11–20 of 213 posts
Very cool! I did something similar in Canada ( https://grocerytracker.ca/ )
A thorny problem in my case is that the same item is named in 3 different ways between the 3 supermarkets which makes it very hard and annoying to do a proper comparison.
Did you have a similar problem?
Very cool! I did something similar in Canada ( https://grocerytracker.ca/ )
Oh nice! A thorny problem in my case is that the same item is named in 3 different ways between the 3 supermarkets which makes it very hard and annoying to do a proper comparison. Did you have a similar problem?
Very cool! I did something similar in Canada ( https://grocerytracker.ca/ )
Ah, I love this. Nice work! I really wish supermarkets were mandated to post this information whenever the price of a particular SKU updated. The tools that could be built with such information would do amazing things for consumers.
Earlier quoted context omitted.
Oh nice! A thorny problem in my case is that the same item is named in 3 different ways between the 3 supermarkets which makes it very hard and annoying to do a proper comparison. Did you have a similar problem?
Absolutely! It’s made it difficult to implement some of the cross-retailer comparison features I would like to add. For my charts I’ve just manually selected some products, but I’ve also been trying to get a “good enough but not perfect” string comparison algorithm working.
My approach so far has been to first extract the brand names (which are also not written the same way for some fcking reason!), update the strings, and then compare the remaining.
If they have a high similarity (e.g. >95%) then they could be automatically merged, and then anything between 75%-95% can be reviewed manually.
The flip side to this is that very often you find that the data populating the site is in a very simple JSON format to facilitate easy rendering, ironically making the scraping process a lot more reliable.
Ah, I love this. Nice work! I really wish supermarkets were mandated to post this information whenever the price of a particular SKU updated. The tools that could be built with such information would do amazing things for consumers.
Earlier quoted context omitted.
Absolutely! It’s made it difficult to implement some of the cross-retailer comparison features I would like to add. For my charts I’ve just manually selected some products, but I’ve also been trying to get a “good enough but not perfect” string comparison algorithm working.
Ah yes. My approach so far has been to first extract the brand names (which are also not written the same way for some fcking reason!), update the strings, and then compare the remaining. If they have a high similarity (e.g. >95%) then they could be automatically merged, and then anything between 75%-95% can be reviewed manually.
Ah, I love this. Nice work! I really wish supermarkets were mandated to post this information whenever the price of a particular SKU updated. The tools that could be built with such information would do amazing things for consumers.
Thanks! If Greece's case is anything to go by, I doubt they'd ever accept that as it may bring to light some... questionable practices. At some point I need to deduplicate the products and plot the prices across all 3 supermarkets on the same graph as I suspect it will show some interesting trends.