Conference programme - 19-th meeting of the Ottawa Group

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Conference programme

We invite you to check out the detailed program of our conference!

We have prepared three days full of inspiring presentations, panel discussions, and practical workshops. This is an excellent opportunity to gain new knowledge, exchange experiences, and establish valuable contacts.

You can find the detailed schedule below.

08:45 – 09:30

Registration of participants and welcome coffee

09:30 – 10:30

Opening speech

10:30 – 12:00

Session 1

Conceptual frameworks (modernisation of the CPI)

Chairperson: David Fenwick

  1. W. Erwin Diewert, Chihiro Shimizu - Challenges in Consumer Price Index Construction

  2. Vanda Guerreiro, Ken Van Loon - Measuring Inflation for Different Income Groups: An Exercise Towards a Harmonised European Approach
    A01 - Data Source – Scanner

  3. Satoshi Morimoto - Further Expansion of the Use of Alternative Data in Japan's Consumer Price Index (Tentative)
    B01 - Data Acquisition

12:00 – 13:00

Lunch break

13:00 – 14:30

Session 2

Conceptual frameworks (multilateral indices)

Chairperson: Jan de Haan

  1. Kevin J. Fox - The Curious Case of an Exploding GEKS Index
    A01 - Data Source – Scanner

  2. Ludwig von Auer - Multilateral Index Methods: A Test Approach with Scanner Data
    A01 - Data Source – Scanner, C02 - Index Methodology – Chaining/Extension

  3. Helen Sands, Tony Liu - Are Multilateral Methods the Holy Grail of Price Measurement? A Critical Examination of Their Promises and Practical Performance in Dynamic Datasets
    A01 - Data Source – Scanner, C02 - Index Methodology – Chaining/Extension, C03 - Imputation & Missing Data

14:30 – 15:00

Coffee break

15:00 – 16:45

Session 3

New data sources (cheapflation and product contributions)

Chairperson: Federico Polidoro

  1. Espen Kristiansen, Sebastian Kolstad, Kjersti Nyborg Hov - Assessing Cheapflation using Norwegian Scanner Data
    A01 - Data Source – Scanner, D02 - Case Study – Experimental CPI

  2. Federico Crescenzi, Gholamreza Hajargasht, Tiziana Laureti, Luigi Palumbo, D.S. Prasada Rao - Cheapflation and Inflation Inequality: Quantile Time Product Dummy Indices from Italian Web Prices
    A02 - Data Source – Web-Scraped, C01 - Index Methodology – General

  3. Jacek Białek - Multiplicative Decompositions of GEKS-type Indices into the Contribution of Individual Commodities
    C01 - Index Methodology – General

  4. Deepti Srivastava - Use of Administrative and Web Data in Comprehensive Updation of Indian CPI
    A03 - Data Source – Administrative, D01 - Case Study – National Practice

18:30

Meeting at the conference venue

19:00

Welcome cocktail in Skyworks 27, Widok Towers, al. Jerozolimskie 44

08:45 – 10:15

Session 4

Econometric approach (hedonic indices)

Chairperson: Rob Cage

  1. Naohito Abe, D.S. Prasada Rao - Commensurability in Hedonic Price Indices: The Necessity of Log Transformations
    A01 - Data Source – Scanner, C01 - Index Methodology – General, C03 - Imputation & Missing Data

  2. Patrick Kelly, Sabelo Nkosi - Brick by brick: Building a Hedonic model for South Africa’s Residential Property Price Index
    A03 - Data Source – Administrative, C01 - Index Methodology – General, D01 - Case Study – National Practice

  3. Sebastian Weinand, Stefan Hofbauer - Econometric approaches to separate land prices from the prices of structures
    C01 - Index Methodology – General

10:15 – 10:30

Photo session with coffee break

10:30 – 11:30

Info session

Chairperson: Jacek Białek

  1. Anastasios Saraidaris, Sebastian Reinecke - Implementation of ECOICOP version 2 in the Harmonized Index of Consumer Prices (HICP)
    B05 - Classification Methods

  2. Brian Graf - Updating the Producer Price Index Manual

  3. Peng Kong, Lijuan Dong, Jiaxiu Jiang, Jiaxin Wang - CPI in China: Key Updates and Progress
    E03 - Cross-Cutting Innovation

  4. Tanya Flower, Federico Polidoro, Serge Goussev, Collin Brown, Vladimir Miranda, Helen Sands - Are we FAIR? Using open data and making research projects reproducible in price statistics

  5. Tanya Flower, Federico Polidoro, Serge Goussev, Collin Brown, Vladimir Miranda, Helen Sands - Summary update from UN Task Team
    D03 - Training & Capacity Building

11.30 - 12.30

Lunch break

12:30 - 13:30

Poster session (with coffee)

  1. Federico Polidoro - UN Task Team on Scanner Data and Alternative Data Sources for CPI compilation - Updates from Work Stream on Training materials
    D03 - Training & Capacity Building

  2. Can Tongur, Olivia Ståhl, Martina Sundström - Voucher-Induced Seasonality in the Swedish Dental Care Services Price Index
    A01 - Data Source – Scanner

  3. Serge Goussev, Frances Krsinich - Putting windows in the black box: Developing a set of diagnostic and analytical tools to support multilateral price indexes in production
    A01 - Data Source – Scanner, D03 - Training & Capacity Building, E01 - Reproducibility & Open Data

  4. Julika Herzberg, Thomas A. Knetsch, Dilyana Popova, Jannik Schaller, Patrick Schwind, Sebastian Weinan - Impact of changes in consumption patterns on the HICP upper-level aggregation error: evidence from the COVID-19 phase and the recent high inflation period
    C05 - Aggregation & Weighting

  5. Olivia Ståhl - Implementing COICOP18 and Reference Year 2020 in the Swedish CPI
    D02 - Case Study – Experimental CPI

  6. Kentaro Fujii, Mihina Hirota, Yuriko Yamauchi, Ayako Masujima, Yasufumi Gemma - Expansion of Items Subject to Quality Adjustment through the Hedonic Method: New Passenger Vehicles, Microprocessors, and Interchangeable-Lens Cameras
    C01 - Index Methodology – General

  7. Matthew Macdonald, Elspeth Hazell, Serge Goussev, Collin Brown - More than just systems: Statistics Canada’s experience incorporating alternative data into the CPI
    B02 - IT Systems, Pipelines & Tools, D01 - Case Study – National Practice

  8. Tigran Baghdasaryan, Kristine Karapetyan, Gor Lazyan - Using Non-Traditional Data Sources for Nowcasting CPI in Central Bank of Armenia
    A02 - Data Source – Web-Scraped

  9. Stefan Hofbauer - A land price index for Austria
    D01 - Case Study – National Practice

  10. Issei Morita, Kenta Nomura, Ryo Aruga, Yasufumi Gemma - Ensuring Imputation Accuracy in PPI Compilation: Validations Based on Reported Price Data and Simulations
    C03 - Imputation & Missing Data

  11. Anthony Dawson, Joseph Keating, Edel Flannery - New data sources in the Irish Consumer Price Index
    A01 - Data Source – Scanner, B01 - Data Acquisition

  12. Luigi Palumbo, Federico Polidoro, Giovanni Tonutti - Computing global PPPs for accommodation services with online travel agencies data
    A02 - Data Source – Web-Scraped

  13. Inês Nunes, Luigi Palumbo, Luca Bacco, Tiziana Laureti, Luca Vollero - Classification at scale: a Retrieval-Augmented Classification framework for COICOP 2018 Consumer Products
    A02 - Data Source – Web-Scraped, B05 - Classification Methods, E03 - Cross-Cutting Innovation

  14. Corinne Becker, Yves Carpy - Land registry data to produce two new statistics: a census of the number of property transactions and a price index for multi-family houses
    A03 - Data Source – Administrative

  15. Tanapon Poonthong, Varayut Boonyasri, Pakapon Ngiampisal - Thailand: Challenges in Integrating Artificial Intelligence to Design Automated Systems for Thailand's Consumer Price Index Compilation
    A02 - Data Source – Web-Scraped, B03 - Data Preprocessing, B05 - Classification Methods

  16. Sandra Lim - Shrinkflation in Singapore's Consumer Price Index
    B06 - Data Quality & Assurance, D01 - Case Study – National Practice

13:30 - 15:15

Session 5

Housing statistics (OOH, HPI)

Chairperson: Corinne Becker

  1. Jan de Haan, Kai Cheung - Three Non-Hedonic Methods for Constructing a House Price Index: SPAR, Time Property Dummy and Repeat Sales
    C01 - Index Methodology – General

  2. Ishtpreet Kaur, Sicong Ma, Patrick Sabourin, Faouzi Tarkhani - Owned Accommodation in the Canadian CPI: A Comparative Analysis of Measurement Approaches, Including an Exploration of Asking-Rent Rental Equivalence
    D02 - Case Study – Experimental CPI

  3. Thomas A. Knetsch, Jannik Schaller, Patrick Schwind - The impact of OOH augmentation on HICP measurement: Status-quo estimates for Germany
    C05 - Aggregation & Weighting, D02 - Case Study – Experimental CPI

  4. W. Erwin Diewert, Chihiro Shimizu - Alternative Methods for Measuring Owner-Occupied Housing Costs: Empirical Comparison of Rent, User Cost, Financial User Cost and Opportunity Cost Approaches
    C01 - Index Methodology – General

15:15 - 16:00

Panel discussion

Modern price measurement, new data sources, the retail revolution - challenges and perspectives of different stakeholders

Moderator: Jan de Haan

Experts: Marek Cierpiał – Wolan, Magda Ciżkowicz-Pękała, Erwin Diewert, Tanya Flower, Federico Polidoro

17:45

Meeting at the conference venue

18:00

Guided walking tour of the Royal Łazienki Musuem

19:00

Official dinner in the Old Orangery, Royal Łazienki Museum, ul. Agrykola 1

09:00 – 10:30

Session 6

Conceptual frameworks (contributions to inflation, comparing index series)

Chairperson: Kevin Fox

  1. Ludwig von Auer - Decomposition of Official Price Indices into Price Change and Three Sources of Representativity Bias
    A03 - Data Source – Administrative, C01 - Index Methodology – General

  2. Patrick Schwind, Sebastian Weinand - Contributions to euro area inflation over arbitrary time periods
    C05 - Aggregation & Weighting

  3. Bernhard Goldhammer, Miriam Steurer - A Framework for Measuring Similarity of Index Time Series
    C01 - Index Methodology – General

10:30 – 10:45

Coffee break

10:45 - 12:15

Session 7

AI-QA (Machine Learning, Large Language Models)

Chairperson: Karol Szafranek

  1. William Spackman, Collin Brown, Ekram Hoque, Serge Goussev - Large Language Models (LLM) in Price Statistics: Applications beyond classification
    D01 - Case Study – National Practice, E03 - Cross-Cutting Innovation

  2. Claude Lamboray, Lucien May - How can Machine Learning improve constant quality price measurement?
    A01 - Data Source – Scanner, C03 - Imputation & Missing Data, E01 - Reproducibility & Open Data

  3. Manuel Koller - It is expensive, so it must be high quality?! The danger of index drift as a result of fluctuating product characteristics in combination with pronounced price patterns over a product’s lifespan
    C01 - Index Methodology – General, C02 - Index Methodology – Chaining/Extension

12:15 - 13:15

Lunch break

13:15 - 15:00

Session 8

Challenging areas of price measurement (inflation in clothing, footwear and food)

Chairperson: Randi Johannessen

  1. Sofie Öhman, Martina Sundström, Can Tongur - Transaction Data on Clothing and Footwear in the Swedish CPI
    A01 - Data Source – Scanner

  2. Antonietta D’Amore, Paola Pompei, Rosabel Ricci - Consumer price survey: collection of data on clothing and footwear prices using web scraping techniques
    B01 - Data Acquisition

  3. Matthew MacDonald, Clément Yélou, Greg DeVilliers, Jacob Milner - An Empirical Comparison of Alternative Price Index Approaches Based on Canadian Scanner Data for Food Categories in the Consumer Price Index
    A01 - Data Source – Scanner

  4. Steve Coffey, Gabriel Ehrlich, John Haltiwanger, David Johnson, Tod Johnson, Matthew D. Shapiro - Inflation in Food at Home: Early Results from the RESET Demonstration Project
    A01 - Data Source – Scanner, B05 - Classification Methods, C02 - Index Methodology – Chaining/Extension

15:00 - 15:15

Coffee break

15:15 - 16:15

Session 9

Index number formulae (elementary and superlative indices)

Chairperson: Patrick Kelly

  1. Yuri Dikhanov - Range of possible results for certain classes of superlative price indices
    C01 - Index Methodology – General

  2. Jacek Białek, Yuri Dikhanov - Properties of the Young-Balk-Mehrhoff-Dikhanov elementary price index
    C01 - Index Methodology – General

16:15 - 16:30

Outlook 2028 meeting

Closing remark

16:30 – 17:00

Farewell coffee