Viewing test suite Center Embedding

Reference
"Wilcox E. Levy R. & Futrell R. (2019). Hierarchical representation in neural language models: Suppression and recovery of expectations."
Number of items
28
Models evaluated
88% (8/9)
Description
Center embedding, the ability to embed a phrase in the middle of another phrase of the same type, is a hallmark feature of natural language syntax. Center-embedding creates nested dependencies, which could pose a challenge for some language models. To succeed in generating expectations about how sentences will continue in the context of multiple center embedding, a model must maintain a representation not only of what words appear in the preceding context but also of the order of those words, and must predict that upcoming words occur in the appropriate order. In this test suite we use verb transitivity and subject/verb plausibility to test model capabilities in this respect.
Items for center_embed
Item
Condition
intro np_1 that det_2 np_2 verb1 verb2
Item Condition intro np_1 that det_2 np_2 verb1 verb2
1 plaus The painting that the artist painted deteriorated
1 implaus The painting that the artist deteriorated painted
2 implaus The storm that the captain subsided feared
2 plaus The storm that the captain feared subsided
3 plaus The girl that the bug frightened shouted
3 implaus The girl that the bug shouted frightened
4 plaus The baby that the woman held yelled
4 implaus The baby that the woman yelled held
5 plaus The soldier that the bullet wounded died
5 implaus The soldier that the bullet died wounded
6 plaus The storm that the scientist predicted intensified
6 implaus The storm that the scientist intensified predicted
7 plaus The convict that the cop arrested escaped
7 implaus The convict that the cop escaped arrested
8 plaus The computer that the secretary bought crashed
8 implaus The computer that the secretary crashed bought
9 plaus The floor that the maid swept cracked
9 implaus The floor that the maid cracked swept
10 plaus The yacht that the millionaires bought sank
10 implaus The yacht that the millionaires sank bought
11 plaus The shirt that the man bought ripped
11 implaus The shirt that the man ripped bought
12 plaus The water that the maid poured evaporated
12 implaus The water that the maid evaporated poured
13 plaus The building that the workers built collapsed
13 implaus The building that the workers collapsed built
14 plaus The bones that the doctor examined broke
14 implaus The bones that the doctor broke examined
15 plaus The building that the workers repaired deteriorated
15 implaus The building that the workers deteriorated repaired
16 plaus The ship that the workers built sank
16 implaus The ship that the workers sank built
17 plaus The horse that the boy rode bucked
17 implaus The horse that the boy bucked rode
18 plaus The water that the chef needed evaporated
18 implaus The water that the chef evaporated needed
19 plaus The tree that the old man cut fell
19 implaus The tree that the old man fell cut
20 plaus The letter that the author wrote arrived
20 implaus The letter that the author arrived wrote
21 plaus The glass that the athlete hit cracked
21 implaus The glass that the athlete cracked hit
22 plaus The bomb that the terrorist built exploded
22 implaus The bomb that the terrorist exploded built
23 plaus The meat that the man cooked burned
23 implaus The meat that the man burned cooked
24 plaus The sugar that the visitor bought dissolved
24 implaus The sugar that the visitor dissolved bought
25 plaus The pants that the woman bought ripped
25 implaus The pants that the woman ripped bought
26 plaus The toilet that the worker fixed clogged
26 implaus The toilet that the worker clogged fixed
27 plaus The window that the boy wiped shattered
27 implaus The window that the boy shattered wiped
28 plaus The child that the shadow frightened yelled
28 implaus The child that the shadow yelled frightened
Predictions for center_embed
Formula
Description
Formula Description
( (634,plaus/6,verb1) + (634,plaus/7,verb2) ) < ( (633,implaus/6,verb1) + (633,implaus/7,verb2) ) The sum of Verb1+Verb2 should be lower in the match condition than in the mismatch condition, where the verb plausibility matches a first-in-first-out ordering.