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.
Total resources
239
-139
(
-36.8
%)
compared to the previous year
Ontologies
55
-51
(
-48.1
%)
compared to the previous year
Controlled vocabularies
110
-88
(
-44.4
%)
compared to the previous year
Schemes
74
+0
(
+0
%)
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)

Stacked bar chart showing the evolution of semantic resources over time, divided by type (Ontologies, Vocabularies, Data Schemas). The X axis shows the years, the Y axis shows the cumulative number of resources.

Data table Evolution of resources

Year Ontologies Vocabularies Data schemes Total
2023 35 71 0 106
2024 48 103 54 205
2025 73 154 74 301
2026 55 110 74 239

General description

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

Display

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

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

Data table Distribution of resources per holder over time

Holder Ontologies Vocabularies Data schemes Total

General description

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

Time 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.
Select year
Select the holder

Distribution of resources among the Owners by selected year and holder

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

Data table Monthly distribution of resources per holder

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

Boxplot chart showing the statistical distribution of harvester execution times per year, including minimum, maximum, quartile, and median values.

Data table Average harvesting time per year

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

General description

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 the views (sessions) of the catalog, in the selected reference period.
Data for the current month may be incomplete.
Graph showing the number of monthly views in the selected period. Use the controls above to change the time period.
No visit data available from Matomo.

The 5 most visited resources

Total number of views (sessions) of the resource in the selected reference period.
Data for the current month may be incomplete.
No visit data available from Matomo.
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