11th International Conference on Web Engineering                                   June 20-24 2011, Paphos, Cyprus    Cinz...
UI        b Ma  hAPIss                   s up             e public                                              Active co-...
Consumer Mashups                             Enterprise Mashups                                       Porting of the      ...
• The desire of users to develop their own  things is a driver for the mashup phenomenon -   Mashup developers want to cre...
The need for composing an application, starting from resources responding to personal needs, and simply running it, withou...
Domain specific focus                        • A mashup tool for the construction of                          dashboards  ...
Abstraction from technical details                                     Runtime engine                                     ...
Abstraction from technical details                                                    Component 1                         ...
Continuous feedback                      Intermixing between                      mashup composition                (immed...
Composition support                      • Default bindings                       -   Automatic definition of basic couplin...
Composition support                      • Default bindings                       -   Automatic definition of basic couplin...
Composition support                      • Default bindings                       -   Automatic definition of basic couplin...
Composition support                      • Recommendations based on                       -   syntactic and semantic compa...
• Execution of two tasks with incremental  complexity with a sample of 35 users  with different expertise -   Performance ...
• We have proposed our view over mashup tools  as instruments for End Users Development -   Lightweight development proces...
• We have proposed our view over mashup tools  as instruments for End Users Development -   Lightweight development proces...
DashMash: a Mashup Environment for End User Development
DashMash: a Mashup Environment for End User Development
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DashMash: a Mashup Environment for End User Development

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Web mashups are a new generation of applications based on the “composition” of ready-to-use services. In different contexts, ranging from the consumer Web to Enterprise systems, the potential of this new technology is to make users evolve from passive receivers of applications to actors actively involved in the “creation of innovation”. Enabling end users to self-define applications that satisfy their situational needs is emerging as an important new requirement. In this paper, we address the current lack of lightweight development processes and environments and discuss models, methods, and technologies that can make mashups a technology for end user development.

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DashMash: a Mashup Environment for End User Development

  1. 1. 11th International Conference on Web Engineering June 20-24 2011, Paphos, Cyprus Cinzia CAPPIELLO cappiell@elet.polimi.it Maristella MATERA matera@elet.polimi.it Matteo PICOZZI picozzi@elet.polimi.it Gabriele SPREGA gabriele.sprega@mail.polimi.itDonato BARBAGALLO barbagallo@elet.polimi.itChiara FRANCALANCI francala@elet.polimi.it
  2. 2. UI b Ma hAPIss s up e public Active co- W creation of new ideas, knowledge and simple data sources applications widgets User involvement in the creation of contents En d User D evelop ment Culture of participationWeb Applications Web 2.0
  3. 3. Consumer Mashups Enterprise Mashups Porting of the mashup paradigm to company intranetsDevelopment of online applications starting from contents andfunctionality available on the Web in form of data sources, APIs,reusable services, …
  4. 4. • The desire of users to develop their own things is a driver for the mashup phenomenon - Mashup developers want to create solutions that satisfy their situational needs - Sometimes such solutions can be very effective, and worth to be reused by other users… Mashup platform• User-driven innovation paradigm - Need for innovation toolkits: adequate processes and tools, to let users build their own products and innovate
  5. 5. The need for composing an application, starting from resources responding to personal needs, and simply running it, without worrying about what happens behind the scenes, arises• Abstraction from technical details - A platform speaking the user language (functionality and terminology), possibly through visual mechanisms• Continuous feedback - Immediate visual feedback → immediate mashup execution• Composition support - Assisted composition, e.g., by means of recommendations• Domain specific focus - A platform restricted to a well-defined domain the user is comfortable with
  6. 6. Domain specific focus • A mashup tool for the construction of dashboards • Integration of - company internal services on top of local data warehouses - public APIs - Web resources • Recently specialized for sentiment analysis - Project funded by Milan Municipality on the analyses of the reputation of the Milan city services - Emergent need for the integration of sentiment analysis indicators with relevant external Web resources - We developed domain-specific services for the computation of sentiment indicators and domain-specific rules for their composition
  7. 7. Abstraction from technical details Runtime engine Visual Front End Execution Recommendation Handler Manager Composition Event broker Handler raises events invokes operations Local Data Sources <xpil> <smdl> <uisdl> autonomous ... ... ... communication </xpil> </smdl> </uisdl> Wrappers Web Composition Status Component descriptors descriptors descriptors Composition repository Component registry Remote Component Data Sources Business Logic
  8. 8. Abstraction from technical details Component 1 Component 2 Publisher: Component 1 Event: Event 1 Event 1 Subscriber: Component 3 Operation: Operation 2 Binding <comp> Binding <bind> composition.xml Operation 2 Component 3 Component 5 Component 4
  9. 9. Continuous feedback Intermixing between mashup composition (immediate) execution and execution Automatic generation of the model descriptors Execution Handler Recommendation Manager Composition Event Broker Handler Runtime Engine
  10. 10. Composition support • Default bindings - Automatic definition of basic couplings - Automatic synchronizations based on component classification (domain dependent)
  11. 11. Composition support • Default bindings - Automatic definition of basic couplings - Automatic synchronizations based on component classification (domain dependent)
  12. 12. Composition support • Default bindings - Automatic definition of basic couplings - Automatic synchronizations based on component classification (domain dependent) • Custom bindings - User defined - Additional component synchronizations to accommodate further user needs - Assisted by recommendations
  13. 13. Composition support • Recommendations based on - syntactic and semantic compatibility - quality rankings of components - mashability measure • Additional components and bindings for mashup completion • How to improve quality
  14. 14. • Execution of two tasks with incremental complexity with a sample of 35 users with different expertise - Performance (task completion time) - Ease of use (questionnaire) - Satisfaction (questionnaire) The users felt very All the users were able to => confident about their performance complete both tasks 15% reduction of the mean time No relevant differences of execution between the two between experts and non tasks (a measure of learning?) experts
  15. 15. • We have proposed our view over mashup tools as instruments for End Users Development - Lightweight development processes - Intelligible concepts - High degree of assistance• There are still some open issues: - Easy-to-create components - Effectiveness of mechanisms assisting composition: quality-based, task-based, wisdom of the mass… what else? - Quality of both components and the overall mashups - Interoperability - Not only for dashboards: a Platform for End User Development Of Mashups (PEUDOM)
  16. 16. • We have proposed our view over mashup tools as instruments for End Users Development - Lightweight development processes - Intelligible concepts - High degree of assistance• There are still some open issues: - Easy-to-create components - Effectiveness of mechanisms assisting composition: quality-based, task-based, wisdom of the mass… what else? - Quality of both components and the overall mashups - Interoperability - Not only for dashboards: a Platform for End User Development Of Mashups (PEUDOM)
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