1 - 20
Next
- ANNPR (Workshop) (9th : 2020 : Online)
- Cham, Switzerland : Springer, 2020.
- Description
- Book — 1 online resource
- Summary
-
- Deep Learning Methods for Image Guidance in Radiation Therapy Intentional Image Similarity Search.- Sttructured (De)composable Representations Trained with Neural Networks.- Long Distance Relationships without Time Travel: Boosting the Performance of a Sparse Predictive Autoencoder in Sequence Modeling.- Improving Accuracy and Efficiency of Object Detection Algorithms using Multiscale Feature Aggregation Plugins.- Abstract Echo State Networks.- Minimal Complexity Support Vector Machines.- Named Entity Disambiguation at Scale.- Geometric Attention for Prediction of Differential Properties in 3D Point Clouds.- How (Not) to Measure Bias in Face Recognition Networks.-Feature Extraction: A Time Window Analysis based on the X-ITE Pain Database.- Pain Intensity Recognition - An Analysis of Short-Time Sequences in a Real-World Scenario.- A deep learning approach for efficient registration of dual view mammography.- Deep Transfer Learning for Texture Classification in Colorectal Cancer Histology.- Applications of Generative Adversarial Networks to Dermatologic Imaging.- Typing Plasmids with Distributed Sequence Representation.- KP-YOLO: a modification of YOLO algorithm for the keypoint-based detection of QR Codes.- Using Mask R-CNN for Image-Based Wear Classification of Solid Carbide Milling and Drilling Tools.- A Hybrid Deep Learning Approach For Forecasting Air Temperature.- Using CNNs to optimize numerical simulations in geotechnical engineering.- Going for 2D or 3D? Investigating various Machine Learning Approaches for Peach Variety Identification.- A Transfer Learning End-to-End Arabic Text-To-Speech (TTS) Deep Architecture.- ML-Based Trading Models: An investigation during COVID-19 pandemic crisis.- iNNvestigate-GUI - Explaining Neural Networks Through an Interactive Visualization Tool.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- CONVERSATIONS (Workshop) (3rd : 2019 : Amsterdam, Netherlands)
- Cham : Springer, 2020.
- Description
- Book — 1 online resource (xii, 273 pages) : illustrations (some color)
- Summary
-
- Conversational Agents in Healthcare: Using QCA to Explain Patients Resistance to Chatbots for Medication
- An Approach for Ex-Post-Facto Analysis of Knowledge Graph-Driven Chatbots
- the DBpedia Chatbot
- Privacy Concerns in Chatbot Interactions
- Creating Humanlike Chatbots: What Chatbot Developers Could Learn from Webcare Employees in Adopting a Conversational Human Voice
- The Conversational Agent "Emoty" Perceived by People with Neurodevelopmental Disorders: Is It a Human or a Machine
- Gender Bias in Chatbot Design
- Conversational Web Interaction: Proposal of a Dialog-Based Natural Language Interaction Paradigm for the Web
- Designing Chatbots for Guiding Online Peer Support Conversations for Adults with ADHD
- Towards Chatbots to Support Bibliotherapy Preparation and Delivery
- CivicBots
- Chatbots for Supporting Youth in Societal Participation
- Using Theory of Mind to Assess Users Sense of Agency in Social Chatbots
- Exploring Age Differences in Motivations for and Acceptance of Chatbot Communication in a Customer Service Context
- Improving Conversations: Lessons Learnt from Manual Analysis of Chatbot Dialogues
- Conversational Repair in Chatbots for Customer Service: The Effect of Expressing Uncertainty and Suggesting Alternatives
- Working Together with Conversational Agents: The Relationship of Perceived Cooperation with Service Performance Evaluation
- Chatbots for the Information Acquisition at Universities
- A Students View on the Application Area
- A Configurable Agent to Advance Peers Productive Dialogue in MOOCs
- Small Talk Conversations and the Long-Term Use of Chatbots in Educational Settings
- Experiences from a Field Study.
- International Conference on Embedded Systems and Artifical Intelligence (1st : 2019 : Fez, Morocco)
- Singapore : Springer, 2020.
- Description
- Book — 1 online resource (879 pages)
- Summary
-
- Real time Implementation of Articial Neural Network in FPGA Platform.- Design of a 0,18um CMOS Inductor - based Bandpass Microwave Active Filter.- Improvement of the Authentication on in-Vehicle Controller Area Networks.- Comparative Evaluation of Speech Recognition systems Based on Different Toolkits.- Stability Analysis and H Performance for Nonlinear Fuzzy Networked Control Systems with Time-Varying Delay.- Driver Behavior assistance in Road Intersections.- Performance of CE-OFDM System over AWGN and Frequency-Selective Channels.- Towards a Dynamical Adaptive Finite Volume Core for Urban Flow Simulations.- An Efficiency Study of Adaptive Median Filtering for Image Denoising, Based on A Hardware Implementation.- Processing Time and Computing Resources Optimization in a Mobile Edge Computing Node.- Viscous Dissipation and Heat Source/Sink Effects on Convection Heat Transfer in a Saturated Porous Medium.- Fast and Efficient Decoding Algorithm Developed From Concatenation between A Symbol-By-Symbol Decoder and A Decoder Based On Syndrome Computing and Hash Techniques.- SWIMAC: An Ultra-Low Power Consumption MAC Protocol for IR-UWB based WSN.- An Optimal Design of a Short-Channel RF Low Noise Amplifier Using a Swarm Intelligence Techniques.
- (source: Nielsen Book Data)
- 4 Conclusion
- References
- Design of a 0.18 μm CMOS Inductor-Based Bandpass Microwave Active Filter
- 1 Introduction
- 2 Synthesis of a Grounded CMOS Active Inductor
- 3 Procedure of Designing Chebyshev Microwave Bandpass Filters
- 4 Example of a Third-Order Chebyshev Bandpass Filter
- 5 Conclusion
- References
- Improvement of the Authentication on In-Vehicle Controller Area Networks
- 1 Introduction
- 2 Development of an Authentication Method
- 2.1 Principles
- 2.2 Current Technique
- 2.3 Proposed Improvements
- 3 Hash Algorithm
- 4 Conclusion
- References
(source: Nielsen Book Data)
- International Conference on Futuristic Trends in Network and Communication Technologies (2nd : 2019 : Chandigarh, India)
- Singapore : Springer, 2020.
- Description
- Book — 1 online resource (xv, 710 pages) : illustrations (some color)
- Summary
-
- Network and Computing Technologies
- Wireless Networks and Internet of Things (IoT)
- Futuristic Computing Technologies
- Communication Technologies, Security and Privacy.
- Shi, Yuanming.
- Singapore : Springer, 2020.
- Description
- Book — 1 online resource (164 pages)
- Summary
-
- Chapter 1. Introduction.-
- Chapter 2. Sparse Linear Model.-
- Chapter 3. Blind Demixing.-
- Chapter 4. Sparse Blind Demixing.-
- Chapter 5. Shuffled Linear Regression.-
- Chapter 6. Learning Augmented Methods.-
- Chapter 7. Conclusions and Discussions.-
- Chapter 8. Appendix. .
- (source: Nielsen Book Data)
- 4.5.1 Optimization on Product Manifolds
- 4.5.2 Smoothed Riemannian Optimization
- 4.5.3 Simulation Results
- 4.6 Summary
- References
- 5 Shuffled Linear Regression
- 5.1 Joint Data Decoding and Device Identification
- 5.2 Problem Formulation
- 5.3 Maximum Likelihood Estimation Based Approaches
- 5.3.1 Sorting Based Algorithms
- 5.3.2 Approximation Algorithm
- 5.4 Algebraic-Geometric Approach
- 5.4.1 Eliminating Π via Symmetric Polynomials
- 5.4.2 Theoretical Analysis
- 5.4.2.1 Exact Data
- 5.4.2.2 Corrupted Data
- 5.4.3 Algebraically Initialized Expectation-Maximization
(source: Nielsen Book Data)
- Mexican Conference on Pattern Recognition (12th : 2020 : Online)
- Cham : Springer, 2020.
- Description
- Book — 1 online resource Digital: text file.PDF.
- Summary
-
- Pattern Recognition Techniques.- Image Processing and Analysis.- Computer Vision.- Industrial and Medical Applications of Pattern Recognition.- Natural Language Processing and Recognition.- Artificial Intelligence Techniques and Recognition.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- Web Information Systems and Applications Conference (17th : 2020 : Guangzhou, China)
- Cham, Switzerland : Springer, [2020]
- Description
- Book — 1 online resource
- Summary
-
- World Wide Web.- Recommendation.- Query Processing and Algorithm.- Natural Language Processing.- Machine Learning.- Graph Query.- Edge Computing and Data Mining.- Data Privacy and Security.- Blockchain.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- ANNPR (Workshop) (8th : 2018 : Siena, Italy)
- Cham : Springer, 2018.
- Description
- Book — 1 online resource (xi, 408 pages) : illustrations. Digital: text file; PDF.
- Summary
-
- Intro
- Preface
- Organization
- Contents
- Invited Papers
- What's Wrong with Computer Vision?
- 1 Introduction
- 2 Top Ten Questions a Theory on Vision Should Address
- 3 Hierarchical Description of Visual Tasks
- 3.1 Pixel-Wise and Abstract Visual Interpretations
- 3.2 The Interwound Story of Vision and Language
- 3.3 When Vision Collapses to Classification
- 4 Conclusions
- References
- Deep Learning in the Wild
- 1 Introduction
- 2 Face Matching
- 3 Print Media Monitoring
- 4 Visual Quality Control
- 5 Music Scanning
- 6 Game Playing
- 7 Automated Machine Learning
- 8 Conclusions
- References
- Learning Algorithms and Architectures
- Effect of Equality Constraints to Unconstrained Large Margin Distribution Machines
- 1 Introduction
- 2 Least Squares Support Vector Machines
- 3 Large Margin Distribution Machines and Their Variants
- 3.1 Large Margin Distribution Machines
- 3.2 Least Squares Large Margin Distribution Machines
- 3.3 Unconstrained Large Margin Distribution Machines
- 4 Performance Evaluation
- 4.1 Conditions for Experiment
- 4.2 Results for Two-Class Problems
- 5 Conclusions
- References
- DLL: A Fast Deep Neural Network Library
- 1 Introduction
- 2 DLL: Deep Learning Library
- 2.1 Performance
- 2.2 Example
- 3 Experimental Evaluation
- 4 MNIST
- 4.1 Fully-Connected Neural Network
- 4.2 Convolutional Neural Network
- 5 CIFAR-10
- 6 ImageNet
- 7 Conclusion and Future Work
- References
- Selecting Features from Foreign Classes
- 1 Introduction
- 2 Methods
- 2.1 Learning from Context Classes
- 2.2 Foreign Class Combinations
- 3 Experiments
- 3.1 Datasets
- 4 Results
- 5 Discussion and Conclusion
- References
- A Refinement Algorithm for Deep Learning via Error-Driven Propagation of Target Outputs
- 1 Introduction
- 2 Error-Driven Target Propagation: Formalization of the Algorithms
- 2.1 The Inversion Net
- 2.2 Refinement of Deep Learning via Target Propagation
- 3 Experiments
- 4 Conclusions
- References
- Combining Deep Learning and Symbolic Processing for Extracting Knowledge from Raw Text
- 1 Introduction
- 2 Model
- 2.1 Semantic Features
- 2.2 Logic Constraints
- 2.3 Segmentation
- 3 Experiments
- 4 Conclusions
- References
- SeNA-CNN: Overcoming Catastrophic Forgetting in Convolutional Neural Networks by Selective Network Augmentation
- 1 Introduction
- 2 Related Work
- 3 Proposed Method
- 4 Experiments
- 4.1 Network Architecture
- 4.2 Training Methodology
- 4.3 Isolated Learning
- 4.4 Adding New Tasks to the Models
- 4.5 Three Tasks Scenario
- 5 Conclusion
- References
- Classification Uncertainty of Deep Neural Networks Based on Gradient Information
- 1 Introduction
- 2 Entropy, Softmax Baseline and Gradient Metrics
- 3 Meta Classification
- A Benchmark Between Maximum Softmax Probability and Gradient Metrics
- 4 Recognition of Unlearned Concepts
- 5 Meta Classification with Known Unknowns
- 6 Conclusion and Outlook
- References
(source: Nielsen Book Data)
- Cham, Switzerland : Springer, 2018.
- Description
- Book — 1 online resource (xxi, 174 pages) Digital: text file.PDF.
- Summary
-
- Cyber Physical Systems Security.-Risk Management for CPS Security.-Wireless Sensor Network Security for Cyber Physical Systems.-WSN Security mechanisms for CPS.- ICS/SCADA System Security for CPS.-Embedded Systems Security for Cyber Physical Systems.-Distributed Control Systems Security for CPS.-Standards for CPS.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- Konar, Amit, author.
- Cham, Switzerland : Springer, [2018]
- Description
- Book — 1 online resource (xviii, 276 pages) : illustrations (some color) Digital: text file; PDF.
- Summary
-
- Introduction.- Radon Transform based Automatic Posture Recognition in Ballet Dance.- Fuzzy Image Matching Based Posture Recognition in Ballet Dance.- Gesture Driven Fuzzy Interface System For Car Racing Game.- Type-2 Fuzzy Classifier based Pathological Disorder Recognition.- Probabilistic Neural Network based Dance Gesture Recognition.- Differential Evolution based Dance Composition.- EEG-Gesture based Artificial Limb Movement for Rehabilitative Applications.- Conclusions and Future Directions.- Index.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- IDCS (Conference) (11th : 2018 : Tokyo, Japan)
- Cham, Switzerland : Springer, 2018.
- Description
- Book — 1 online resource (xi, 304 pages) : illustrations Digital: text file; PDF.
- Summary
-
This book constitutes the proceedings of the 11th International Conference on Internet and Distributed Computing Systems, IDCS 2018, held in Tokyo, Japan, in October 2018. The 21 full papers presented together with 5 poster and 2 short papers in this volume were carefully reviewed and selected from 40 submissions. This conference desired to look for inspiration in diverse areas (e.g., infrastructure and system design, software development, big data, control theory, artificial intelligence, IoT, self-adaptation, emerging models, paradigms, applications and technologies related to Internet-based distributed systems) to develop new ways to design and mange such complex and adaptive computation resources. .
(source: Nielsen Book Data)
- INSCI (Conference) (5th : 2018 : Saint Petersburg, Russia)
- Cham, Switzerland : Springer, 2018.
- Description
- Book — 1 online resource (xiii, 313 pages) : illustrations. Digital: text file; PDF.
- Summary
-
- Risks on the Internet: Detecting Harmful Content and Discussing Regulation.- Methodologies for Studies of Online Audiences.- Online Media and Public Issues.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- INSCI (Conference) (4th : 2017 : Thessalonikē, Greece)
- Cham, Switzerland : Springer, 2018.
- Description
- Book — 1 online resource (viii, 249 pages) : illustrations Digital: text file.PDF.
- Summary
-
- Awareness Platform.- Aalto Observatory on Digital Valuation Systems.- A Novel Lexicon-Based Approach in Determining Sentiment in Financial Data Using Learning Automata.- A Hybrid Recommendation System Based on Density-Based Clustering.- Computing Platform for Virtual Economic Activities Index.- Data Based Stock Portfolio Construction Using Computational Intelligence.- YourDataStories: Transparency and Corruption Fighting Through Data Interlinking and Visual Exploration.- The Maker Movement and the Disruption of the Producer-Consumer Relation.- Open Data: Creating Communities and Practices for a New Common.- The Case for Collaborative Policy Experimentation Using Advanced Geospatial Data Analytics and Visualisation.- An Engagement-Related Behaviour Change Approach for SavingFood in Greece.- Developing a Social Innovation Methodology in the Web 2.0 Era.- Code Hunting Games: a Mixed Reality Multiplayer Treasure Hunt Through a Conversational Interface.- Politician - an Imitation Game.- Towards Open Domain Chatbots - a GRU Architecture for Data Driven Conversations.- Creating Dialogues Using Argumentation and Social Practices.- An Overview of Open-Source Chatbots Social Skills.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- LVA/ICA (Conference) (14th : 2018 : Guildford, England), author.
- Cham, Switzerland : Springer, [2018]
- Description
- Book — 1 online resource Digital: text file; PDF.
- Summary
-
- Structured Tensor Decompositions and Applications.- Matrix and Tensor Factorizations.- ICA Methods.- Nonlinear Mixtures.- Audio Data and Methods.- Signal Separation Evaluation Campaign.- Deep Learning and Data-driven Methods.- Advances in Phase Retrieval and Applications.- Sparsity-Related Methods.- Biomedical Data and Methods.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- GI/ITG Conference on Measuring, Modelling, and Evaluating Computing, and Communication Systems (19th : 2018 : Erlangen, Germany)
- Cham, Switzerland : Springer, 2018.
- Description
- Book — 1 online resource (xix, 344 pages) : illustrations Digital: text file.PDF.
- Summary
-
- Full Papers.- Time-Based Maintenance Models under Uncertainty.- Markov Automata on Discount.- Markov Analysis for Optimum Caching as an Alternative to Belady's Algorithm.- Intrusion Detection for Sequence-based Attacks with Reduced Traffic Models.- Hidden Storage in Data Centers: Gaining Flexibility Through Cooling Systems.- Performance Benchmarking of Network Function Chain Placement Algorithms.- Towards Optimal Placement of Monitoring Units in Time-varying Networks under Centralized Control.- Estimating the Flow Rule Installation Time of SDN Switches when Facing Control Plane Delay.- Dynamic Control of Running Servers.- On the Value of Service Demand Estimation for Auto-Scaling.- Evaluating a Single-Server Queue with Asynchronous Speed Scaling.- Active Queue Management Based on Congestion Policing (CP-AQM).- Deficit Round Robin with Limited Deficit Savings (DRR-LDS) for Fairness among TCP Users.- Modeling the Performance of ARQ Error Control in an LTE Transmission System.- Catching Corner Cases in Network Calculus { Flow Segregation Can Improve Accuracy.- QoE Analysis of the Setup of Different Internet Services for FIFO Server Systems.- Industrial, Practical Experience and PhD Track Papers.- VirtuWind - An SDN- and NFV-based Architecture for Softwarized Industrial Networks.- A Modular Environment to Test SCADA Solutions for Wind Parks.- Evaluation of Single-Hop Beaconing with Congestion Control in IEEE WAVE and ETSI ITS-G5.- Practical QoE Evaluation of Adaptive Video Streaming.- Tool Papers.- A Domain-Specific Language and Toolchain for Performance Evaluation based on Measurements.- SLA Tool.- A Tool for Generating Automata of IEC60870-5-104 Implementations.- A Software Tool for the Compact Solution of the Chemical Master Equation.- Logical PetriNet - A Tool to Model Digital Circuit Petri Nets and Transform them into Digital Circuits.- ClassCast: A Tool for Class-Based Forecasting.- Collider - Parallel Experiments in Silico.- FunSpec4DTMC { A Tool for Modelling Discrete-Time Markov Chains Using Functional Specifications.- Model-based System Design and Evaluation of Image Processing Architectures with SimTAny Framework.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
16. Measuring and analysing the use of ontologies : a semantic framework for measuring ontology usage [2018]
- Ashraf, Jamshaid, author.
- Cham, Switzerland : Springer, [2018]
- Description
- Book — 1 online resource (XXIX, 288 pages) : 107 illustrations, 88 illustrations in color Digital: text file; PDF.
- Summary
-
- Motivation.- Closing the Loop: Placing Ontology Usage Analysis in the Ontology Development and Deployment Lifecycle.- Ontology Usage Analysis Framework (OUSAF).- Identification Phase : Ontology Usage Network Analysis Framework (OUN-AF).- Investigation Phase: Empirical Analysis of Domain Ontology Usage (EMP-AF).
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- International Conference on Cooperative Information Systems (26th : 2018 : Valletta, Malta)
- Cham : Springer, 2018.
- Description
- Book — 1 online resource (xxx, 605 pages) : illustrations Digital: text file.PDF.
- Summary
-
- Information Systems Applications (incl.
- Internet).- Information Storage and Retrieval.- Software Engineering Artificial Intelligence (incl. Robotics).- Systems and Data Security.- Computer Appl. in Administrative Data
- Processing Ontologies.- Databases.- Semantics.- Cooperative Information Systems.-Cloud Computing.- Trust, Security, Privacy And Risk
- Management.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- Mexican Conference on Pattern Recognition (10th : 2018 : Puebla, Mexico)
- Cham, Switzerland : Springer, 2018.
- Description
- Book — 1 online resource (xi, 288 pages) : illustrations Digital: text file.PDF.
- Summary
-
- Pattern Recognition Principles.- Patterns of Go gaming by Ising model.- A Novel Criterion to Obtain the Best Feature Subset from Filter Ranking Methods.- Class-specific Reducts vs. Classic Reducts in a Rule-based Classifier: A Case Study.- On the Construction of a Specific Algebra for Composing Tonal Counterpoint.- The Impact of Basic Matrix Dimension on the Performance of Algorithms for Computing Typical Testors.- Fast Convex Hull by a Geometric Approach.- An Experimental Study on Ant Colony Optimization Hyper-heuristics for Solving the Knapsack Problem.- A Linear Time Algorithm for Computing #2SAT for Outerplanar 2-CNF Formulas.- Improving the List of Clustered Permutation on Metric Spaces for Similarity Searching on Secondary Memory.- Modelling 3-Coloring of Polygonal Trees via Incremental Satisfiability.- Deep Learning, Neural Networks and Associative Memories.- Performance Analysis of Deep Neural Networks for Classification of Gene-Expression Microarrays.- Extreme Points of Convex Polytopes Derived from Lattice Autoassociative Memories.- A Comparison of Deep Neural Network Algorithms for Recognition of EEG Motor Imagery Signals.- Learning Word and Sentence Embeddings using a Generative Convolutional Network.- Dense Captioning of Natural Scenes in Spanish.- Automated Detection of Hummingbirds in Images: a Deep Learning Approach.- Data Mining.- Patterns in Poor Learning Engagement in Students While They are Solving Mathematics Exercises in an Affective Tutoring System Related to Frustration.- Pattern Discovery in Mixed Data Bases.- Image Clustering based on Frequent Approximate Subgraph Mining.- Validation of Semantic Relation of Synonymy in Domain Ontologies using Lexico-Syntactic Patterns and Acronyms.- Computer Vision.- Scene Text Segmentation Based on Local Image Phase Information and MSER Method.- A Lightweight Library for Augmented Reality Applications.- Point Set Matching with Order Type.- Including Foreground and Background Information in Maya Hieroglyph Representation.- A Fast Algorithm for Robot Localization using Multiple Sensing Units.- Improving Breast Mass Classification through Kernel Methods and the Fusion of Clinical Data and Image Descriptors.- An Improved Stroke Width Transform to Detect Race Bib Numbers.- Scaled CCR Histogram for Scale-invariant Texture Classification.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- PRCV (Conference) (1st : 2018 : Guangzhou, China)
- Cham : Springer, 2018.
- Description
- Book — 1 online resource (xvii, 589 pages) : illustrations (some color) Digital: text file.PDF.
- Summary
-
- Biometrics.- Computer Vision Application.- Deep Learning.- Document Analysis.- Face Recognition and Analysis.- Feature Extraction and Selection.- Machine Learning.- Object Detection and Tracking.- Performance Evaluation and Database.- Remote Sensing.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
- PRCV (Conference) (1st : 2018 : Guangzhou, China)
- Cham, Switzerland : Springer, 2018.
- Description
- Book — 1 online resource (xvi, 518 pages) : illustrations (some color) Digital: text file.PDF.
- Summary
-
- Biometrics.- Computer Vision Application.- Deep Learning.- Document Analysis.- Face Recognition and Analysis.- Feature Extraction and Selection.- Machine Learning.- Object Detection and Tracking.- Performance Evaluation and Database.- Remote Sensing.
- (source: Nielsen Book Data)
(source: Nielsen Book Data)
Articles+
Journal articles, e-books, & other e-resources
Guides
Course- and topic-based guides to collections, tools, and services.