The numbers of Schema

Explore semantic resource monitoring data and catalog statistics.
Data is collected as of 2023, using the 'from the start' option in each chart's period change menu.

General overview

The main numbers of the resources available in the catalog and the owners who contribute to the content network.

Ontologies

88

-18

(

-17

%)

compared to the previous year

Controlled vocabularies

154

-44

(

-22.2

%)

compared to the previous year

Schemes

74

+0

(

+0

%)

compared to the previous year

Published resources

316

-62

(

-16.4

%)

compared to the previous year

Holders

17

+0

(

+0

%)

compared to the previous year

Evolution of resources

The graph shows the cumulative evolution of semantic resources from year to year, divided by type (Ontologies, Vocabularies, Data Schemas).

Evolution of resources (stacked bar graph)

Data table

Year	Ontologies	Vocabularies	Data schemes	Total
2023	35	71	0	106
2024	48	103	54	205
2025	73	154	74	301
2026	88	154	74	316

GENERAL DESCRIPTION

The graph shows the cumulative evolution of semantic resources from year to year, divided by type (Ontologies, Vocabularies, Data Schemas).

VISUALIZATION

The graph presents:

A stacked bar chart showing the temporal trend of resources
Three sets of data, one for each type of resource, with distinctive colors:
- Ontologies: blue
- Vocabularies: green
- Data schemes: orange
Axis X shows the years
The Y axis shows the cumulative number of resources

FUNCTIONALITY

Interactivity: you can interact with the chart to view the specific details of each bar
Legend: allows you to activate/deactivate the display of individual types of resources
Tooltip: when hovering the mouse shows the detailed values for each year, including the total
Table view: shows the data in numerical format for a precise consultation

The graph allows you to:

Analyze the overall growth of semantic resources over time
Compare the evolution of different types of resources
Identify periods of particular growth or stasis
Evaluate the distribution of resources among the different types

Resource holders

The graph shows the distribution of semantic resources among the various holders over time.

Distribution of resources among the Owners (over time)

Data table

Holder	Ontologies	Vocabularies	Data schemes	Total

GENERAL DESCRIPTION

The graph shows the distribution of semantic resources among the various holders over time.

TEMPORARY PERIOD

You can view the data for different time periods:

From the beginning: shows the total number of resources for each holder
Last year: shows the resources added in the last year
Last 6 months: shows the resources added in the last 6 months
Last 3 months: show resources added in the last 3 months

FUNCTIONALITY

Selection of holders: you can select which holders to display using the drop-down menu
Graphic display: shows the distribution of resources in stacked bar chart format
Table view: shows data in tabular format with totals for each category
Ordering: owners are ordered from the smallest to the largest according to the total number of resources

Evolution of semantic resources per owner

The graph shows the monthly trend of semantic resources by owner and by type of semantic resources.

Distribution of resources among the Owners

Data table

Monthly detail of resources per holder
Month	Ontologies	Vocabularies	Data schemes	Total

GENERAL DESCRIPTION

The graph shows the monthly trend of semantic resources by owner and by type of semantic resources.

FILTERS

You can filter the data by:

Year: Select the year of interest
Holder: select the holder whose data will be displayed

FUNCTIONALITY

Graphic display: shows the monthly distribution of resources in stacked bar chart format
Table view: shows data in tabular format with totals for each category
Data update: the data is updated only after clicking the "Filter" button

Harvesting times

Selecting the reference year shows the harvester execution time (the method used by the catalogue to extract automatically from the public administrations’ repositories). The graph shows the statistical distribution of the average Harvester execution time per year.

Running time Harvester

Average harvesting time per year

Data table

Statistical data of harvesting time per year
Year	Min(s)	P25(s)	Median(s)	P75(s)	Max(s)

The graph shows how long it takes the harvester system to collect and integrate data from contributor public administration repositories, year by year. You can see the minimum, maximum, average values and the statistical distribution of execution times.

How Harvesting Works
The Harvey checks if there is anything new in the GitHub repositories. If it finds changes, download the updated data, analyze it, and update the information in the databases.

What Metrics Mean
Min: minimum execution time recorded
P25: First quartile (25th percentile)
Median: Central value of distribution
P75: 3rd quartile (75th percentile)
Max: maximum execution time recorded

The time it takes to complete the harvesting can change depending on the amount of data to be analyzed, the number of changes found, and the performance of the server. The system is designed to be efficient and fast, avoiding unnecessary operations.

Trend of views

Monthly trend of catalogue views, in the selected reference period. The data refers to unique users who browse the catalog. Data for the current month may be incomplete.

Trend of views

The 5 most visited resources

Total number of views of the resource in the selected reference period. The data refers to unique users who browse the catalog.
Data for the current month may be incomplete.

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