Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | ACM Digital Library |
|---|---|
| Author | Jeffery, Clinton Mills, Peter |
| Abstract | Goal-directed evaluation is a paradigm that combines the power of generators with backtracking search. In goal-directed evaluation every expression is a generator that produces a sequence of values or fails, and operations search to find successful results over the product space of their operands. Introduced in the influential dynamic language Icon and later refined in its object-oriented descendent Unicon, goal-directed evaluation is difficult to formalize and implement. In particular grafting goal-directed evaluation onto other languages in a manner that provides seamless interoperability has remained an elusive challenge. We present a novel approach to embedding goal-directed evaluation into existing object-oriented languages based on program transformation. We first introduce a form of annotations for multi-language integration, called scoped annotations, that allow mixing in functionality at the level of expressions, methods, or classes. Transformations over the annotated regions then unravel the syntax of generator expressions to a conventional form by flattening nested generators and making iteration explicit in order to enable native evaluation. To demonstrate the utility of the approach, we have implemented the transformations for Java as well as its dynamic analogue Groovy, and housed them in an interpretive harness that realizes both an interactive extension of Groovy as well as a translator of embedded goal-directed evaluation into Java. |
| Starting Page | 1790 |
| Ending Page | 1797 |
| Page Count | 8 |
| File Format | |
| ISBN | 9781450337397 |
| DOI | 10.1145/2851613.2851731 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2016-04-04 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Program transformation Embedding Unicon Generators Icon |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|