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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
which has collected
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which has collected" is correct and usable in written English.
It can be used to refer to something that has gathered or accumulated over time, often in a descriptive or explanatory context. Example: "The data, which has collected over several years, provides valuable insights into the trends."
✓ Grammatically correct
News & Media
Science
Academia
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
18 Several healthcare systems worldwide have implemented the routine collection of PROM data, one example being the English National Health Service (NHS), which has collected data before and after elective surgeries since 2009.
Science
I point to the scum, which has collected nicely inside top of jar.
News & Media
You can read the glorious puns over at Politics MO, which has collected the best, er, cracks about the tweet.
News & Media
Amnesty International USA, which has collected more than 60,000 signatures in a petition seeking a new trial for him, attacked Monday's decision.
News & Media
Intergraph, which has collected $450 million from Intel in a dispute over the patents, is also suing Hewlett-Packard, Dell and Gateway over the patents.
News & Media
Shoah Foundation Institute for Visual History and Education, which has collected remembrances of tens of thousands of survivors of the Holocaust and the concentration camps, his family said.
News & Media
Jade Ali, 28, who has a daughter with Huxtable, has started a petition to "get them home", which has collected more than 1,200 signatures.
News & Media
Wrain, which has collected thousands of signatures in opposition to the project, has planned a noon rally for Saturday on the steps of New Rochelle City Hall.
News & Media
According to the Times's Lede blog, which has collected images of the violence, activists "posted clip after clip online showing shots being fired at demonstrators across Syria".
News & Media
The British Museum, which has collected the best of what human civilisation has to offer – not without controversy – is now open to the world for free.
News & Media
His team built the Moral Machine, which has collected 28 million decisions to-date about how autonomous cars should prioritize risk.
Academia
Expert writing Tips
Best practice
When using "which has collected", ensure that the "which" clause clearly refers to a specific noun or noun phrase in the preceding sentence to maintain clarity.
Common error
Avoid using "which has collected" when "that has collected" is more appropriate. "That" introduces essential clauses that define the noun, while "which" introduces non-essential clauses that add extra information. If removing the clause changes the sentence's core meaning, use "that" instead of "which".
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which has collected" functions as a relative clause, providing additional, non-essential information about the noun or noun phrase it modifies. Ludwig AI confirms that this usage is grammatically sound. The relative clause specifies an action of gathering or accumulating, adding descriptive detail.
Frequent in
News & Media
46%
Science
33%
Academia
15%
Less common in
Formal & Business
2%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "which has collected" is a grammatically correct and versatile phrase used to introduce non-essential relative clauses, providing supplementary information about a noun or noun phrase. Ludwig AI analysis highlights its frequent occurrence in news, scientific, and academic contexts, signifying a neutral to formal register. The phrase is effective for adding descriptive detail about a process of gathering or accumulation, with alternatives like "that has gathered" or "that has amassed" offering nuanced variations in meaning. Remember to use "which" correctly, distinguishing it from "that", and ensure your usage aligns with the intended level of formality and specificity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that has gathered
Uses "gathered" instead of "collected", implying a slightly more natural or less deliberate accumulation.
that has accumulated
Substitutes "collected" with "accumulated", implying a gradual increase over time.
that has amassed
Replaces "collected" with "amassed", suggesting a large quantity has been gathered, often with effort.
which has compiled
Uses "compiled" instead of "collected", suggesting a more organized and structured gathering of information.
that has aggregated
Substitutes "collected" with "aggregated", which specifically refers to combining data from multiple sources.
that has assembled
Replaces "collected" with "assembled", implying a gathering of distinct parts into a whole.
which has curated
Substitutes "collected" with "curated", implying a selective and careful gathering, often with a focus on quality.
that has obtained
Uses "obtained" suggesting that data/items/info has been acquired more or less intentionally.
which has garnered
Replaces "collected" with "garnered", which often implies gaining something, such as support or attention.
that has harvested
Uses "harvested" instead of "collected", suggesting a systematic gathering, often from a natural source.
FAQs
How to use "which has collected" in a sentence?
Use "which has collected" to introduce a non-essential clause that provides additional information about something previously mentioned. For example, "The museum, "which has collected" artifacts from around the world, is opening a new exhibit."
What can I say instead of "which has collected"?
You can use alternatives like "that has gathered", "that has amassed", or "that has accumulated" depending on the context.
Is it correct to say "that has collected" instead of "which has collected"?
Both "which has collected" and "that has collected" can be grammatically correct, but they are used in different contexts. "Which" introduces non-restrictive clauses that provide extra information, while "that" introduces restrictive clauses that are essential to the meaning of the sentence. Choose the one that best fits the intended meaning.
What's the difference between "which has collected" and "which has compiled"?
"Which has collected" generally implies gathering or accumulating items or information. "Which has compiled", on the other hand, suggests organizing collected information into a structured format, for example: a report, a database, etc. Consider the difference when choosing the most appropriate phrase.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested