Discrete-time signal processing
Discrete-time signal processing
Floating search methods in feature selection
Pattern Recognition Letters
Analysis, interpretation and synthesis of facial expressions
Analysis, interpretation and synthesis of facial expressions
Recognizing Human Facial Expressions From Long Image Sequences Using Optical Flow
IEEE Transactions on Pattern Analysis and Machine Intelligence
Feature Selection: Evaluation, Application, and Small Sample Performance
IEEE Transactions on Pattern Analysis and Machine Intelligence
Affective computing
IEEE Transactions on Pattern Analysis and Machine Intelligence
Multimodal Human Emotion/Expression Recognition
FG '98 Proceedings of the 3rd. International Conference on Face & Gesture Recognition
Wearable and automotive systems for affect recognition from physiology
Wearable and automotive systems for affect recognition from physiology
Analysis of scene context related with emotional events
Proceedings of the tenth ACM international conference on Multimedia
Multimodal affective driver interfaces for future cars
Proceedings of the tenth ACM international conference on Multimedia
Pseudo-entropy Similarity for Human Biometrics
ECCV '02 Proceedings of the International ECCV 2002 Workshop Copenhagen on Biometric Authentication
Emotion in human-computer interaction
The human-computer interaction handbook
Using TouchPad Pressure to Detect Negative Affect
ICMI '02 Proceedings of the 4th IEEE International Conference on Multimodal Interfaces
To feel or not to feel: the role of affect in human-computer interaction
International Journal of Human-Computer Studies - Application of affective computing in humanComputer interaction
Affective computing: challenges
International Journal of Human-Computer Studies - Application of affective computing in humanComputer interaction
Developing multimodal intelligent affective interfaces for tele-home health care
International Journal of Human-Computer Studies - Application of affective computing in humanComputer interaction
Proceedings of the 9th international conference on Intelligent user interfaces
Using mental load for managing interruptions in physiologically attentive user interfaces
CHI '04 Extended Abstracts on Human Factors in Computing Systems
Emotions and heart rate while sitting on a chair
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Faces of emotion in human-computer interaction
CHI '05 Extended Abstracts on Human Factors in Computing Systems
Face and body gesture recognition for a vision-based multimodal analyzer
VIP '05 Proceedings of the Pan-Sydney area workshop on Visual information processing
Challenges and Opportunities of Context-Aware Information Access
UDM '05 Proceedings of the International Workshop on Ubiquitous Data Management
Affective multimodal human-computer interaction
Proceedings of the 13th annual ACM international conference on Multimedia
Multimodal affect recognition in learning environments
Proceedings of the 13th annual ACM international conference on Multimedia
Towards mood-oriented interfaces for synchronous interaction
CLIHC '05 Proceedings of the 2005 Latin American conference on Human-computer interaction
Creating a network of Integral Music Controllers
NIME '06 Proceedings of the 2006 conference on New interfaces for musical expression
2005 Special Issue: Beyond emotion archetypes: Databases for emotion modelling using neural networks
Neural Networks - Special issue: Emotion and brain
Toward a decision-theoretic framework for affect recognition and user assistance
International Journal of Human-Computer Studies - Human-computer interaction research in the managemant information systems discipline
Emotion recognition from text using semantic labels and separable mixture models
ACM Transactions on Asian Language Information Processing (TALIP)
Modeling naturalistic affective states via facial and vocal expressions recognition
Proceedings of the 8th international conference on Multimodal interfaces
International Journal of Human-Computer Studies
A user-independent real-time emotion recognition system for software agents in domestic environments
Engineering Applications of Artificial Intelligence
Pre-collision safety strategies for human-robot interaction
Autonomous Robots
Let's get emotional: emotion research in human computer interaction
CHI '07 Extended Abstracts on Human Factors in Computing Systems
A BDI approach to infer student's emotions in an intelligent learning environment
Computers & Education
Observer annotation of affective display and evaluation of expressivity: face vs. face-and-body
VisHCI '06 Proceedings of the HCSNet workshop on Use of vision in human-computer interaction - Volume 56
Anxiety-based affective communication for implicit human-machine interaction
Advanced Engineering Informatics
Multimodal human-computer interaction: A survey
Computer Vision and Image Understanding
Using noninvasive wearable computers to recognize human emotions from physiological signals
EURASIP Journal on Applied Signal Processing
Inferring facial expressions from videos: Tool and application
Image Communication
Biometric valence and arousal recognition
OZCHI '07 Proceedings of the 19th Australasian conference on Computer-Human Interaction: Entertaining User Interfaces
EURASIP Journal on Advances in Signal Processing
Ontology Based Affective Context Representation
EATIS '07 Proceedings of the 2007 Euro American conference on Telematics and information systems
Recognizing the effects of voluntary facial activations using heart rate patterns
ICCOMP'07 Proceedings of the 11th WSEAS International Conference on Computers
Using multiple data sources to get closer insights into user cost and task performance
Interacting with Computers
Affective e-Learning in residential and pervasive computing environments
Information Systems Frontiers
International Journal of Human-Computer Studies
Entertainment modeling through physiology in physical play
International Journal of Human-Computer Studies
A novel device for recognition of human physiological state
ELECTROSCIENCE'08 Proceedings of the 6th WSEAS International Conference on Applied Electromagnetics, Wireless and Optical
Emotions in Speech: Juristic Implications
Speaker Classification I
A User Independent, Biosignal Based, Emotion Recognition Method
UM '07 Proceedings of the 11th international conference on User Modeling
A User Model of Psycho-physiological Measure of Emotion
UM '07 Proceedings of the 11th international conference on User Modeling
Inducing User Affect Recognition Models for Task-Oriented Environments
UM '07 Proceedings of the 11th international conference on User Modeling
Does Body Movement Engage You More in Digital Game Play? and Why?
ACII '07 Proceedings of the 2nd international conference on Affective Computing and Intelligent Interaction
Entertainment Modeling in Physical Play Through Physiology Beyond Heart-Rate
ACII '07 Proceedings of the 2nd international conference on Affective Computing and Intelligent Interaction
Facial Activation Control Effect (FACE)
ACII '07 Proceedings of the 2nd international conference on Affective Computing and Intelligent Interaction
Towards Knowledge-Based Affective Interaction: Situational Interpretation of Affect
ACII '07 Proceedings of the 2nd international conference on Affective Computing and Intelligent Interaction
Emotion Recognition through Multiple Modalities: Face, Body Gesture, Speech
Affect and Emotion in Human-Computer Interaction
Mood and Recommendations: On Non-cognitive Mood Inducers for High Quality Recommendation
APCHI '08 Proceedings of the 8th Asia-Pacific conference on Computer-Human Interaction
Dynamic Game Balancing by Recognizing Affect
Proceedings of the 2nd International Conference on Fun and Games
A Data Driven Emotion Recognition Method Based on Rough Set Theory
RSCTC '08 Proceedings of the 6th International Conference on Rough Sets and Current Trends in Computing
Creating an Emotionally Adaptive Game
ICEC '08 Proceedings of the 7th International Conference on Entertainment Computing
Design of Experience and Flow in Movement-Based Interaction
Motion in Games
Dynamic vs. Static Recognition of Facial Expressions
AmI '08 Proceedings of the European Conference on Ambient Intelligence
A Simple Model for Human-Robot Emotional Interaction
KES '07 Knowledge-Based Intelligent Information and Engineering Systems and the XVII Italian Workshop on Neural Networks on Proceedings of the 11th International Conference
Multidimensional Emotional Appraisal Semantic Space (MEAS): Evaluating HM Affective Interactions
KES '07 Knowledge-Based Intelligent Information and Engineering Systems and the XVII Italian Workshop on Neural Networks on Proceedings of the 11th International Conference
Segmentation and Tracking for Vision Based Human Robot Interaction
WI-IAT '08 Proceedings of the 2008 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology - Volume 03
Automatic Detection of Learner's Affect From Gross Body Language
Applied Artificial Intelligence
Fundamentals of physiological computing
Interacting with Computers
Ontology-Based Context Modeling and Reasoning for U-HealthCare
IEICE - Transactions on Information and Systems
Facial Expression Generation from Speaker's Emotional States in Daily Conversation
IEICE - Transactions on Information and Systems
BCS-HCI '07 Proceedings of the 21st British HCI Group Annual Conference on People and Computers: HCI...but not as we know it - Volume 2
Emotion in HCI: designing for people
BCS-HCI '08 Proceedings of the 22nd British HCI Group Annual Conference on People and Computers: Culture, Creativity, Interaction - Volume 2
Short-term emotion assessment in a recall paradigm
International Journal of Human-Computer Studies
A non-rigid motion estimation algorithm for yawn detection in human drivers
International Journal of Computational Vision and Robotics
ROCOM'09 Proceedings of the 9th WSEAS international conference on Robotics, control and manufacturing technology
Mind and Body: Dialogue and Posture for Affect Detection in Learning Environments
Proceedings of the 2007 conference on Artificial Intelligence in Education: Building Technology Rich Learning Contexts That Work
An Emotion Recognition System Based on Rough Set Theory
Proceedings of the 2006 conference on Advances in Intelligent IT: Active Media Technology 2006
Empirically building and evaluating a probabilistic model of user affect
User Modeling and User-Adapted Interaction
An Agent Model of Temporal Dynamics in Relapse and Recurrence in Depression
IEA/AIE '09 Proceedings of the 22nd International Conference on Industrial, Engineering and Other Applications of Applied Intelligent Systems: Next-Generation Applied Intelligence
An Integrated Approach to Emotion Recognition for Advanced Emotional Intelligence
Proceedings of the 13th International Conference on Human-Computer Interaction. Part III: Ubiquitous and Intelligent Interaction
Optimal Affective Conditions for Subconscious Learning in a 3D Intelligent Tutoring System
Proceedings of the 13th International Conference on Human-Computer Interaction. Part IV: Interacting in Various Application Domains
Prediction of solar conditions by emotional learning
Intelligent Data Analysis
UAHCI '09 Proceedings of the 5th International Conference on Universal Access in Human-Computer Interaction. Addressing Diversity. Part I: Held as Part of HCI International 2009
Potential and Challenges of Body Area Networks for Affective Human Computer Interaction
FAC '09 Proceedings of the 5th International Conference on Foundations of Augmented Cognition. Neuroergonomics and Operational Neuroscience: Held as Part of HCI International 2009
INTERACT '09 Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction: Part II
A service platform design for affective lighting system based on user emotions
WSEAS Transactions on Information Science and Applications
Learning from preferences and selected multimodal features of players
Proceedings of the 2009 international conference on Multimodal interfaces
Emotion recognition from facial expressions and its control using fuzzy logic
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Video digest based on heart rate
VIIP '07 The Seventh IASTED International Conference on Visualization, Imaging and Image Processing
IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
Emotion recognition with consideration of facial expression and physiological signals
CIBCB'09 Proceedings of the 6th Annual IEEE conference on Computational Intelligence in Bioinformatics and Computational Biology
Study on the change of physiological signals during playing body-controlled games
Proceedings of the International Conference on Advances in Computer Enterntainment Technology
Classification of EEG for Affect Recognition: An Adaptive Approach
AI '09 Proceedings of the 22nd Australasian Joint Conference on Advances in Artificial Intelligence
AI '09 Proceedings of the 22nd Australasian Joint Conference on Advances in Artificial Intelligence
Normalizing multi-subject variation for drivers' emotion recognition
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
CCDC'09 Proceedings of the 21st annual international conference on Chinese control and decision conference
Preference learning for cognitive modeling: a case study on entertainment preferences
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
International Journal of Biometrics
IROS'09 Proceedings of the 2009 IEEE/RSJ international conference on Intelligent robots and systems
An integrative ambient agent model for unipolar depression relapse prevention
Journal of Ambient Intelligence and Smart Environments
A driver fatigue recognition model based on information fusion and dynamic Bayesian network
Information Sciences: an International Journal
The influence of implicit and explicit biofeedback in first-person shooter games
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
An emotional recognition architecture based on human brain structure
ICANN/ICONIP'03 Proceedings of the 2003 joint international conference on Artificial neural networks and neural information processing
On assisting a visual-facial affect recognition system with keyboard-stroke pattern information
Knowledge-Based Systems
Efficient facial expression recognition for human robot interaction
IWANN'07 Proceedings of the 9th international work conference on Artificial neural networks
Towards detecting cognitive load and emotions in usability studies using the realEYES framework
UI-HCII'07 Proceedings of the 2nd international conference on Usability and internationalization
A conceptual framework of affective context-aware interactive learning media
Edutainment'07 Proceedings of the 2nd international conference on Technologies for e-learning and digital entertainment
Feature selection in audiovisual emotion recognition based on rough set theory
Transactions on rough sets VII
Towards a physiological model of user interruptability
INTERACT'07 Proceedings of the 11th IFIP TC 13 international conference on Human-computer interaction - Volume Part II
Display characteristics affect users' emotional arousal in 3D games
ERCIM'06 Proceedings of the 9th conference on User interfaces for all
A GMM based 2-stage architecture for multi-subject emotion recognition using physiological responses
Proceedings of the 1st Augmented Human International Conference
The role of user mood in movie recommendations
Expert Systems with Applications: An International Journal
An experimental study on electrocardiography toward emotion recognition
FSKD'09 Proceedings of the 6th international conference on Fuzzy systems and knowledge discovery - Volume 1
Remarks on emotion recognition from breath gas information
ROBIO'09 Proceedings of the 2009 international conference on Robotics and biomimetics
Mining physiological conditions from heart rate variability analysis
IEEE Computational Intelligence Magazine
User Modeling and User-Adapted Interaction
IEEE Transactions on Information Technology in Biomedicine - Special section on new and emerging technologies in bioinformatics and bioengineering
Automatic inference of complex affective states
Computer Speech and Language
Affectively intelligent and adaptive car interfaces
Information Sciences: an International Journal
Proceedings of the 3rd International Conference on PErvasive Technologies Related to Assistive Environments
Affect- and behaviour-related assistance for families in the home environment
Proceedings of the 3rd International Conference on PErvasive Technologies Related to Assistive Environments
Applications of sensing platforms with wearable computers
Proceedings of the 3rd International Conference on PErvasive Technologies Related to Assistive Environments
EEG: pattern classification during emotional picture processing
Proceedings of the 3rd International Conference on PErvasive Technologies Related to Assistive Environments
Individual emotional profiles in Wizard-of-Oz-experiments
Proceedings of the 3rd International Conference on PErvasive Technologies Related to Assistive Environments
Unobtrusive physiological monitoring in an airplane seat
Personal and Ubiquitous Computing
An emotional model for a guide robot
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans - Special issue on model-based diagnostics
Affect-aware behaviour modelling and control inside an intelligent environment
Pervasive and Mobile Computing
Towards affective camera control in games
User Modeling and User-Adapted Interaction
Enjoyment recognition from physiological data in a car racing game
Proceedings of the 3rd international workshop on Affective interaction in natural environments
Genetic search feature selection for affective modeling: a case study on reported preferences
Proceedings of the 3rd international workshop on Affective interaction in natural environments
An experience oriented video digesting method using heart activity and its applicable video types
PCM'10 Proceedings of the 11th Pacific Rim conference on Advances in multimedia information processing: Part I
Emotion recognition from EEG using higher order crossings
IEEE Transactions on Information Technology in Biomedicine - Special section on affective and pervasive computing for healthcare
IEEE Transactions on Information Technology in Biomedicine - Special section on affective and pervasive computing for healthcare
Modeling naturalistic affective states via facial, vocal, and bodily expressions recognition
ICMI'06/IJCAI'07 Proceedings of the ICMI 2006 and IJCAI 2007 international conference on Artifical intelligence for human computing
Music composition based on linguistic approach
MICAI'10 Proceedings of the 9th Mexican international conference on Advances in artificial intelligence: Part I
Fighting coercion attacks in key generation using skin conductance
USENIX Security'10 Proceedings of the 19th USENIX conference on Security
Conference Internationale Francophone sur I'Interaction Homme-Machine
Improving dynamic facial expression recognition with feature subset selection
Pattern Recognition Letters
Subliminal cues while teaching: HCI technique for enhanced learning
Advances in Human-Computer Interaction - Special issue on subliminal communication in human-computer interaction
Now where was I?: physiologically-triggered bookmarking
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Sensing cognitive multitasking for a brain-based adaptive user interface
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Information Processing and Management: an International Journal
Ifelt: accessing movies through our emotions
Proceddings of the 9th international interactive conference on Interactive television
From motion to emotion: a wearable system for the multimedia enrichment of a Butoh dace performance
Journal of Mobile Multimedia
Affect detection from multichannel physiology during learning sessions with AutoTutor
AIED'11 Proceedings of the 15th international conference on Artificial intelligence in education
Driving distraction analysis by ECG signals: an entropy analysis
IDGD'11 Proceedings of the 4th international conference on Internationalization, design and global development
Towards emotional interaction: using movies to automatically learn users' emotional states
INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part I
Affective modeling from multichannel physiology: analysis of day differences
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part I
Being happy, healthy and whole watching movies that affect our emotions
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part I
Generic physiological features as predictors of player experience
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part I
The impact of music on affect during anger inducing drives
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part I
The affective experience of handling digital fabrics: tactile and visual cross-modal effects
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part I
Evaluating a cognitive-based affective student model
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part I
The affective triad: stimuli, questionnaires, and measurements
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part II
Affective preference from physiology in videogames: a lesson learned from the TORCS experiment
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part II
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part II
A game-based corpus for analysing the interplay between game context and player experience
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part II
Generalizing models of student affect in game-based learning environments
ACII'11 Proceedings of the 4th international conference on Affective computing and intelligent interaction - Volume Part II
NOLISP'11 Proceedings of the 5th international conference on Advances in nonlinear speech processing
Portable device for bi-emotional state identification using heart rate variability
UCS'06 Proceedings of the Third international conference on Ubiquitous Computing Systems
Facial expression recognition based on rough set theory and SVM
RSKT'06 Proceedings of the First international conference on Rough Sets and Knowledge Technology
Physiological sensing and feature extraction for emotion recognition by exploiting acupuncture spots
ACII'05 Proceedings of the First international conference on Affective Computing and Intelligent Interaction
A facial expression classification algorithm based on principle component analysis
ISNN'06 Proceedings of the Third international conference on Advnaces in Neural Networks - Volume Part II
Emotion recognition using physiological signals
ICAT'06 Proceedings of the 16th international conference on Advances in Artificial Reality and Tele-Existence
Piecing together the emotion jigsaw
MLMI'04 Proceedings of the First international conference on Machine Learning for Multimodal Interaction
Affect recognition based on physiological changes during the watching of music videos
ACM Transactions on Interactive Intelligent Systems (TiiS) - Special Issue on Affective Interaction in Natural Environments
The impact of system feedback on learners' affective and physiological states
ITS'10 Proceedings of the 10th international conference on Intelligent Tutoring Systems - Volume Part I
Out of the lab and into the fray: towards modeling emotion in everyday life
Pervasive'10 Proceedings of the 8th international conference on Pervasive Computing
Machine Recognition of Music Emotion: A Review
ACM Transactions on Intelligent Systems and Technology (TIST)
Emotion recognition using physiological and speech signal in short-term observation
PIT'06 Proceedings of the 2006 international tutorial and research conference on Perception and Interactive Technologies
Attentiveness detection using continuous restricted boltzmann machine in e-learning environment
ICHL'09 Proceedings of the Second international conference on Hybrid Learning and Education
EEG-based emotion recognition using frequency domain features and support vector machines
ICONIP'11 Proceedings of the 18th international conference on Neural Information Processing - Volume Part I
MovieClouds: content-based overviews and exploratory browsing of movies
Proceedings of the 15th International Academic MindTrek Conference: Envisioning Future Media Environments
Experimental approach to affective interaction in games
Edutainment'06 Proceedings of the First international conference on Technologies for E-Learning and Digital Entertainment
Effects of guided and unguided style learning on user attention in a virtual environment
Edutainment'06 Proceedings of the First international conference on Technologies for E-Learning and Digital Entertainment
ICIC'11 Proceedings of the 7th international conference on Advanced Intelligent Computing
Thin slices of interaction: predicting users' task difficulty within 60 sec.
CHI '12 Extended Abstracts on Human Factors in Computing Systems
Computer Methods and Programs in Biomedicine
Affect prediction from physiological measures via visual stimuli
International Journal of Human-Computer Studies
Computer Animation and Virtual Worlds
Understanding physiological responses to stressors during physical activity
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
Towards the improvement of self-service systems via emotional virtual agents
BCS-HCI '12 Proceedings of the 26th Annual BCS Interaction Specialist Group Conference on People and Computers
Construction of the biocybernetic loop: a case study
Proceedings of the 14th ACM international conference on Multimodal interaction
Playing and cheating in ambient entertainment
ICEC'07 Proceedings of the 6th international conference on Entertainment Computing
Unsupervised inference of auditory attention from biosensors
ECML PKDD'12 Proceedings of the 2012 European conference on Machine Learning and Knowledge Discovery in Databases - Volume Part II
Smart wearable systems: Current status and future challenges
Artificial Intelligence in Medicine
Emotional brain-computer interfaces
International Journal of Autonomous and Adaptive Communications Systems
Valence, arousal and dominance in the EEG during game play
International Journal of Autonomous and Adaptive Communications Systems
Capturing user engagement via psychophysiology: measures and mechanisms for biocybernetic adaptation
International Journal of Autonomous and Adaptive Communications Systems
Ubiquitous emotion-aware computing
Personal and Ubiquitous Computing
A Novel Emotion Recognition Method Based on Ensemble Learning and Rough Set Theory
International Journal of Cognitive Informatics and Natural Intelligence
Image and Vision Computing
Bio-Affective Computer Interface for Game Interaction
International Journal of Gaming and Computer-Mediated Simulations
Subject-dependent biosignal features for increased accuracy in psychological stress detection
International Journal of Human-Computer Studies
Automatic classification of eye activity for cognitive load measurement with emotion interference
Computer Methods and Programs in Biomedicine
Towards an adaptive cultural heritage experience using physiological computing
CHI '13 Extended Abstracts on Human Factors in Computing Systems
Content-based search overviews and exploratory browsing of movies with MovieClouds
International Journal of Advanced Media and Communication
The physiological measurements as a critical indicator in users' experience evaluation
Proceedings of the 17th Panhellenic Conference on Informatics
International Journal of Technology and Human Interaction
UAHCI'13 Proceedings of the 7th international conference on Universal Access in Human-Computer Interaction: user and context diversity - Volume 2
Pervasive and unobtrusive emotion sensing for human mental health
Proceedings of the 7th International Conference on Pervasive Computing Technologies for Healthcare
Affective and cognitive design for mass personalization: status and prospect
Journal of Intelligent Manufacturing
Hi-index | 0.00 |
The ability to recognize emotion is one of the hallmarks of emotional intelligence, an aspect of human intelligence that has been argued to be even more important than mathematical and verbal intelligences. This paper proposes that machine intelligence needs to include emotional intelligence and demonstrates results toward this goal: developing a machine's ability to recognize human affective state given four physiological signals. We describe difficult issues unique to obtaining reliable affective data and collect a large set of data from a subject trying to elicit and experience each of eight emotional states, daily, over multiple weeks. This paper presents and compares multiple algorithms for feature-based recognition of emotional state from this data. We analyze four physiological signals that exhibit problematic day-to-day variations: The features of different emotions on the same day tend to cluster more tightly than do the features of the same emotion on different days. To handle the daily variations, we propose new features and algorithms and compare their performance. We find that the technique of seeding a Fisher Projection with the results of Sequential Floating Forward Search improves the performance of the Fisher Projection and provides the highest recognition rates reported to date for classification of affect from physiology: 81 percent recognition accuracy on eight classes of emotion, including neutral.