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add midterm blog post for Soumyadip Niyogi (gsoc26) - #1945
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Pull request overview
This pull request adds a new GSoC 2026 midterm progress blog post to the HSF website content, describing the current state of the “Integration of CMS Combine with FCCAnalyses” project.
Changes:
- Adds a new midterm blog post markdown file for Soumyadip Niyogi.
- Documents current implementation status (datacard generation + execution flag) and a ROOT/Combine issue encountered during validation.
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| ## Introduction | ||
| Hi again! We are at the midpoint of GSoC 2026, and I am excited to share the progress on my project bridging `FCCAnalyses` and `CMS Combine`. Since my introductory post, I have spent my time deep in the Python architecture of `FCCAnalyses`, transforming ROOT histograms from simulated e⁺e⁻ → ZH events into automated statistical models. | ||
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| The primary goal of this first half was to build the core datacard generation engine. I am happy to report that the automated pipeline is now up and running. You can check out the finalized skeleton framework in [my latest Pull Request here](https://github.com/HEP-FCC/FCCAnalyses/pull/520). |
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it's no longer a skeleton :)
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Removed "skeleton" in latest commit.
| Over the past month, I have successfully implemented the `fit.py` interface within the `FCCAnalyses` framework. Here is what the tool can currently do: | ||
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| * **Automated Datacard Generation:** The framework reads a user-defined, object-oriented Python configuration and automatically maps the requested signal and background processes to their respective ROOT shape histograms. It then spits out a perfectly formatted text-based `datacard.txt`. | ||
| * **The Execution Flag (`-e`):** To make the workflow completely seamless, I added a backend hook. By simply appending `-e` to the CLI command, the framework passes the newly generated datacard directly into a `subprocess` to execute `Combine` natively, eliminating the need for physicists to manually string together terminal commands. |
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You can maybe mention that the additional parameters for Combine can be provided after -- or in the fit script.
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Added in the latest commit.
Updated the blog post to refine language and clarify the framework's features.
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Hello @captainvogon, I see a few things to resolve from your side, checking by change the outstanding PRs. Can you act on those so that this PR can be finally merged? CC @HSF/gsoc-admins. |
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Hi @eduardo-rodrigues, I have updated the branch with main and I think the review comments have been addressed (should I resolve them?). Please let me know if any other changes are to be made. |
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Hi. That's great. Do resolve what is trivially, well, resolved. And leave what is best to check by the reviewers. I'm not maintaining these PRs that are related to the GSoC programme but have requested the GSoC admins a review, see at the top right. So we're good here and one of the team will look as time permits, I'm sure. (Do send a ping if you see to review within a week?) HTH |
This pull request adds my midterm progress blog post for the GSoC 2026 project "Integration of CMS Combine with FCCAnalyses".