<commit_before>RDF Schema
====

Why RDF ?
--------

1. By the time i write this documentation, Diavgeia hosts over 24.3 Million pdf documents. That said, it is obvious that there is a great demand for space storage, as well as the fact that documents are stored as pdf files, eliminates our ability to extract statistical information. Extraction of statistical information is based on unreliable techniques (i.e. OCR) and thus we can not explore documents in an efficient way (i.e. pose queries). In other words, we want to upgrade the currently stored [1 star-decisions to 5 stars-decisions](http://5stardata.info/en/) and save some disk space.

2. The majority of decisions, follow the model of `taking into consideration the law  X - we decide`. We want to make sure, that these laws exist and link each decision with the laws that has taken into consideration, or even with other decisions of Diavgeia. Ideally, the user would be able to just click a consideration of the decision and read the specific law of the greek legislation. That would greatly limit the time spend on navigating through the greek law.

The Schema
----------------

### Decision Types and Samples

Diavgeia currently hosts 34 different decision types and thus the implemented rdf schema should support all of them. Decisions share some common properties, but we should take care of the special properties each one may have. You can find some samples [here](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples) and explore the specific decision properties.

It follows a table which shows the match between the different types of decisions and the greek translation which are currently used in Diavgeia.


| RDF Decision Classes      |     Greek Translation     |
| --------------------------| :------------------------:|
| [AffiliatedInvestments](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/AffiliatedInvestments)     | ΠΡΑΞΗ ΥΠΑΓΩΓΗΣ ΕΠΕΝΔΥΣΕΩΝ |
| [Appointment](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Appointment)              | ΔΙΟΡΙΣΜΟΣ                 |
| [Award](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Award)                     | ΚΑΤΑΚΥΡΩΣΗ                |
| [BalanceAccount](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/BalanceAccount)            | ΙΣΟΛΟΓΙΣΜΟΣ - ΑΠΟΛΟΓΙΣΜΟΣ |
| [BudgetApproval](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/BudgetApproval)            | ΕΓΚΡΙΣΗ ΠΡΟΫΠΟΛΟΓΙΣΜΟΥ    |
| [Circular](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Circular)                  | ΕΓΚΥΚΛΙΟΣ                 |
| [CollegialBodyCommisionWorkingGroup](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/CollegialBodyCommisionWorkingGroup) | ΠΡΑΞΗ ΠΟΥ ΑΦΟΡΑ ΣΕ ΣΥΛΛΟΓΙΚΟ ΟΡΓΑΝΟ - ΕΠΙΤΡΟΠΗ - ΟΜΑΔΑ ΕΡΓΑΣΙΑΣ - ΟΜΑΔΑ ΕΡΓΟΥ - ΜΕΛΗ ΣΥΛΛΟΓΙΚΟΥ ΟΡΓΑΝΟΥ                 |
| [CommisionWarrant](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/CommisionWarrant)          | ΕΠΙΤΡΟΠΙΚΟ ΕΝΤΑΛΜΑ        |
| [Contract](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Contract)                  | ΣΥΜΒΑΣΗ                   |
| [DeclarationSummary](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/DeclarationSummary)        | ΠΕΡΙΛΗΨΗ ΔΙΑΚΗΡΥΞΗΣ       |
| [DevelopmentLawContract](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/DevelopmentLawContract)    | ΣΥΜΒΑΣΗ - ΠΡΑΞΕΙΣ ΑΝΑΠΤΥΞΙΑΚΩΝ ΝΟΜΩΝ |
| [DisciplinaryAcquitance](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/DisciplinaryAcquitance)   | ΑΘΩΩΤΙΚΗ ΠΕΙΘΑΡΧΙΚΗ ΑΠΟΦΑΣΗ |
| [DonationGrant](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/DonationGrant)             | ΔΩΡΕΑ - ΕΠΙΧΟΡΗΓΗΣΗ       |
| [EvaluationReportOfLaw](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/EvaluationReportOfLaw)     | ΕΚΘΕΣΗ ΑΠΟΤΙΜΗΣΗΣ ΓΙΑ ΤΗΝ ΚΑΤΑΣΤΑΣΗ ΤΗΣ ΥΦΙΣΤΑΜΕΝΗΣ ΝΟΜΟΘΕΣΙΑΣ |
| [ExpenditureApproval](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/ExpenditureApproval)       | ΕΓΚΡΙΣΗ ΔΑΠΑΝΗΣ           |
| [GeneralSpecialSecretaryMonocraticBody](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/GeneralSpecialSecretaryMonocraticBody)       | ΠΡΑΞΗ ΠΟΥ ΑΦΟΡΑ ΣΕ ΘΕΣΗ ΓΕΝΙΚΟΥ - ΕΙΔΙΚΟΥ ΓΡΑΜΜΑΤΕΑ - ΜΟΝΟΜΕΛΕΣ ΟΡΓΑΝΟ          |
| [InvestmentPlacing](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/InvestmentPlacing)         | ΠΡΑΞΗ ΥΠΑΓΩΓΗΣ ΕΠΕΝΔΥΣΕΩΝ |
| Law                       | ΝΟΜΟΣ                     |
| [LegislativeDecree](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/LegislativeDecree)         | ΠΡΑΞΗ ΝΟΜΟΘΕΤΙΚΟΥ ΠΕΡΙΕΧΟΜΕΝΟΥ (Σύνταγμα, άρθρο 44, παρ 1) |
| [Normative](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Normative)                 | ΚΑΝΟΝΙΣΤΙΚΗ ΠΡΑΞΗ         |
| [OccupationInvitation](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/OccupationInvitation)      | ΠΡΟΚΗΡΥΞΗ ΠΛΗΡΩΣΗΣ ΘΕΣΕΩΝ |
| [Opinion](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Opinion)                   | ΓΝΩΜΟΔΟΤΗΣΗ               |
| [OtherDecisions](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/OtherDecisions)            | ΛΟΙΠΕΣ ΔΙΟΙΚΗΤΙΚΕΣ ΠΡΑΞΕΙΣ|
| [OtherDevelopmentLaw](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/OtherDevelopmentLaw)       | ΑΛΛΗ ΠΡΑΞΗ ΑΝΑΠΤΥΞΙΑΚΟΥ ΝΟΜΟΥ|
| [OwnershipTransferOfAssets](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/OwnershipTransferOfAssets) | ΠΑΡΑΧΩΡΗΣΗ ΧΡΗΣΗΣ ΠΕΡΙΟΥΣΙΑΚΩΝ ΣΤΟΙΧΕΙΩΝ  |
| PaymentFinalisation     | ΟΡΙΣΤΙΚΟΠΟΙΗΣΗ ΠΛΗΡΩΜΗΣ   |
| [PublicPrototypeDocuments](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/PublicPrototypeDocuments)  | ΔΗΜΟΣΙΑ ΠΡΟΤΥΠΑ ΕΓΓΡΑΦΑ   |
| [Records](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Records)                   | ΠΡΑΚΤΙΚΑ (Νομικού Συμβουλίου του Κράτους)  |
| [ServiceChange](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/ServiceChange)             | ΥΠΗΡΕΣΙΑΚΗ ΜΕΤΑΒΟΛΗ       |
| [SpatialPlanningDecisions](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/SpatialPlanningDecisions)  | ΠΡΑΞΕΙΣ ΧΩΡΟΤΑΞΙΚΟΥ - ΠΟΛΕΟΔΟΜΙΚΟΥ ΠΕΡΙΕΧΟΜΕΝΟΥ |
| [StartProductionalFunctionOfInvestment](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/StartProductionalFunctionOfInvestment)  | ΑΠΟΦΑΣΗ ΕΝΑΡΞΗΣ ΠΑΡΑΓΩΓΙΚΗΣ ΛΕΙΤΟΥΡΓΙΑΣ ΕΠΕΝΔΥΣΗΣ |
| [SuccessfulAppointedRunnerUpList](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/SuccessfulAppointedRunnerUpList)        | ΠΙΝΑΚΕΣ ΕΠΙΤΥΧΟΝΤΩΝ, ΔΙΟΡΙΣΤΕΩΝ & ΕΠΙΛΑΧΟΝΤΩΝ     |
| [Undertaking](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Undertaking)               | ΑΝΑΛΗΨΗ ΥΠΟΧΡΕΩΣΗΣ|
| [WorkAssignmentSupplyServicesStudies](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/WorkAssignmentSupplyServicesStudies)| ΑΝΑΘΕΣΗ ΕΡΓΩΝ / ΠΡΟΜΗΘΕΙΩΝ / ΥΠΗΡΕΣΙΩΝ / ΜΕΛΕΤΩΝ      |

You can click on the RDF-Classes to see the samples, organized in directories. These directories may have 3 or 4 files inside. More specifically:
  1. There is a `.pdf` file, which is found in the current production website of Diavgeia and it can be downloaded from https://diavgeia.gov.gr/{IUN}
  2. A `metadata.json` file, which has the metadata that government institutions may fill during the procedure. Metadata is downloaded from https://diavgeia.gov.gr/luminapi/api/decisions/{IUN}
  3. Α `version_history.json` file, which corresponds to the history of a specific decision. This file is included only in the examples that alternate a decision (e.g. this [DonationGrant](https://github.com/eellak/gsoc17-diavgeia/blob/master/rdf/samples/DonationGrant/version_history.json))
  4. A `.n3` file, which is the decision expressed according to the rdf schema.

### URIs - ELI

  Recently, the European Council introduced the European Legislation Identifier ([ELI](http://www.eli.fr/en/)) as a new common framework that has to be adopted by the national legal publishing systems in order to unify and link national legislation with European legislation. Diavgeia's RDF Schema adopts the ELI URI Format, as follows:

  `http://diavgeia.gov.gr/eli/decision/{IUN}/{Version}`

  IUN (or ADA for Greeks) is the unique Internet Uploading Number (IUN) which a decision gets when it has been successfully uploaded to Diavgeia. However, IUN alone can not identify a decision, due to its possible alternations. There are two kinds of modifications that can occur in a decision:
  1. **Metadata Correction** : Government institutions correct only typos and wrong metadata of a decision, but the main concept of the decision remains unchanged. Then, new decisions hold the same IUN, but they are assigned a unique Version Identifier.
  2. **Decision Change** : Government institutions may completely change a decision (remove considerations, add more acts, etc) and when this is the case, Diavgeia gives a new IUN (and Version) to the document.

  Every different decision type is implemented as a subclass of `eli:LegalResource`. The `eli:repeals` object property links a decision with another decision when a correction happens. It is obvious that a `eli:repeals` which connects two entities that have the same IUN version, indicates a *Metadata Correction*, whereas in the case of decisions with different IUN, it indicates a *Decision Change*.

### Classes
  The ontology prefix of Diavgeia is `dvg` with value `http://diavgeia.gov.gr/ontology/`.

#### Consideration
  *Format* : `http://diavgeia.gov.gr/eli/decision/{IUN}/{Version}/Consideration/{consideration_number}`

  *Description* : `Consideration` is the entity of a law/decision or any other source that has been considered, in order to decide an action.

  *Properties*
  - A `Decision(LegalResource)` uses the `dvg:has_considered` object property to connect the decision entity with its `Considerations`.
  - A `Consideration` uses the `dvg:considers` object property, in order to link to the [Greek Legislation Ontology](http://legislation.di.uoa.gr/), or to other decisions of Diavgeia. For instance the second consideration of [this legislative decree](https://github.com/eellak/gsoc17-diavgeia/blob/master/rdf/samples/LegislativeDecree/%CE%A9%CE%9F00%CE%98%CE%A9%CE%A0-%CE%A7%CE%94%CE%9D.n3), is expressed as `<http://diavgeia.gov.gr/eli/decision/ΩΟ00ΘΩΠ-ΧΔΝ/51c1bc5c-0eb8-4cb5-8204-3a48efef91bb/Consideration/2>`, it `dvg:considers` the *article 18 of law 3446/2006* and the last one can be found at  `<http://legislation.di.uoa.gr/eli/law/2006/3446/article/18>`.
  - `Considerations` also have `dvg:text` data type property which is the actual text that government institutions compose.

- - -

#### Decision
  *Format* : `http://diavgeia.gov.gr/eli/decision/{IUN}/{Version}/Decision/{decision_number}`

  *Description* : `Decision` is the entity which describes everything that the government institution has decided.

  *Properties*
  - A `Decision(LegalResource)` uses the `dvg:has_decided` object property to connect the decision entity with its `Decisions`.
  - A `Decision` uses the `dvg:decision_relates` object property, in order to link to the [Greek Legislation Ontology](http://legislation.di.uoa.gr/), or to other decisions of Diavgeia. For instance the forth decision of [this legislative decree](https://github.com/eellak/gsoc17-diavgeia/blob/master/rdf/samples/LegislativeDecree/%CE%A9%CE%9F00%CE%98%CE%A9%CE%A0-%CE%A7%CE%94%CE%9D.n3), is expressed as `<http://diavgeia.gov.gr/eli/decision/ΩΟ00ΘΩΠ-ΧΔΝ/51c1bc5c-0eb8-4cb5-8204-3a48efef91bb/Decision/4>`, it  `dvg:decision_relates` the *second paragraph of article 18 of law 3446/2006* and the last one can be found at `<http://legislation.di.uoa.gr/eli/law/2006/3446/article/18/paragraph/2>`.
  - `Decisions` also have `dvg:has_text` data type property which is the actual text that government institutions compose (__Range__:**xsd:string**).

- - -

#### PreConsideration
  *Format* : `http://diavgeia.gov.gr/eli/decision/{IUN}/{Version}/PreConsideration`

  *Description* : `PreConsideration` is the entity which describes everything that the government institution wants to be included before the Consideration segment.
<commit_msg>Add Sections to the rdf documentation<commit_after>Adoption of RDF in Diavgeia
====

Sections
-------
1. [Diavgeia Issues](#diavgeia-issues)
2. [The RDF Schema](#the-rdf-schema)
3. [Decision Types and Samples](#decision-types-and-samples)
4. [URIs - ELI](#uris---eli)
5. [Schema Classes](#schema-classes)
6. [Common Datatype Properties](#common-datatype-properties)

Diavgeia Issues
--------

1. By the time i write this documentation, Diavgeia hosts over 24.3 Million pdf documents. That said, it is obvious that there is a great demand for space storage, as well as the fact that documents are stored as pdf files, eliminates our ability to extract statistical information. Extraction of statistical information is based on unreliable techniques (i.e. OCR) and thus we can not explore documents in an efficient way (i.e. pose queries). In other words, we want to upgrade the currently stored [1 star-decisions to 5 stars-decisions](http://5stardata.info/en/) and save some disk space.

2. The majority of decisions, follow the model of `taking into consideration the law  X - we decide`. We want to make sure, that these laws exist and link each decision with the laws that has taken into consideration, or even with other decisions of Diavgeia. Ideally, the user would be able to just click a consideration of the decision and read the specific law of the greek legislation. That would greatly limit the time spend on navigating through the greek law.

The RDF Schema
----------------

We will solve the aforementioned issues, by expressing decisions using a RDF Schema. A "side-effect" of this work is to promote the [Open Linked Data movement](https://en.wikipedia.org/wiki/Linked_data#Linked_open_data) and more generally the [open governance](https://en.wikipedia.org/wiki/Open_government).

### Decision Types and Samples

Diavgeia currently hosts 34 different decision types and thus the implemented rdf schema should support all of them. Decisions share some common properties, but we should take care of the special properties each one may have. You can find some samples [here](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples) and explore the specific decision properties.

It follows a table which shows the match between the different types of decisions and the greek translation which are currently used in Diavgeia.


| RDF Decision Classes      |     Greek Translation     |
| --------------------------| :------------------------:|
| [AffiliatedInvestments](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/AffiliatedInvestments)     | ΠΡΑΞΗ ΥΠΑΓΩΓΗΣ ΕΠΕΝΔΥΣΕΩΝ |
| [Appointment](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Appointment)              | ΔΙΟΡΙΣΜΟΣ                 |
| [Award](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Award)                     | ΚΑΤΑΚΥΡΩΣΗ                |
| [BalanceAccount](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/BalanceAccount)            | ΙΣΟΛΟΓΙΣΜΟΣ - ΑΠΟΛΟΓΙΣΜΟΣ |
| [BudgetApproval](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/BudgetApproval)            | ΕΓΚΡΙΣΗ ΠΡΟΫΠΟΛΟΓΙΣΜΟΥ    |
| [Circular](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Circular)                  | ΕΓΚΥΚΛΙΟΣ                 |
| [CollegialBodyCommisionWorkingGroup](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/CollegialBodyCommisionWorkingGroup) | ΠΡΑΞΗ ΠΟΥ ΑΦΟΡΑ ΣΕ ΣΥΛΛΟΓΙΚΟ ΟΡΓΑΝΟ - ΕΠΙΤΡΟΠΗ - ΟΜΑΔΑ ΕΡΓΑΣΙΑΣ - ΟΜΑΔΑ ΕΡΓΟΥ - ΜΕΛΗ ΣΥΛΛΟΓΙΚΟΥ ΟΡΓΑΝΟΥ                 |
| [CommisionWarrant](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/CommisionWarrant)          | ΕΠΙΤΡΟΠΙΚΟ ΕΝΤΑΛΜΑ        |
| [Contract](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Contract)                  | ΣΥΜΒΑΣΗ                   |
| [DeclarationSummary](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/DeclarationSummary)        | ΠΕΡΙΛΗΨΗ ΔΙΑΚΗΡΥΞΗΣ       |
| [DevelopmentLawContract](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/DevelopmentLawContract)    | ΣΥΜΒΑΣΗ - ΠΡΑΞΕΙΣ ΑΝΑΠΤΥΞΙΑΚΩΝ ΝΟΜΩΝ |
| [DisciplinaryAcquitance](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/DisciplinaryAcquitance)   | ΑΘΩΩΤΙΚΗ ΠΕΙΘΑΡΧΙΚΗ ΑΠΟΦΑΣΗ |
| [DonationGrant](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/DonationGrant)             | ΔΩΡΕΑ - ΕΠΙΧΟΡΗΓΗΣΗ       |
| [EvaluationReportOfLaw](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/EvaluationReportOfLaw)     | ΕΚΘΕΣΗ ΑΠΟΤΙΜΗΣΗΣ ΓΙΑ ΤΗΝ ΚΑΤΑΣΤΑΣΗ ΤΗΣ ΥΦΙΣΤΑΜΕΝΗΣ ΝΟΜΟΘΕΣΙΑΣ |
| [ExpenditureApproval](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/ExpenditureApproval)       | ΕΓΚΡΙΣΗ ΔΑΠΑΝΗΣ           |
| [GeneralSpecialSecretaryMonocraticBody](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/GeneralSpecialSecretaryMonocraticBody)       | ΠΡΑΞΗ ΠΟΥ ΑΦΟΡΑ ΣΕ ΘΕΣΗ ΓΕΝΙΚΟΥ - ΕΙΔΙΚΟΥ ΓΡΑΜΜΑΤΕΑ - ΜΟΝΟΜΕΛΕΣ ΟΡΓΑΝΟ          |
| [InvestmentPlacing](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/InvestmentPlacing)         | ΠΡΑΞΗ ΥΠΑΓΩΓΗΣ ΕΠΕΝΔΥΣΕΩΝ |
| Law                       | ΝΟΜΟΣ                     |
| [LegislativeDecree](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/LegislativeDecree)         | ΠΡΑΞΗ ΝΟΜΟΘΕΤΙΚΟΥ ΠΕΡΙΕΧΟΜΕΝΟΥ (Σύνταγμα, άρθρο 44, παρ 1) |
| [Normative](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Normative)                 | ΚΑΝΟΝΙΣΤΙΚΗ ΠΡΑΞΗ         |
| [OccupationInvitation](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/OccupationInvitation)      | ΠΡΟΚΗΡΥΞΗ ΠΛΗΡΩΣΗΣ ΘΕΣΕΩΝ |
| [Opinion](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Opinion)                   | ΓΝΩΜΟΔΟΤΗΣΗ               |
| [OtherDecisions](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/OtherDecisions)            | ΛΟΙΠΕΣ ΔΙΟΙΚΗΤΙΚΕΣ ΠΡΑΞΕΙΣ|
| [OtherDevelopmentLaw](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/OtherDevelopmentLaw)       | ΑΛΛΗ ΠΡΑΞΗ ΑΝΑΠΤΥΞΙΑΚΟΥ ΝΟΜΟΥ|
| [OwnershipTransferOfAssets](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/OwnershipTransferOfAssets) | ΠΑΡΑΧΩΡΗΣΗ ΧΡΗΣΗΣ ΠΕΡΙΟΥΣΙΑΚΩΝ ΣΤΟΙΧΕΙΩΝ  |
| PaymentFinalisation     | ΟΡΙΣΤΙΚΟΠΟΙΗΣΗ ΠΛΗΡΩΜΗΣ   |
| [PublicPrototypeDocuments](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/PublicPrototypeDocuments)  | ΔΗΜΟΣΙΑ ΠΡΟΤΥΠΑ ΕΓΓΡΑΦΑ   |
| [Records](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Records)                   | ΠΡΑΚΤΙΚΑ (Νομικού Συμβουλίου του Κράτους)  |
| [ServiceChange](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/ServiceChange)             | ΥΠΗΡΕΣΙΑΚΗ ΜΕΤΑΒΟΛΗ       |
| [SpatialPlanningDecisions](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/SpatialPlanningDecisions)  | ΠΡΑΞΕΙΣ ΧΩΡΟΤΑΞΙΚΟΥ - ΠΟΛΕΟΔΟΜΙΚΟΥ ΠΕΡΙΕΧΟΜΕΝΟΥ |
| [StartProductionalFunctionOfInvestment](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/StartProductionalFunctionOfInvestment)  | ΑΠΟΦΑΣΗ ΕΝΑΡΞΗΣ ΠΑΡΑΓΩΓΙΚΗΣ ΛΕΙΤΟΥΡΓΙΑΣ ΕΠΕΝΔΥΣΗΣ |
| [SuccessfulAppointedRunnerUpList](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/SuccessfulAppointedRunnerUpList)        | ΠΙΝΑΚΕΣ ΕΠΙΤΥΧΟΝΤΩΝ, ΔΙΟΡΙΣΤΕΩΝ & ΕΠΙΛΑΧΟΝΤΩΝ     |
| [Undertaking](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/Undertaking)               | ΑΝΑΛΗΨΗ ΥΠΟΧΡΕΩΣΗΣ|
| [WorkAssignmentSupplyServicesStudies](https://github.com/eellak/gsoc17-diavgeia/tree/master/rdf/samples/WorkAssignmentSupplyServicesStudies)| ΑΝΑΘΕΣΗ ΕΡΓΩΝ / ΠΡΟΜΗΘΕΙΩΝ / ΥΠΗΡΕΣΙΩΝ / ΜΕΛΕΤΩΝ      |

You can click on the RDF-Classes to see the samples, organized in directories. These directories may have 3 or 4 files inside. More specifically:
  1. There is a `.pdf` file, which is found in the current production website of Diavgeia and it can be downloaded from https://diavgeia.gov.gr/{IUN}
  2. A `metadata.json` file, which has the metadata that government institutions may fill during the procedure. Metadata is downloaded from https://diavgeia.gov.gr/luminapi/api/decisions/{IUN}
  3. Α `version_history.json` file, which corresponds to the history of a specific decision. This file is included only in the examples that alternate a decision (e.g. this [DonationGrant](https://github.com/eellak/gsoc17-diavgeia/blob/master/rdf/samples/DonationGrant/version_history.json))
  4. A `.n3` file, which is the decision expressed according to the rdf schema.

### URIs - ELI

  Recently, the European Council introduced the European Legislation Identifier ([ELI](http://www.eli.fr/en/)) as a new common framework that has to be adopted by the national legal publishing systems in order to unify and link national legislation with European legislation. Diavgeia's RDF Schema adopts the ELI URI Format, as follows:

  `http://diavgeia.gov.gr/eli/decision/{IUN}/{Version}`

  IUN (or ADA for Greeks) is the unique Internet Uploading Number (IUN) which a decision gets when it has been successfully uploaded to Diavgeia. However, IUN alone can not identify a decision, due to its possible alternations. There are two kinds of modifications that can occur in a decision:
  1. **Metadata Correction** : Government institutions correct only typos and wrong metadata of a decision, but the main concept of the decision remains unchanged. Then, new decisions hold the same IUN, but they are assigned a unique Version Identifier.
  2. **Decision Change** : Government institutions may completely change a decision (remove considerations, add more acts, etc) and when this is the case, Diavgeia gives a new IUN (and Version) to the document.

  Every different decision type is implemented as a subclass of `eli:LegalResource`. The `eli:repeals` object property links a decision with another decision when a correction happens. It is obvious that a `eli:repeals` which connects two entities that have the same IUN version, indicates a *Metadata Correction*, whereas in the case of decisions with different IUN, it indicates a *Decision Change*.

### Schema Classes
  The ontology prefix of Diavgeia is `dvg` with value `http://diavgeia.gov.gr/ontology/`.

#### Consideration
  *Format* : `http://diavgeia.gov.gr/eli/decision/{IUN}/{Version}/Consideration/{consideration_number}`

  *Description* : `Consideration` is the entity of a law/decision or any other source that has been considered, in order to decide an action.

  *Properties*
  - A `Decision(LegalResource)` uses the `dvg:has_considered` object property to connect the decision entity with its `Considerations`.
  - A `Consideration` uses the `dvg:considers` object property, in order to link to the [Greek Legislation Ontology](http://legislation.di.uoa.gr/), or to other decisions of Diavgeia. For instance the second consideration of [this legislative decree](https://github.com/eellak/gsoc17-diavgeia/blob/master/rdf/samples/LegislativeDecree/%CE%A9%CE%9F00%CE%98%CE%A9%CE%A0-%CE%A7%CE%94%CE%9D.n3), is expressed as `<http://diavgeia.gov.gr/eli/decision/ΩΟ00ΘΩΠ-ΧΔΝ/51c1bc5c-0eb8-4cb5-8204-3a48efef91bb/Consideration/2>`, it `dvg:considers` the *article 18 of law 3446/2006* and the last one can be found at  `<http://legislation.di.uoa.gr/eli/law/2006/3446/article/18>`.
  - `Considerations` also have `dvg:text` data type property which is the actual text that government institutions compose.

- - -

#### Decision
  *Format* : `http://diavgeia.gov.gr/eli/decision/{IUN}/{Version}/Decision/{decision_number}`

  *Description* : `Decision` is the entity which describes everything that the government institution has decided.

  *Properties*
  - A `Decision(LegalResource)` uses the `dvg:has_decided` object property to connect the decision entity with its `Decisions`.
  - A `Decision` uses the `dvg:decision_relates` object property, in order to link to the [Greek Legislation Ontology](http://legislation.di.uoa.gr/), or to other decisions of Diavgeia. For instance the forth decision of [this legislative decree](https://github.com/eellak/gsoc17-diavgeia/blob/master/rdf/samples/LegislativeDecree/%CE%A9%CE%9F00%CE%98%CE%A9%CE%A0-%CE%A7%CE%94%CE%9D.n3), is expressed as `<http://diavgeia.gov.gr/eli/decision/ΩΟ00ΘΩΠ-ΧΔΝ/51c1bc5c-0eb8-4cb5-8204-3a48efef91bb/Decision/4>`, it  `dvg:decision_relates` the *second paragraph of article 18 of law 3446/2006* and the last one can be found at `<http://legislation.di.uoa.gr/eli/law/2006/3446/article/18/paragraph/2>`.
  - `Decisions` also have `dvg:has_text` data type property which is the actual text that government institutions compose (__Range__:**xsd:string**).

- - -

#### PreConsideration
  *Format* : `http://diavgeia.gov.gr/eli/decision/{IUN}/{Version}/PreConsideration`

  *Description* : `PreConsideration` is the entity which describes everything that the government institution wants to be included before the Consideration segment.

{'fraction_non_alphanumeric': 0.10763255924546247, 'fraction_numerical': 0.016168661329951654, 'mean_word_length': 4.09592084006462, 'pattern_counts': {'":': 0, '<': 11, '<?xml version=': 0, '>': 11, 'https://': 78, 'lorem ipsum': 0, 'www.': 2, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 12, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '860864', 'n_tokens_mistral': 9592, 'n_tokens_neox': 10446, 'n_words': 2065}