# Flower Help - Intermediate

**URL:** https://discuss.flower.ai/c/flower-help-intermediate/6.md?page=2

[Latest](https://discuss.flower.ai/latest.md) · [Categories](https://discuss.flower.ai/categories.md) · [Tags](https://discuss.flower.ai/tags.md)

**Page:** 3

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## [Implementing leave-one-out cross-validation (LOOCV). How do I configure clients?](https://discuss.flower.ai/t/implementing-leave-one-out-cross-validation-loocv-how-do-i-configure-clients/112)

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**Author:** [@flower](https://discuss.flower.ai/u/flower)\
**Replies:** 0\
**Last updated:** [February 28, 2024, 5:14pm UTC](https://discuss.flower.ai/t/implementing-leave-one-out-cross-validation-loocv-how-do-i-configure-clients/112 "2024-02-28T17:14:58Z")

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This question was migrated from the Slack channel #questions. Original Question: Hi everyone, I’m exploring the Flower framework for federated learning using this example, where each client has its own training and val…

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## [Custom client selection strategy](https://discuss.flower.ai/t/custom-client-selection-strategy/63)

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**Author:** [@flower](https://discuss.flower.ai/u/flower)\
**Replies:** 0\
**Last updated:** [February 21, 2024, 5:19pm UTC](https://discuss.flower.ai/t/custom-client-selection-strategy/63 "2024-02-21T17:19:27Z")

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This question was migrated from Github Discussions. Original questions: “Hi! I would like to create a custom client selection strategy that at each round selects at random a number “m” of clients, each selected with pr…

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## [Implementing SecAggPlus into my Flower for both simulation and production scenarios](https://discuss.flower.ai/t/implementing-secaggplus-into-my-flower-for-both-simulation-and-production-scenarios/111)

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**Author:** [@flower](https://discuss.flower.ai/u/flower)\
**Replies:** 0\
**Last updated:** [February 28, 2024, 5:10pm UTC](https://discuss.flower.ai/t/implementing-secaggplus-into-my-flower-for-both-simulation-and-production-scenarios/111 "2024-02-28T17:10:37Z")

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This question was migrated from the Slack channel #questions. Original Question: Hello, I am trying to implement SecAggPlus into my Flower for both simulation and production scenarios. From this code example flower/exa…

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## [How do I write a custom client selection protocol?](https://discuss.flower.ai/t/how-do-i-write-a-custom-client-selection-protocol/74)

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**Author:** [@flower](https://discuss.flower.ai/u/flower)\
**Replies:** 1\
**Last updated:** [March 1, 2024, 9:33am UTC](https://discuss.flower.ai/t/how-do-i-write-a-custom-client-selection-protocol/74 "2024-03-01T09:33:04Z")

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A frequently asked question we get is: How do I write a custom client selection protocol? :thinking:

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