SOTA recommender

I have recently become interested in the recommendation algorithms used for E-Commerce, streaming services and social media.

As an exercise, I thought I might try recommending new SOTA summits to activators based on their previous activity and summits activated by others who have activated the same summits in the past.

This has absolutely no scientific pretensions, and will probably have no practical use, except perhaps to amuse one or other activator who might be curious about new summits to discover.

That said, any feedback would be welcome.

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Nice! It correctly guessed my #1 ā€˜most wanted’ summit (that I have been meaning to do for years, but it’s a long drive). All the other suggestions are solid too - they are all on my ā€˜to-do’ list.

:beers:

Thought of a suggestion: pull a WX forecast for the next 24 hrs for each summit and display in the results. I want to do all of these summits, but which one is going to have good weather Tomorrow?

Answer for this weekend is: NONE OF THEM. Unless you like torrential rain, high winds, and snow above 4000’ / 1200m :confused:

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Well, That is interesting!

I live in Canada and the list of suggestions for me was only in the UK, where I activate only during trips I take with my wife. The surprise was to discover that 27 out of my 224 unique activations were made in the UK. I also have 4 chases (all S2S) and 1 of those made a complete!

I am planning a trip to the UK in 2026, so I will be looking at the suggested list.

Thanks for the suggestions.

Ian

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Useful already. By suggesting it, it alerted me to the fact that I’d neglected to upload my logs for Rocky Mountain!

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Interesting! It returns 50 suggestions for me, dotted around the country. Rather like suggestions to buy from Lidl (people like you also bought: cabbage, plasma cutter, socks).

I guess this might be because I live close to, and have often activated, a number of popular 2 pointers, which have also been activated by lots of others……

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Any suggestions for good free weather forecast services that accept lat/long ?

At least for the USA:

To obtain the grid forecast for a point location, use the /points endpoint to retrieve the current grid forecast endpoint by coordinates:

https://api.weather.gov/points/{latitude},{longitude}
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@ON6ZQ

That’s an interesting tool Christophe, thanks for the trial. It gave me this as my top option:

I have tried to activate that summit three times over the last few years, and every time we’ve had to turn back due to rubbish weather ha ha! :cloud_with_rain::cloud_with_snow:

I wish someone could invent a sunshine control app for visitors/residents of the UK :rofl:

73, Simon

Very interesting Christophe.

Many people will have their favourite weather app that works best for their area; so guess it will be difficult to have one size fit all.

What could be interesting to add, is a date or time period and the suggestions could be influenced by other external factors including weather, etc.

By the way, how often is the data refreshed, some of the suggestions on my list I activated earlier in the week (and uploaded yesterday)

73, Robert

Your wish is my command :slight_smile:

Nice! But you have a bug… it’s feeding the ā€˜score’ in to the WX URL for longitude =)

api.openweathermap.org/data/2.5/forecast?lat={lat}&lon={lon}&appid={API key}

Oops :slight_smile:

Fixed. Thank you.

Thanks. Now what can you do about these terrible WX forecasts? I really need some sunshine! :rofl:

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I could hard code ā€œbright sunshineā€ whenever callsign is ā€œWU7Hā€ā€¦ But the forecast accuracy may vary :slight_smile:

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Got it spot on Christophe. Isle of Man summits head my list. Just needs a holiday over there with the XYL… going alone would be a serious offence.

I was surprised how few GM summits are on my list. A trip to Northern Ireland or Belgium seems more likely. I can’t complain as I like ferries. Just need the funds. :grinning_face:

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Nice little application! Just a side note, you might want to add in some input validation checks to the text field.

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yr.no has a quite good API that covers the entire globe.

Hi Christophe,

For me, I get a list of summits in the DM association and none in the DL association, I would have expected a mix, given my location. I have activated far more DL summits than DM ones, perhaps that’s why most suggestions are over 3 hour drives away, mainly in DM/BW but also other DM regions?

An interesting experiment in any case.

73 Ed DD5LP.

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Interesting idea. Please take the following comments as positive ideas and interesting observations.

For me it hasn’t really worked. It’s come up with mostly Scottish and Northern Irish summits. I think it would need some parameters based on my own targets.

The primary one is activating at least 1 summit in new Associations and to a lesser extent new regions.

It could possibly be deduced based on my activation pattern, with several Associations/Regions having 1 or a handful of activations by me. Currently on 33 Associations and 61 Regions. I have no idea how this compares to others… but I suspect that’s a fairly high number of Associations and that could drive the algorithm to accentuate new Associations?

My actual ā€œwantedā€ list now contains summits in Eastern Europe and the multiple associations I haven’t done in Spain (Portugal too), I might make a dent in this next year with a motorhome trip. I’m also off to Cyprus in a month or so to get the ā€œAsiaā€ continent, to add to Europe, Africa and Australasia.

I’m also driven by activator points (there… I’ve said it now) and another analysis would show in recent years a reasonably high focus on the 10/8 point summits in FL and DM. This year I finished all my personal unique 10pt summits in FL/VO for example.

I am interested if an AI analysis of my activation pattern might bring all of this out.

Ooooooh, too many SOTA targets :slight_smile:

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