paced learning, examination-on-demand, programmed educational modules, difficulty level, learning-disabled students, teaching aids, integrated notebook interface, virtual introductory programming course, Internet, World Wide Web, multimedia, adaptivity, interactivity, information technology, information access, information searching
22	Benjamin Watson 0001, Neff Walker, Peter Woytiuk, William Ribarsky	Maintaining Usability During 3D Placement Despite Delay.	VR	2003	DBLP DOI BibTeX RDF
21	Jason Carter, Prasun Dewan	Are you having difficulty?	CSCW	2010	DBLP DOI BibTeX RDF	machine learning, context aware computing, help
21	Jacob Whitehill, Marian Stewart Bartlett, Javier R. Movellan	Measuring the Perceived Difficulty of a Lecture Using Automatic Facial Expression Recognition.	Intelligent Tutoring Systems	2008	DBLP DOI BibTeX RDF
21	Marco Tomassini, Leonardo Vanneschi	Negative Slope Coefficient and the Difficulty of Random 3-SAT Instances.	EvoWorkshops	2008	DBLP DOI BibTeX RDF
21	Irene Cheng 0001, Rui Shen 0002, Anup Basu	An Algorithm for Automatic Difficulty Level Estimation of Multimedia Mathematical Test Items.	ICALT	2008	DBLP DOI BibTeX RDF
21	Jiyin He, Martha A. Larson, Maarten de Rijke	Using Coherence-Based Measures to Predict Query Difficulty.	ECIR	2008	DBLP DOI BibTeX RDF