Data provenance in e learning

Current approaches to this include Prober, which seeks to find the minimal set of inputs that can produce a specified output for a black-box operator by replaying the data-flow several times to deduce the minimal set, [31] and dynamic slicing, as used by Zhang et al.

The rows are the associations themselves and columns represent inputs and outputs. In older work, often undertaken by amateurs, only the general site or approximate area may be known, especially when an artifact was found outside a professional excavation and its specific position not recorded.

Further research is often required to establish the true provenance of a find, and what the relationship is between the exact provenience and the overall provenance. Another method is putting data in-memory but using a grid computing approach, where many machines are used to solve a problem.

Data provenance, just what the doctor ordered

The myGrid system [SRG03] provides middleware for biological experiments represented as workflows. To prevent this, such links are restricted to actor instances contained within a common actor instance of a containing or parent actor type.

How do we determine the impact values or where do we get them from? This collaborative project is focused on theory and systems supporting practical end-to-end provenance in high-end computing systems.

Similarly, a photograph of a painting may show inscriptions or a signature that subsequently became lost as a result of overzealous restoration.

An expert certification can mean the difference between an object having no value and being worth a fortune. When it comes to the storage, the manner in which the provenance metadata is stored is important to its scalability.

Provenance

By using lineage and data-flow information together a data scientist can figure out how the inputs are converted into outputs. Current approaches to using lineage in DISC systems do not address these. Challenge Implementation Properties of Provenance Representation?

The second being the existence of outliers in the data. This subsequently results in three elements such as 1 evidence 2 theory 3 applications. Provenance can be distinguished into two granularities those are: When presenting multimedia materials in e-learning environments, there are concerns of how it is to be presented as there are lots of methods like words, pictures, narrations and more.

Oaxaca Weather Report ,Representation ex: Each part has a variant and an invariant section. Same thing apply for the provenance of electronic data.

The challenges include scalability of the lineage store, fault tolerance of the lineage store, accurate capture of lineage for black box operators and many others. The number of associations and amount of storage required to store lineage will increase with the increase in size and capacity of the system.

Most of the existing approaches for information quality assessment are based on the information provided by users. FRIR has two levels of cryptographically computable which are content and message.

Each unique actor is represented by its own association table. To enable a detailed representation of providers the model describe in paper[12] distinguishes data providing services that process data access requests and send the documents over the Web, data publishers who use data providing services to publish their data, and service providers who operate data providing services.

Another approach is to manually inspect lineage logs to find anomalies, [13] [30] which can be tedious and time-consuming across several stages of a data-flow. Typically the jobs are mapped into several machines and results are later combined by reduce operations.

The below section will explain data provenance in more detail. Moreover, the provenance has the potential to hurt system performance: One way of solution is release successive version of database separately.

However, they enable sophisticated replay and debugging. The cost of collecting and storing provenance can be inversely proportional to its granularity.

This is generally done using a series of equality joins based on the actors themselves. The overall number of operators executing at any time in a cluster can range from hundreds to thousands depending on the cluster size. Http protocol plays an important in the Web.

Source provenance can be classified as original source, contributing source and input source. In databases they use key for citing tuples. We call this exclusive replay. Systems that consume linked data must evaluate quality and trustworthiness of the data.To provide learners with more interactive, sharable, open, and safe services, the data provenance is introduced and extended into the online informal learning environment in this paper.

It is proved to be helpful to the evaluation of authenticity and quality, the expansion of resource sharing, as well as the guarantee of security and privacy. Data Pro v enance: Some Basic Issues P eter Buneman, Sanjeev Khanna and W ang-Chiew T an Univ ersit yof P ennsylv ania Abstract.

The ease with whic h one can cop y and transform data on the W eb, has made it increasingly di cult to determine the origins of a piece of data. W e use the term data pr ovenanc e. Data Provenance: A Categorization of Existing Approaches∗ Boris Glavic, Klaus Dittrich University of Zurich Database Technology Research Group [email protected], [email protected] This extends to data provenance and knowing the location of your customer’s data and the laws that must be adhered to.

When applying geographical boundaries to digital assets the physical location and the data centre it resides in is of increasing importance. Data Provenance Data provenance documents the inputs, entities, systems, and processes that influence data of interest, in effect providing a historical record of the data and its origins.

Data Provenance in E-Learning

The generated evidence supports essential forensic activities such as data-dependency analysis, error/compromise detection and recovery, and auditing and. A New Perspective on Semantics of Data Provenance Sudha Ram, Jun Liu J McClelland Hall, Department of MIS, Eller School of Management, Data provenance is an overloaded term that has been defined differently by different people.

(i.e. change of state) that happens to data during its life time.

Download
Data provenance in e learning
Rated 3/5 based on 71 review