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title: Staged Event Tree
email: your-email@example.com
description: >- # this means to ignore newlines until "baseurl:"
Write an awesome description for your new site here. You can edit this
line in _config.yml. It will appear in your document head meta (for
Google search results) and in your feed.xml site description.
description: An R package for learning and reasoning with staged trees
baseurl: "/" # the subpath of your site, e.g. /blog
url: "https://stagedtrees.github.io" # the base hostname & protocol for your site, e.g. http://example.com
#twitter_username: jekyllrb
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59 changes: 59 additions & 0 deletions _events/trees4cat.md
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---
layout: default
title: trees4cat
date: 2024-10-21
location: Genoa
---

# Trees4cat Workshop

#### 21-23 October 2024
#### DIMA - Department of Mathematics, University of Genoa, Italy

**Links:** [Main](https://stagedtrees.github.io/events/trees4cat.html) - [Submissions](https://stagedtrees.github.io/events/w2.Submissions.html) - [Program](https://stagedtrees.github.io/events/w3.Program.html) - [Info](https://stagedtrees.github.io/events/w4.Info.html) - [Participants](https://stagedtrees.github.io/events/w5.Participants.html)
{% include image.html width="500px" file="images/geg.png" %}

The **trees4cat Workshop** (Trees for Categorical Data) aims at
strengthening the European network of researchers working on staged trees, chain event graphs, reasoning on asymmetric independence, and models for contingency tables. This meeting builds up on two past meetings on the topic: The *1st UK Conference on Chain Event Graphs* organized in 2019 at the University of Glasgow and the *Conference on Reasoning with Asymmetric and Context-Specific Graphs* organized in 2021 by Baylor University and held online.

Topics related to the workshop include, but are not limited to:

- contingency tables
- staged trees
- asymptotic theory
- software implementations
- algebraic statistics

For further information please contact [the organizing committee](mailto:manuele.leonelli@ie.edu)

### Confirmed Speakers

- [Eliana Duarte](https://emduart2.github.io) (University of Porto)
- [Maria Kateri](https://www.isw.rwth-aachen.de/person.php?id=84) (RWTH Aachen University)
- [Manuele Leonelli](https://manueleleonelli.github.io) (IE University)
- [Tamás Rudas](https://statisztika.tatk.elte.hu/tanszeki_honlap/Rudas_Tamas) (Eötvös Loránd University)
- [Jim Smith](https://warwick.ac.uk/fac/sci/statistics/staff/academic-research/smith/) (University of Warwick)
- [Liam Solus](https://people.kth.se/~solus) (KTH University)

### Papers in Algebraic Statistics

Participants are encouraged to submit articles related to the topics of the workshop to the [Algebraic Statistics](https://msp.org/astat/about/journal/about.html) journal. Articles will be handled by members of the organizing committee and, if accepted, will appear in a single issue of the journal.

### Organizing Committee

- [Jane Hutton](https://warwick.ac.uk/fac/sci/statistics/staff/academic-research/hutton/) (University of Warwick)
- [Manuele Leonelli](https://manueleleonelli.github.io) (IE University)
- [Monia Lupparelli](https://scholar.google.com/citations?user=acIiN2EAAAAJ&hl=it) (University of Florence)
- [Francesco Porro](https://rubrica.unige.it/personale/UkJAU1lp) (University of Genoa)
- [Fabio Rapallo](https://rubrica.unige.it/personale/UkNHX1lh) (University of Genoa)
- [Eva Riccomagno](https://www.dima.unige.it/~riccomag/) (University of Genoa)
- [Rachel Wilkerson](http://www.rlwilkerson.com/about/) (Tesserwell, LLC)

**The event is supported by**

{% include image.html width="1000px" file="images/gnampa.jpeg" %}
{% include image.html width="300px" file="images/ecc.jpg" %}
{% include image.html width="300px" file="images/logo.jpeg" %}
{% include image.html width="300px" file="images/eccellenza2327.jpeg" %}


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---
layout: default
title: Registration
date: 2024-10-21
location: Genoa
---

# Trees4cat Workshop

#### 21-23 October 2024
#### DIMA - Department of Mathematics, University of Genoa, Italy


**Links:** [Main](https://stagedtrees.github.io/events/trees4cat.html) - [Submissions](https://stagedtrees.github.io/events/w2.Submissions.html) - [Program](https://stagedtrees.github.io/events/w3.Program.html) - [Info](https://stagedtrees.github.io/events/w4.Info.html) - [Participants](https://stagedtrees.github.io/events/w5.Participants.html)
{% include image.html width="500px" file="images/geg.png" %}

### Registration and Submissions

The participation to the workshop is free (no registration fee) and open to everyone, but please let us know if you are planning to attend. Please follow the links below to complete your registration and, if applicable, submit an abstract for a talk or poster presentation.

### Registration Form

To register for the workshop, please fill out the [Registration Form](https://docs.google.com/forms/d/e/1FAIpQLSeFk8DN3dhdap1-X6AlJ7eGcwYWFiiIk5r8DXNNn70kTosM0g/viewform).

### Abstract Submission

If you would like to present a talk or poster at the workshop, please submit your abstract using the [Abstract Submission Form](https://docs.google.com/forms/d/e/1FAIpQLSek05TThWHesPEMmx9ZbIM7kSlnq8EjdlnloUahQ02ZXv6yjw/viewform). If you are interested in partial financial support, please indicate this in the appropriate section of the registration form. **Note**: In order to be considered for financial support, you must present a talk or a poster.

### Important Dates

Early registrations are encouraged for organisational reasons - 1st call: **15th of September**.

### Papers in Algebraic Statistics

Participants are encouraged to submit articles related to the topics of the workshop to the [Algebraic Statistics](https://msp.org/astat/about/journal/about.html) journal. Articles will be handled by members of the organizing committee and, if accepted, will appear in a single issue of the journal.

We look forward to your participation!

**The event is supported by**


{% include image.html width="1000px" file="images/gnampa.jpeg" %}
{% include image.html width="300px" file="images/ecc.jpg" %}
{% include image.html width="300px" file="images/logo.jpeg" %}
{% include image.html width="300px" file="images/eccellenza2327.jpeg" %}





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---
layout: default
title: Program
date: 2024-10-21
location: Genoa
---

# Trees4cat Workshop

#### 21-23 October 2024
#### DIMA - Department of Mathematics, University of Genoa, Italy


**Links:** [Main](https://stagedtrees.github.io/events/trees4cat.html) - [Submissions](https://stagedtrees.github.io/events/w2.Submissions.html) - [Program](https://stagedtrees.github.io/events/w3.Program.html) - [Info](https://stagedtrees.github.io/events/w4.Info.html) - [Participants](https://stagedtrees.github.io/events/w5.Participants.html)
{% include image.html width="500px" file="images/geg.png" %}

### Program

The programme is still being finalized but the skeleton is as follows.

#### Monday 21st of October - Tutorials

- 14:00-16:00 - *Software for staged tree models* (Manuele Leonelli)
- 16:00-16:45 - Coffee break
- 16:45-18:45 - *Algebraic statistics of tree models* (Eliana Duarte)


#### Tuesday 22nd of October

- 09:00-10:00 - Talks
- 10:00-10:30 - Coffee break
- 11:30-12:30 - Poster lightning talks

- 12:30-14:30 - Lunch

- 14:30-15:30 - Talks
- 15:30-16:00 - Coffee break
- 16:00-18:00 - Talks
- 18:00-19:00 - Aperitivo

#### Wednesday 23rd of October

- 09:00-10:00 - Talks
- 10:00-10:30 - Coffee break
- 10:30-12:30 - Talks

### Poster Session

There will be posters available throughout the entire workshop to foster interaction and discussion. This provides an opportunity for participants to engage with the research and ideas presented by their peers in an informal setting.

### Social Program

Throughout the event, there will be regular coffee breaks, providing an opportunity to network and discuss ideas in a relaxed setting. Additionally, we will host an aperitivo, where you can enjoy light refreshments and informal conversations with fellow participants. A lunch will also be provided, giving everyone a chance to gather and share a meal together. All these social events will take place at the Department of Mathematics (DIMA), ensuring convenience and a friendly atmosphere.

### Abstracts

- *Software for staged tree models* (Manuele Leonelli): This tutorial will focus on the application of software for data analysis using staged tree models, a versatile class of statistical models designed to represent and reason about asymmetric dependence structures and sample spaces. Staged trees offer a flexible framework for modeling complex data dependencies, making them particularly valuable in various real-world scenarios. Participants will be guided through several case studies that highlight the practical utility of staged tree models. These case studies will demonstrate how the software can be employed to gain critical insights into data, uncovering patterns and relationships that might be overlooked by traditional methods. Through hands-on examples, attendees will learn how to build, analyze, and interpret staged tree models, leveraging the software’s capabilities to enhance their data analysis workflows.

- *Algebraic statistics of tree models* (Eliana Duarte): The goal of this tutorial is to introduce participants to key concepts in algebraic statistics and how these enable us to better understand statistical properties of tree models. One of the main insights in algebraic statistics is that in many cases, statistical models can be defined as the set of solutions to systems of polynomial equations. Understanding algebraic properties of these equations reveal useful properties of the model. The tutorial will start by introducing participants to algebraic concepts such as polynomial rings, ideals and the zero sets that they define via relevant examples in statistics. Next, these concepts will be used to study probability tree models and state the main results about them.

- *From explanations - to graphs - to geometry - to probabilistic causal reasoning* (Jim Q. Smith): It is not unusual for standard classes of graphical models such as undirected graphical models, Bayesian Networks or staged trees to provide an excellent framework for describing and then analysing their corresponding families of probability models - in particular both their algebraic geometric properties and their causal algebras. But for some applications only a more bespoke family of graphical models can express all the structural information needed to quantify causal inferences. Here I illustrate how it is then still possible to build new bespoke graphs that can then be embellished into other families of statistical to faithfully represent such a domain. Customising models in this way can then lead us to new insightful algebraic geometric descriptions of that domain and in particular more insightful deductions about the causal processes within it, in ways I will illustrate in this talk.

**The event is supported by**


{% include image.html width="1000px" file="images/gnampa.jpeg" %}
{% include image.html width="300px" file="images/ecc.jpg" %}
{% include image.html width="300px" file="images/logo.jpeg" %}
{% include image.html width="300px" file="images/eccellenza2327.jpeg" %}



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---
layout: default
title: Info
date: 2024-10-21
location: Genoa
---

# Trees4cat Workshop

#### 21-23 October 2024
#### DIMA - Department of Mathematics, University of Genoa, Italy


**Links:** [Main](https://stagedtrees.github.io/events/trees4cat.html) - [Submissions](https://stagedtrees.github.io/events/w2.Submissions.html) - [Program](https://stagedtrees.github.io/events/w3.Program.html) - [Info](https://stagedtrees.github.io/events/w4.Info.html) - [Participants](https://stagedtrees.github.io/events/w5.Participants.html)
{% include image.html width="500px" file="images/geg.png" %}

### How to Reach Genoa

The workshop will take place at the Dipartimento di Matematica (DIMA) of the University of Genoa.
Genoa can be reached either by plane or by train:

- **By train**: The main train stations in Genoa are Genova Piazza Principe and Genova Brignole, with the latter being the closest to the Math Department. Not all trains to Genova arrive to Genova Brignole, as some arrive to Genova Piazza Principe only. If this is the case for your train, you can reach Genova Brignole either by a short train ride, metro or bus.

- **By plane**: The closest airport is the Genoa Cristoforo Colombo Airport, farther alternatives are Milano Linate, Milano Malpensa and Pisa. To reach the city center you can either take a taxi or the - not so frequent - Volabus, which also stops at the De Ferrari Square and at the Genova Brignole train station. Alternatively, you can take the Airlink service bus to the train station Genova Sestri Ponente Aeroporto (which can also by reached by a 20mins walk in the middle of nowhere) and then take a train going to Genova Brignole. The Airlink requires a bus ticket which also works for the subsequent train ride within the city (if you buy the bus ticket "integrato", costing 2.20 euro).

### How to Reach the Department

The department is located in Via Dodecaneso 35, 16146 Genova. If you are planning to come to the department by public transport, the best choice is to take the bus 17/ or 16. If you come from the city center, you have to get out at the stop "Europa 1/Ospedale San Martino" and then take a 5 minute walk going up some stairs and going through a metal walkway. Another slightly slower but similar option from the city center is the 44 (getting out at the stop "San Martino 2/Papigliano" plus stairs and metal walkway). Bus tickets can be bought at "Tabacchi" or newspaper shops. Alternatively, you can buy bus tickets on the AMT app (Android, Apple).

**WARNING: Google maps occasionally doesn't show the 16 and 17 buses on its suggestions. You can find its path [here](https://www.amt.genova.it/amt/trasporto-multimodale/partenze/?linea=17&mappa=Mappa) (or use OpenStreetMap).**


If you're coming by car and find the gate closed, you just need to ring the interphone (Dipartimento di Matematica - DIMA) by the gate entrance and say you're here for the conference. After entering go straight untill you reach a big parking lot.

We are currently in contact with local hotels to arrange special deals and possibly have most participants in the same structure. For more details, please contact [the organizing committee](mailto:manuele.leonelli@ie.edu).

### What to Do in Genova and Liguria

Some nice spots to visit in Genoa are: Passeggiata Anita Garibaldi in Nervi and the Nervi park, Boccadasse and Corso Italia, Old port, Aquarium, Belvedere Castelletto which is accessible by foot or elevator, Via Garibaldi (with museums Palazzo Bianco and Palazzo Rosso), Via San Lorenzo and Duomo of San Lorenzo, Giardini Luzzati in the evening, Piazza De Ferrari, and Villa Durazzo Pallavicini.

Famous destionations around Genoa are Portofino and Cinque Terre (i.e. the five little towns of Monterosso, Vernazza, Corniglia, Manarola, and Riomaggiore), which are great for hiking. Other cool spots for a short visit are Camogli, Santa Margherita Ligure, Sestri Levante, Lerici and Porto Venere, all on the East of Genova.


**The event is supported by**


{% include image.html width="1000px" file="images/gnampa.jpeg" %}
{% include image.html width="300px" file="images/ecc.jpg" %}
{% include image.html width="300px" file="images/logo.jpeg" %}
{% include image.html width="300px" file="images/eccellenza2327.jpeg" %}



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---
layout: default
title: Participants
date: 2024-10-21
location: Genoa
---

# Trees4cat Workshop

#### 21-23 October 2024
#### DIMA - Department of Mathematics, University of Genoa, Italy


**Links:** [Main](https://stagedtrees.github.io/events/trees4cat.html) - [Submissions](https://stagedtrees.github.io/events/w2.Submissions.html) - [Program](https://stagedtrees.github.io/events/w3.Program.html) - [Info](https://stagedtrees.github.io/events/w4.Info.html) - [Participants](https://stagedtrees.github.io/events/w5.Participants.html)
{% include image.html width="500px" file="images/geg.png" %}

### List of Participants

- Jane Hutton (University of Warwick)
- Manuele Leonelli (IE University)
- Monia Lupparelli (University of Florence)
- Francesco Porro (University of Genoa)
- Fabio Rapallo (University of Genoa)
- Eva Riccomagno (University of Genoa)
- Rachel Wilkerson (Tesserwell, LLC)
- Jim Smith (University of Warwick)
- Conor Hughes (University of Warwick)
- Muhammad Shoaib (University of Genoa)
- Jack Carter (University of Genoa)
- Gareth Walley (Pinpoint Data Science)
- Aditi Shenvi (Habitat Energy)
- Liam Solus (KTH University)
- Eliana Duarte (University of Porto)
- Orlando Marigliano (University of Genoa)
- Maria Kateri (RWTH Aachen University)
- Tamás Rudas (Eötvös Loránd University)
- Sara Sommariva (University of Genoa)

**The event is supported by**


{% include image.html width="1000px" file="images/gnampa.jpeg" %}
{% include image.html width="300px" file="images/ecc.jpg" %}
{% include image.html width="300px" file="images/logo.jpeg" %}
{% include image.html width="300px" file="images/eccellenza2327.jpeg" %}




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---
layout: default
title: "Highly efficient structural learning of sparse staged trees @ PGM2022"
---


Paper accepted at PGM2022

https://proceedings.mlr.press/v186/leonelli22a.html


```
@inproceedings{leonelli2022highly,
title={Highly efficient structural learning of sparse staged trees},
author={Leonelli, Manuele and Varando, Gherardo},
booktitle={International conference on Probabilistic Graphical Models},
pages={193--204},
year={2022},
organization={PMLR}
}
```

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---
layout: default
title: "Paper published in Knowledge-Based Systems"
---


*A new class of generative classifiers based on staged tree models* at [url](https://www.sciencedirect.com/science/article/abs/pii/S0950705123002381)


```
@article{carli2023new,
title={A new class of generative classifiers based on staged tree models},
author={Carli, Federico and Leonelli, Manuele and Varando, Gherardo},
journal={Knowledge-Based Systems},
volume={268},
pages={110488},
year={2023},
publisher={Elsevier}
}
```

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