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p0 @ 21   / 0)R5+"H4    aC51    +) ghk lm!!(b$#|1VɥsE["$QD[g "$9;[; 8-nj$$$$$$b$6~gWZ]N#b$v{>?o8y%r 0e0e     A@ A5% 8c8c     ?1 d0u0@Ty2 NP'p<'pA)BCD|E||s " 0e@        @ABC DEEFGHIJK5%LMNOPQRSTUWYZ[ \]^_ `abN E5%  N E5%  N F   5%    !"?N@ABC DEFFGHIJK5%LMNOPQRSTUWYZ[ \]^_ `ab0 f̙f@84758=K ʚ;s4ʚ;g4qdqd(͍<T0tppp@ <4dddd=!0POw B___PPT10d 6@!(___PPT9{p!X?B 2006-06-12 IPAW 2006O  =W)7Metadata Management, Provenance & Notifications in LEAD4Yogesh L. Simmhan Marcus Christie Indiana University5"U'MyLEAD Metadata Catalog :!Metadata CatalogsjLarge volumes of scientific data require organized storage and search capabilities Scientist earlier used file systems & paper-based lab books, but& File systems provide limited metadata capability Notebooks do not scale well Allow the user community to store & access important data resources User s personal space on Grid that is shareable Visualize it, publish it, download it, curate it Data Discovery Searchable metadata directoriesSZB0Z(MZDZaZZ ZSBMDa   R&MyLEAD Metadata Catalog Organized catalog of personal resource metadata Actual data storage is virtualized The data itself my reside anywhere Replicas may exist. Data may move..SZFZSF;"Metadata in a Grid EnvironmentData products in many scientific domains are binary products  difficult to query directly Need the ability to find data products without complex query languages Queries search for data products based on properties (metadata attributes) of those products Service Oriented Architecture. Metadata is communicated via schema-based XML Some properties are complex  beyond name/value Properties must be extensible as models evolve Must be able to handle schema changes, multiple schemasH[P0P(P[<#Storing Metadata in MyLEADLEAD XML Metadata Schema (based on FGDC) interface with hybrid XML-Relational storage Extensible complex attributes & hierarchical relationships>%V(Provenance & Notifications 6 Data Provenance & Workflow TraceData Provenance is metadata on the derivation history of data products It provides information on the application used to derive a data product, and the inputs to that application Workflow Trace is metadata describing the runtime execution of applications composed as workflows It describes which applications were run as part of workflow, when & where they ran, and their inputs & outputsRZZZUses of ProvenanceTrace Workflow Execution What services were used during workflow execution? Validate if all steps of execution successful? Audit Trail What resources were used during workflow execution? Data Quality & Reuse What applications were used to derived data products? Which workflows use a certain data product? Attribution Who performed the experiment? Who owns the workflow & data products?b 5b Eb 5b  E7 'Using Notifications to Track Provenance(((Several Provenance Activities take place during the lifecycle of a workflow Workflow Related (Started, invoking service, & ) Service Related (Invoked, run App, finished& ) Data Related (Data Produced, Consumed) Activities are modeled as notifications that are sent by different components Loosely coupled, easy to generate provenance WS-Messenger Notification Broker acts as message bus Provenance service, Workflow composer & Portal (thro MyLEAD) subscribe to notificationsjLN-LN-Karma Provenance Architecture $ Querying ProvenancewThree types of provenance can be queried Process provenance When was an application run & in which WF? 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E.g. detection of a hurricane during run may trigger another workflow, or steer current workflow s direction. Help select services during workflow composition Adaptive: How & where the workflow executes is determined at runtime Helps with data selection. Determine the data products ingested, transformed, generated & reused by workflow. How reliable was the derivation process. How trust worthy is the data? Copyrights on data products & servicesnH H  0޽h ? 3380___PPT10.0fO0  _(  ^  S (K     c $  0)   UAThese can be used to mine the workflow run, perform replays, etc.H  0޽h ? 3380___PPT10.FX"0 P h(  d  c $(K     s *  0)   R>Should note that bioinformatics is an exception in that at least a significant portion of their data is in relational databases already  not binary products. H  0޽h ? 3380___PPT10.U #0  p (  d  c $(K     s *  0)   Some existing metadata catalogs do not take into consideration that scientific communities will be communicating metadata using XML, and that the schema(s) will vary depending on the community. As a service, the metadata catalog must be able to communicate metadata using the XML schema(s) of its community, must be able to handle updates, and must be able to query over the properties in the metadata. By having metadata attributes defined in the metadata catalog, structure is provided that would allow an ontology to reference concepts in the metadata, while still allowing for the addition of future complex attributes, or modifications to existing attributes, without schema changes. Many metadata catalogs developed for other grid projects have their own hierarchy for aggregating data. In myLEAD we use a File-Collection-Experiment-Project hierarchy. But the hierarchy is flexible (e.g., files can be contained directly in projects or experiments). Also, the hierarchy is easy to adjust for other domains as far as the number of levels and their naming. Additional complex metadata attributes can be defined and validated without changes to the XML or relational schema Flexible hierarchy to aggregate data products and query on hierarchical relationships. 6j ( ( >H  0޽h ? 3380___PPT10.P$%0 rj (  d  c $(K   ^  s *h  @)   ^Can query directly on objects (e.g., get me the collection that represents a WRF run) But also on the hierarchy that an object is contained within (e.g, within a project containing  Katrina in the title and run in April 2006, or the child of an ensemble experiment using grid spacing of 20km). In addition, can query on properties of a file contained within the collection (e.g., namelist settings in a configuration file). Integration with ontology being developed by UAH  connecting varying levels of knowledge to metadata attributes. Collaboration and sharing of metadata and data products among customizable groups of scientists. User interfaces for hierarchical context queries. (VS,+H  0޽h ? ̙330   (  ^  S (K     c $  0)   aInput params or data files Will refer to both of these as provenance (data & workflow provenance)VH  0޽h ? 3380___PPT10.[!0 @ %(  ^  S (K     c $  0)  @___PPT10 ^___PPT9@8 e Potential for both collaboration and reuse To create workflows, services need to be able to query for data Separates physical location from logical files Derived data products - data products result of processing original raw data Talk about experiments & projects @  (Z H  0޽h ? 3380___PPT10.ٍ ʥ$&0 `  4(   d   c $(K      s *,  0)    H   0޽h ? 3380___PPT10.|v=*o 0 p $(  $X $ C (K    $ S   0)   -In addition to Logging & Audit notifications &-- .H $ 0޽h ? 3380___PPT10.ލ= ru lj4iU{Wnuu>@ wO{CEQp?\I)XW1Oh+'0T hp  8Metadata Management, Provenance & Notifications in LEAD1@=@.VP@A_wGSg  )'    """)))UUUMMMBBB999|PP3f333f3333f3ffffff3f̙3ff333f333333333f33333333f33f3ff3f3f3f3333f33̙33333f333333f3333f3ffffff3f33ff3f3f3f3fff3ffffffffff3ffff̙fff3fffff3fff333f3f3ff3ff33f̙̙3̙ff̙̙̙3f̙3f333f3333f3ffffff3f̙3f3f3f333f3333f3ffffff3f̙3f3ffffffffff!___wwwrogr4'A x(xKʦ """)))UUUMMMBBB999|PP3f3333f333ff3fffff3f3f̙f3333f3333333333f3333333f3f33ff3f3f3f3333f3333333f3̙33333f333ff3ffffff3f33f3ff3f3f3ffff3fffffffff3fffffff3f̙ffff3ff333f3ff33fff33f3ff̙3f3f3333f333ff3fffff̙̙3̙f̙̙̙3f̙3f3f3333f333ff3fffff3f3f̙3ffffffffff!___wwwmݒmφhϭǧǧ⭭ϧǧüCmխέmmClܼlm⻮ⴻϧǭmϭϧ˜ݴmmݵ⼵ֵܴܻݴܭմִմϴϭϴݼü888888888888888888888888888888888888888888888888882222222222222222222222222222222222222222222222222288888888888888888888888888888888888888888888888888222222222222222222222222222222222222222222222222228888888888888888888888888888888888888888888888888822222222222222222222222222222222222222222222222222՜.+,0    @On-screen Show.  \ Arial GaramondTimes New RomanVerdana Wingdings Trebuchet MS Helvetica Courier New1_Level8Metadata Management, Provenance & Notifications in LEADMyLEAD Metadata CatalogMetadata CatalogsMyLEAD Metadata Catalog Metadata in a Grid EnvironmentStoring Metadata in MyLEADMyLEAD Query on HierarchyProvenance & Notifications!Data Provenance & Workflow TraceUses of Provenance(Using Notifications to Track ProvenanceKarma Provenance ArchitectureQuerying Provenance  Fonts UsedDesign Template Slide Titles _㣖0    !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~      !"#$%&'()*+,-./0123456789:;<=>?@ABCEFGHIJKMNOPQRSXRoot EntrydO)Pictures#Current UserLSummaryInformation(TPowerPoint Document(MǖDocumentSummaryInformation8D