The recently discovered planet Kepler-90i was found via machine learni

Question

Project SC Butler: Day 181: Sentence Correction (SC2) 
 For SC butler Questions  Click Here

The recently discovered planet Kepler-90i was found via machine learning, a form of artificial intelligence in which the identification of planets learned by computers is done from data by finding in the Kepler telescope instances of recorded signals from planets beyond our solar system, known as exoplanets.

A) the identification of planets learned by computers is done from data by finding in the Kepler telescope instances of recorded signals from planets

B) computers learn to identify planets by finding in the Kepler telescope instances of recorded signals from planets

C) computers learn to identify planets by finding in data from the Kepler telescope instances of the planet’s recorded signals from

D) computers learn to identify planets by finding in data from the Kepler telescope instances of recorded signals from planets

E) the identification of planets is learned by computers by finding in data from the Kepler telescope instances of recorded signals from planets

generis · Answer

OFFICIAL EXPLANATION

Project SC Butler: Day 181: Sentence Correction (SC2)

• HIGHLIGHTS

• Whenever you see sentences this long, look at modifiers and placement.

• Try to group the ideas. Just doodle a little. No kidding.  If you are stuck , write a few nouns or noun phrases:
 computers . . . identification of planets . . . data . . . telescope records signals from planets

Much more quickly than you would expect, your mind will start rearranging pieces and looking for clues. Just start.

• be careful with dismissing options that are in passive voice. Estimates of correct answers that are in the passive voice range from 15 to 40 percent.

• if you cannot figure out the meaning from the prompt, keep reading options. If you remember to  keep moving,  your mind will piece the correct parts together

• rough meaning: Far away planets send signals that a Kepler telescope records. From the recordings contained in the data, computers learn to identify planets and in fact recently discovered one called Kepler 90i

THE PROMPT

THE OPTIONS

• Although the phrasing is confusing, I can pick out what is wrong:
--  the identification of planets learned by computers  is not clear. 
Is the identification learned by computers? Or are the planets learned by computers? 
-- We don't say that someone or something "learns a planet."
-- we learn to  identify  a planet—so we are probably looking for something such as  computers learn to identify planets. 
-- how do computers learn to identify planets? They use data.

• This phrasing is strange: computers find instances of recorded signals from the planets  IN the telescope. 
The telescope gathers data. That data must be recorded signals. In these data (and not "in" the telescope), computers could find signals from planets.
• This sentence is in passive voice 
-- Because  computers  identify planets, it is very likely that  computers  should come first.
Eliminate A

• Meaning is almost clear after I read B. But whatever the computers are finding . . .
• The computers are not "finding ____ in the telescope." Same problem as that in A.
Eliminate B

• the non-underlined phrase  known as exoplanets  is an appositive that must modify the closest possible noun. ( known  is an irregular past participle, a verbED.) 
•  signals from beyond our solar system  are not  known as exoplanets . Wrong.
Eliminate C

• This sentence clears up the meaning: the computers find in the data   from the Kepler telescope's instances of signals from planets   beyond our solar system
• The modifier at the end is correct. The planets from which the telescope gathers data are   planets  beyond our solar system .
KEEP

• again, just as in (A)  the identification of planets  precedes  computers.  
• computers should take the lead. Computers are an active subject. They learn to identify planets in a particular way. Option D is better. 
Eliminate E

The best answer is D

• NOTES

These sentences are long. They do not contain easily-caught grammar problems.
Solve for bits and pieces..

COMMENTS  
These answers range from very good to excellent.
I like the variety.
Kudos to all with correct answers and good explanations.

suchithra · Answer

A and E can be eliminated because it is in passive form. 
Between B, C, D - Planets beyond our solar system is the correct usage. "from planet’s recorded signals from beyond our solar system" is awkward.
B seems to have a Typo but since D sounds correct, I eliminate B

A)  the identification of planets learned by computers  is done from data by finding in the Kepler telescope instances of recorded signals from planets

B) computers learn to identify planets by in in the Kepler telescope instances of recorded signals from planets beyond our solar system

C) computers learn to identify planets by finding in data from the Kepler telescope instances of the  planet’s recorded signals from

D) computers learn to identify planets by finding in data from the Kepler telescope instances of recorded signals from planets

E)  the identification of planets is learned by computers  by finding in data from the Kepler telescope instances of recorded signals from planets

SonGoku · Answer

generis 
Something's wrong with option B.

A,E why do we need passive when we have active?Lets see if remaining active voice options have any errors.

The progressive in the sentence makes the option wrong.the non underlined portion should refer to planets,But it's referring to signals.
option A No verb the identification of the planets {?verb?}learned
compare E and D. D is best.
Option D is the next best choice. no passive form .D is the answer.
We'll have to see whether option B brings surprises.

generis · Answer

SonGoku  , thank you. The option was missing the word "finding."

exc4libur · Answer

MEANING
Planet K was discovered via machine learning, a form of AI in which computers learn to identify planets by finding in data instances of signals from planets beyond our solar system.

What is beyond our solar system? "planets", not "planet's signals"
What do computers do? "find data from the telescope", they do not "find in the telescope data";

A) "finding in the… telescope" nonsense; "id is done from data" nonsense;
B) "finding in the… telescope" nonsense;
C) "planet’s… signals from beyond" nonsense;
E) "id is learned by computers" nonsense.

Answer (D)

eakabuah · Answer

This question is very tricky. It can however be decoded when you know the roles played by various modifiers. In addition, the meaning is paramount.

Option A: The recently discovered planet Kepler-90i was found via machine learning, a form of artificial intelligence in which   the identification of planets learned by computers is done     from data   by finding   in the Kepler telescope   instances of recorded signals from planets beyond our solar system, known as exoplanets. I identified two issues with option 1, and this is applicable to option E as well. The first one which is key is the wordiness of the  identification of planets learned by computers . It can just be written as   computers learn to identify planets  , which is more concise. But I won't eliminate A based on this yet. 
The second issue has to do with the modifiers.   is done   should be followed by   by finding     from data in the Kepler telescope   instances of recorded signals from planets   beyond our solar system, known as exoplanets.  from data  should be modified by   in the Kepler telescope  . It is not appropriate to separate them. In addition, moving  by finding  away from the verb  is done  creates an awkward sentence. Based on the second issue, I know options A and E are not correct.

Option B: The recently discovered planet Kepler-90i was found via machine learning, a form of artificial intelligence in which computers learn to identify planets by finding in the Kepler telescope instances of recorded signals from planets beyond our solar system, known as exoplanets. I will assume that the phrase beyond our solar system occurs just once. Option B misses a critical piece of information;   data from  . We know computers work on data. The sentence would be clearer and more meaningful if it included   data from   right after   by finding in  . As it is, the meaning is that computers identify planets by finding in the Kepler telescope instances of recorded signals from planets... It doesn't make sense for computers to find instances of recorded signals from planets in the Kepler telescope. A computer with such capability must be extremely powerful. Eliminate option B.

Option C: The recently discovered planet Kepler-90i was found via machine learning, a form of artificial intelligence in which   computers learn to identify planets     by finding in data from the Kepler telescope   instances of the    planet’s   recorded signals from beyond our solar system ,  known as exoplanets . This option is quite tricky. But a focus on the meaning will reveal that it is incorrect. Known as exoplanets in the sentence was very key for me. The question is what is known as exoplanets? Is it the recorded signals from beyond our solar system? Definitely not. Eliminate option C.

Option D: The recently discovered planet Kepler-90i was found via machine learning, a form of artificial intelligence in which   computers learn to identify planets     by finding in data from the Kepler telescope   instances of recorded signals  from   planets   beyond our solar system , known as exoplanets. Option D is correct. The sequence of the modifiers is correct. Last but not the least, unlike option C, option D avoids the meaning dilemma by not using the possessive form planets. It is logical to say that ...planets beyond our solar system are known as exoplanets.

TheNightKing · Answer

Reason 1: The sentences are in Passive Voice.
Reason 2: Modifier issue. A form of AI in which "the identification" is not the best way to generalise AI. It has to be more general to define AI in the context.

One reason to quickly pick D is to realise "planets" are from beyond the solar system. 
If not then, the other reason is to realise C just mentions one planet where as D says signals from planets. which means there are multiple planets out there.

Option D.

TheNightKing · Answer

generis , Sorry for the tag. I know you have already edited the option B but it still need an edit.

B) computers learn to identify planets by finding in the Kepler telescope instances of recorded signals from planets  beyond our solar system

The bold part is redundant.

Thank you!

generis · Answer

TheNightKing  , thank you. Edited.

mykrasovski · Answer

The recently discovered planet Kepler-90i was found via machine learning, a form of artificial intelligence in which the identification of planets learned by computers is done from data by finding in the Kepler telescope instances of recorded signals from planets beyond our solar system, known as exoplanets.

Quick read-through reveals that the sentence primarily tests meaning. It seems that the sentence attempts to say that ML is a form of AI in which computers do something.

A)  the identification of planets learned by computers  is done  from data  by finding in the Kepler telescope instances of recorded signals from planets
 - Incorrect.  This option is a hot mess.  The identification of planets learned by computers  does not make much sense. Also, it would be better to say  using data  rather than  from data .

B)  computers learn to identify planets   by finding in the Kepler telescope instances of recorded signals  from planets
 - Incorrect.  Again, the highlighted part is a mess... Is it possible to find instances of planets in the telescope? Ugh... It is definitely possible to find new stars or planets  using  a telescope.

C)  computers learn to identify planets by finding  in data from the Kepler telescope instances of  the planet’s recorded signals from 
 - Incorrect.  The highlighted part is very confusing...  Computers find instances of signals from planets  is what the option really tries to convey.

D)  computers learn to identify planets by finding  in data from the Kepler telescope instances of recorded signals from planets
 - Correct.  So far, this is the best option among the first four answer choices. Quick look at option (E) allows to conclude that (D) is correct.

E)  the identification of planets is learned by computers  by finding in data from the Kepler telescope instances of recorded signals from planets
 - Incorrect.  Once again, we have a hot issue with the meaning. Definitely,  computers learn to identify  is a much better option than  the identification of planets is learned...

joohwangie · Answer

The recently discovered planet Kepler-90i was found via machine learning, a form of artificial intelligence in which the identification of planets learned by computers is done from data by finding in the Kepler telescope instances of recorded signals from planets beyond our solar system, known as exoplanets.

A) the identification of planets learned by computers is done from data by finding in the Kepler telescope instances of recorded signals from planets  --passive voice, difficult to understand the context
 
B) computers learn to identify planets by finding in the Kepler telescope instances of recorded signals from planets -- what is "finding in the Kepler telescope"? what is in the telescope? a noun is missing
 
C) computers learn to identify planets by finding in data from the Kepler telescope instances of the  planet’s recorded signals from  -- confusing in the last part

D) computers learn to identify planets by finding in data from the Kepler telescope instances of recorded signals from planets  --clear; understandable, easy to follow, good flow

E) the identification of planets is learned by computers by finding in data from the Kepler telescope instances of recorded signals from planets -- same as A passive

Therefore, D

generis · Answer

I have posted the official explanation  HERE

VerbalBot · Answer

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The recently discovered planet Kepler-90i was found via machine learni

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GMAT Sentence Correction (SC - EA only) Questions

The recently discovered planet Kepler-90i was found via machine learni

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