Text Classification
PEFT
Safetensors
English
decision-index
decision-model
lora
vllm
multiple-choice
calibration
gemma4
Eval Results (legacy)
Instructions to use 1000luca/FlexDM-LoRA-v2.1 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
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- PEFT
How to use 1000luca/FlexDM-LoRA-v2.1 with PEFT:
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File size: 28,381 Bytes
09c13a5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 | """Letter readout of a stock chat model for the Decision Index. Nothing is generated.
The baseline prompt is the "chat layout" of decider-ai 1.6.0 (Apache-2.0, github.com/Mapika/decider), which is how the
board entry "Decider chat · Gemma-4-31B" reads the stock model. One row per question:
<chat template head>Context:\n<state>\n\nQuestion: <instructions>\nOptions:\n(A) ...\n(B) ...<template tail, thinking off>Answer: (
The answer is read at the final " (": the last hidden state there is multiplied by the output-embedding rows of the
labels of the question's options, in float32, and the result goes through a softmax at a temperature set by the number
of options. These are the logits before Gemma's final soft cap (30 * tanh(x / 30)); the capped logits the model returns
squeeze every confident answer into the same narrow band below 30. Up to 10 options are labelled A..J; above that every
option gets its own single-token label (A..Z, then two-letter strings), up to 255.
By default the state is read once per request and the request's questions are read side by side after it in one pass
(pack_questions); each question sees only the state and itself, so this equals one full row per question up to bf16
rounding. With read_twice the user turn is written twice, as shisa-ai/shisa-de-2 does:
Context:\n<state>\n\nQuestion: ...\nOptions: ...\n\nRead the same input again before answering:\nContext:\n<state>\n\nQuestion: ...\nOptions: ...
so the second copy of the state is read with the question and its options already in view. Reading twice costs about
twice the tokens, so it can be limited: twice_max_tokens reads twice only requests of at most that many tokens read once
(state plus all its questions), and reread_below re-reads, written twice, the questions of the other requests whose most
likely option has a probability below that value after the first read; the state stays cached between the two reads. A
row that written twice would pass the token limit is read once.
python -m decision_index run --engine jevlab.reader:Reader --rows sample.jsonl.gz --out runs/reader-sample
"""
import json
import math
import string
from decision_index.engines.base import Engine, Unsupported
LETTERS = "ABCDEFGHIJ"
MAX_OPTIONS = 255
ANNOTATE_MIN = 8
NOUL_WITHOUT_INSTRUCTIONS = "Which answer fits the context?"
READ_AGAIN = "\n\nRead the same input again before answering:\n"
QUESTIONS_HEAD = "Questions that will be asked about the context:\n"
QUESTIONS_ITEM = "- "
LAYOUTS = ("decider", "header")
SENTINEL = "@@JEVLAB_USER_CONTENT@@"
THINKING_BLOCKS = (("<think>\n", "</think>\n\n"), ("<think>", "</think>\n\n"), ("<|channel>thought\n", "<channel|>"))
def _txt(v):
return v if isinstance(v, str) else json.dumps(v, ensure_ascii=False)
def _flag(v):
return v.strip().lower() in ("1", "true", "yes", "on") if isinstance(v, str) else bool(v)
def annotate_indices(x, min_len=ANNOTATE_MIN):
"""Write each element's position into long arrays, so a question naming `records[47]` is a lookup, not a count."""
if isinstance(x, list):
if len(x) >= min_len:
return [{"_index": i, **annotate_indices(v, min_len)} if isinstance(v, dict) else {"_index": i, "value": annotate_indices(v, min_len)} for i, v in enumerate(x)]
return [annotate_indices(v, min_len) for v in x]
if isinstance(x, dict):
return {k: annotate_indices(v, min_len) for k, v in x.items()}
return x
def render_state(state):
return state if isinstance(state, str) else json.dumps(annotate_indices(state), ensure_ascii=False)
def render_question(q):
"""-> (question text, option texts, option keys). A noul question is the two options no/yes, keyed False/True."""
kind, crit, raw = q["type"], q.get("criteria"), q.get("instructions", "")
if kind == "choice":
if isinstance(crit, (list, tuple)):
crit = {str(c): None for c in crit}
if not isinstance(crit, dict) or not 2 <= len(crit) <= MAX_OPTIONS:
raise Unsupported(f"options per choice: a map of 2..{MAX_OPTIONS} options is required")
keys = list(crit)
return _txt(raw), [k if crit[k] in (None, "") else f"{k}: {_txt(crit[k])}" for k in keys], keys
if kind == "noul":
crit = crit if isinstance(crit, dict) else {}
no, yes = crit.get("false", crit.get(False)), crit.get("true", crit.get(True))
text = NOUL_WITHOUT_INSTRUCTIONS if raw in (None, "") else _txt(raw)
return text, ["no" if no in (None, "") else f"no: {_txt(no)}", "yes" if yes in (None, "") else f"yes: {_txt(yes)}"], [False, True]
raise Unsupported("Unsupported question type " + str(kind))
class Layout:
"""Token ids of the prompt rows. Needs only the tokenizer."""
def __init__(self, tok, system=None):
if not getattr(tok, "chat_template", None):
raise ValueError("the tokenizer has no chat template")
self.tok, self.system = tok, system or None
kw = {"enable_thinking": False} if "enable_thinking" in tok.chat_template else {}
turns = ([{"role": "system", "content": self.system}] if self.system else []) + [{"role": "user", "content": SENTINEL}]
head, tail = tok.apply_chat_template(turns, tokenize=False, add_generation_prompt=True, **kw).split(SENTINEL)
if self.system and self.system not in head:
raise ValueError("the chat template dropped the system turn")
for opened, closed in THINKING_BLOCKS:
if tail.endswith(opened):
tail += closed
self.head_text, self.tail_text = head, tail
self.head, self.tail = self._enc(head), self._enc(tail)
self.answer = self._enc("Answer: (")
self.open = self._enc("\n(")
names = list(string.ascii_uppercase) + [a + b for a in string.ascii_uppercase for b in string.ascii_uppercase]
single = [(n, t[0]) for n, t in ((n, self._enc(n)) for n in names) if len(t) == 1][:MAX_OPTIONS]
self.labels, self.label_ids = [n for n, _ in single], [i for _, i in single]
if len(self.label_ids) != MAX_OPTIONS or len(set(self.label_ids)) != MAX_OPTIONS:
raise ValueError("the tokenizer does not have 255 distinct single-token labels")
# the labels must be what the model would write next at the answer slot, and the slot must not merge with the template
for n, i in single[: len(LETTERS)]:
if self._enc("Answer: (" + n) != self.answer + [i]:
raise ValueError(f"the label {n!r} is not one token after 'Answer: ('")
if self._enc(tail + "Answer: (") != self.tail + self.answer:
raise ValueError("the chat template tail merges with the answer slot")
def _enc(self, text):
return self.tok.encode(text, add_special_tokens=False)
@staticmethod
def listing(texts):
"""The header layout's list of every question of the request, placed before the state."""
return QUESTIONS_HEAD + "\n".join(QUESTIONS_ITEM + t for t in texts) + "\n\n"
def context(self, state, texts=None):
"""Ids up to the end of the state. With `texts` (the request's question texts) the header layout: the list of
questions, then the state, each part encoded on its own as wcole3/jev-brain builds it."""
ids = self.head + (self._enc(self.listing(texts)) if texts is not None else [])
return ids + self._enc("Context:\n" + render_state(state))
def again(self, state, texts=None):
"""Ids that start the second copy of the user turn, up to the end of its state."""
return self._enc(READ_AGAIN + (self.listing(texts) if texts is not None else "") + "Context:\n" + render_state(state))
def question(self, text, options, again=None):
"""Ids after the context: the question, its labelled options, the template tail and the answer slot. With `again`
(from again()), the user turn is written a second time before the tail."""
ids = self._enc(f"\n\nQuestion: {text}\nOptions:")
if len(options) <= len(LETTERS):
ids += self._enc("".join(f"\n({LETTERS[j]}) {o}" for j, o in enumerate(options)))
else:
for j, o in enumerate(options):
ids += self.open + [self.label_ids[j]] + self._enc(f") {o}")
if again:
ids = ids + again + ids
return ids + self.tail + self.answer
class Reader(Engine):
name = "jevlab-reader"
latency = "In-process request wall time including prompt construction and reuse of the state's KV cache across the questions of one request; excludes model loading."
def __init__(self, model="google/gemma-4-31B-it", revision="842da3794eaa0b77d5f08bae87a17459d91ff475", device=None, dtype="bfloat16", temperature=10.124, temperature_log_slope=-1.633,
max_tokens=32768, chunk_tokens=8192, cache_prefix=False, cudnn_sdp=False, pack_questions=True, pack_tokens=4096, read_twice=False, twice_max_tokens=0, reread_below=0.0, reverse_below=0.0, layout="decider", attn_block=512, **options):
super().__init__(**options)
import torch
from transformers import AutoModelForCausalLM, AutoTokenizer
self.torch = torch
self.device = device or ("cuda" if torch.cuda.is_available() else "cpu")
# decider-ai reports that on Blackwell with torch 2.14 the cuDNN attention backend returns wrong output when a suffix
# attends to a cached prefix (engine.set_attention_backend_policy). Our own runs came out identical with it on and
# off, so this is a precaution, not a measured fix.
if not cudnn_sdp and hasattr(torch.backends.cuda, "enable_cudnn_sdp"):
torch.backends.cuda.enable_cudnn_sdp(False)
self.tok = AutoTokenizer.from_pretrained(model, revision=revision)
self.layout = Layout(self.tok)
self.model = AutoModelForCausalLM.from_pretrained(model, revision=revision, dtype=getattr(torch, dtype)).to(self.device).eval()
self.decoder = self.model.model # everything below the output layer
head = self.model.get_output_embeddings()
if head.bias is not None:
raise ValueError("the output layer has a bias; the label readout assumes it has none")
self.label_rows = head.weight.detach()[torch.tensor(self.layout.label_ids, device=self.device)].float()
self.attn_block = int(attn_block)
if self.attn_block > 0:
from jevlab.attention import use_blocked_attention
use_blocked_attention(self.model, self.attn_block)
self.model_id = model
# T(n) = temperature + temperature_log_slope * ln(n options). The defaults are the fit published for the board entry
# "Decider chat · Gemma-4-31B" (Mapika/decision-index-results README); they are here to reproduce that entry.
self.temperature, self.temperature_log_slope = float(temperature), float(temperature_log_slope)
self.limit = int(max_tokens)
self.chunk = int(chunk_tokens)
self.cache_prefix = _flag(cache_prefix)
self.pack, self.pack_tokens = _flag(pack_questions), int(pack_tokens)
self.read_twice = _flag(read_twice)
self.twice_max_tokens, self.reread_below = int(twice_max_tokens), float(reread_below)
self.reverse_below = float(reverse_below)
if layout not in LAYOUTS:
raise ValueError(f"layout must be one of {LAYOUTS}, not {layout!r}")
self.header = layout == "header"
cfg = self.model.config.get_text_config()
self.layer_types, self.window = set(cfg.layer_types), getattr(cfg, "sliding_window", None)
self.cache, self.cached_ids = None, []
self.provenance = {
"kind": "inference technique",
"repo": model,
"revision": revision or getattr(self.model.config, "_commit_hash", None),
"device": self.device,
"dtype": dtype,
"temperature": self.temperature,
"temperature_log_slope": self.temperature_log_slope,
"max_row_tokens": self.limit,
"cudnn_sdp": bool(cudnn_sdp),
"pack_questions": self.pack,
"read_twice": self.read_twice,
"twice_max_tokens": self.twice_max_tokens,
"reread_below": self.reread_below,
"reverse_below": self.reverse_below,
"layout": "header" if self.header else "decider",
"attention": f"sdpa in query blocks of {self.attn_block}, each over the span of keys its mask allows" if self.attn_block > 0 else "sdpa",
"policy": ("The state is preceded by the list of every question of the request ('Questions that will be asked about the context:'), "
"the header layout of wcole3/jev-brain. " if self.header else "")
+ "One row per question in the model's chat template with thinking off, ending at 'Answer: ('; the last hidden state there times the "
"output-embedding rows of the option labels (float32, before the final soft cap) goes through a softmax. Options keep the request's "
"order. Rows above the token limit are refused, never cut."
+ (" The user turn (state, question, options) is written twice, joined by 'Read the same input again before answering:'"
+ (f", in requests of at most {self.twice_max_tokens} tokens read once" if self.twice_max_tokens > 0 else "") + "." if self.read_twice else "")
+ (f" Questions of the other requests whose most likely option has probability below {self.reread_below} are read again, written twice "
"the same way, after the first read." if self.reread_below > 0 else "")
+ (f" A question whose most likely option then has probability below {self.reverse_below} is read once more with its options in "
"reverse order, and the two distributions are averaged." if self.reverse_below > 0 else "")
+ (" The state is read once per request; the questions of the request are read side by side after it in one pass, each seeing only "
"the state and itself." if self.pack else ""),
}
if self.pack:
self.latency = "In-process request wall time including prompt construction; the state is read once and the request's questions are read together after it; excludes model loading."
elif not self.cache_prefix:
self.latency = "In-process request wall time including prompt construction; every question row is read in full; excludes model loading."
def runtime(self):
torch = self.torch
import transformers
info = {"torch": torch.__version__, "transformers": transformers.__version__, "device": self.device}
if self.device == "cuda":
info.update(cuda=torch.version.cuda, gpu=torch.cuda.get_device_name())
return info
def synchronize(self):
if self.device == "cuda":
self.torch.cuda.synchronize()
def reset_cache(self):
self.cache, self.cached_ids = None, []
def _forward(self, ids, chunk):
"""Run `ids`, reusing the cached prefix it shares with the previous row. -> (hidden state at the last position, cached prefix length)."""
torch = self.torch
from transformers import DynamicCache
p = 0
if self.cache_prefix and self.cache is not None:
n = min(len(ids) - 1, len(self.cached_ids))
while p < n and ids[p] == self.cached_ids[p]:
p += 1
if p == 0:
self.cache = DynamicCache()
elif len(self.cached_ids) > p:
self.cache.crop(p - len(self.cached_ids))
self.cached_ids = ids[:p]
with torch.inference_mode():
for s in range(p, len(ids), chunk):
piece = ids[s:s + chunk]
out = self.decoder(input_ids=torch.tensor([piece], device=self.device), attention_mask=torch.ones(1, s + len(piece), dtype=torch.long, device=self.device),
past_key_values=self.cache, use_cache=True)
self.cache = out.past_key_values
self.cached_ids = ids[:s + len(piece)]
return out.last_hidden_state[0, -1], p
def _pack_masks(self, p, lengths):
"""Masks for questions laid side by side after a cached prefix of p tokens. Each question token sees the prefix and
the earlier tokens of its own question, at the positions it would have in its own row; on sliding-window layers only
keys less than `window` positions back, the rule transformers applies to a full row (masking_utils.sliding_window_overlay)."""
torch, dev = self.torch, self.device
own = torch.repeat_interleave(torch.arange(len(lengths), device=dev), torch.tensor(lengths, device=dev))
qpos = p + torch.cat([torch.arange(m, device=dev) for m in lengths])
kpos = torch.cat([torch.arange(p, device=dev), qpos])
kown = torch.cat([torch.full((p,), -1, device=dev), own])
allowed = (kown[None, :] == -1) | ((kown[None, :] == own[:, None]) & (kpos[None, :] <= qpos[:, None]))
masks = {}
for t in self.layer_types:
if t == "full_attention":
masks[t] = allowed[None, None]
elif t == "sliding_attention":
masks[t] = (allowed & (qpos[:, None] - kpos[None, :] < self.window))[None, None]
else:
raise ValueError(f"no packed mask for layer type {t!r}")
return masks, qpos
def _packed(self, p, pieces):
"""Hidden states at the last token of each piece, the pieces read side by side after the cached prefix of p tokens."""
torch = self.torch
lengths = [len(x) for x in pieces]
masks, qpos = self._pack_masks(p, lengths)
ids = torch.tensor([[t for x in pieces for t in x]], device=self.device)
ends = torch.tensor(lengths, device=self.device).cumsum(0) - 1
try:
with torch.inference_mode():
out = self.decoder(input_ids=ids, attention_mask=masks, position_ids=qpos[None], past_key_values=self.cache, use_cache=True)
return out.last_hidden_state[0, ends]
finally:
extra = self.cache.get_seq_length() - p
if extra > 0:
self.cache.crop(-extra)
def _joint(self, ctx, pieces):
"""Hidden states at the last token of each piece, the state and all pieces read in one pass: the state causally,
each piece after it seeing the state and itself. The state's keys and values stay in the cache afterwards."""
torch, dev = self.torch, self.device
from transformers import DynamicCache
p, lengths = len(ctx), [len(x) for x in pieces]
own = torch.cat([torch.full((p,), -1, device=dev), torch.repeat_interleave(torch.arange(len(lengths), device=dev), torch.tensor(lengths, device=dev))])
pos = torch.cat([torch.arange(p, device=dev)] + [p + torch.arange(m, device=dev) for m in lengths])
allowed = (pos[None, :] <= pos[:, None]) & ((own[None, :] == -1) | (own[None, :] == own[:, None]))
masks = {}
for t in self.layer_types:
if t == "full_attention":
masks[t] = allowed[None, None]
elif t == "sliding_attention":
masks[t] = (allowed & (pos[:, None] - pos[None, :] < self.window))[None, None]
else:
raise ValueError(f"no packed mask for layer type {t!r}")
ids = torch.tensor([ctx + [t for x in pieces for t in x]], device=dev)
ends = p + torch.tensor(lengths, device=dev).cumsum(0) - 1
self.cache, self.cached_ids = DynamicCache(), []
with torch.inference_mode():
out = self.decoder(input_ids=ids, attention_mask=masks, position_ids=pos[None], past_key_values=self.cache, use_cache=True)
extra = self.cache.get_seq_length() - p
if extra > 0:
self.cache.crop(-extra)
self.cached_ids = list(ctx)
return out.last_hidden_state[0, ends]
def _extend(self, p, piece, chunk):
"""Hidden state at the last token of one long piece, read in chunks after the cached prefix of p tokens."""
torch = self.torch
try:
with torch.inference_mode():
for s in range(0, len(piece), chunk):
part = piece[s:s + chunk]
out = self.decoder(input_ids=torch.tensor([part], device=self.device), attention_mask=torch.ones(1, p + s + len(part), dtype=torch.long, device=self.device),
past_key_values=self.cache, use_cache=True)
return out.last_hidden_state[0, -1]
finally:
extra = self.cache.get_seq_length() - p
if extra > 0:
self.cache.crop(-extra)
def packed_label_logits(self, ctx, pieces, ns, reuse=False):
"""float32 label logits of every question of a request: the state once, then the questions in packs of about
pack_tokens tokens. A question longer than that is read on its own, in chunks. A request of at most pack_tokens
tokens in all is read in one pass. With reuse, a state still cached from the first read of the same request is not
read again."""
budget = self.pack_tokens
while True:
try:
if not reuse and not self.cache_prefix and len(ctx) + sum(map(len, pieces)) <= budget:
hidden = self._joint(ctx, pieces)
return [(self.label_rows[:n] @ h.float()).cpu() for h, n in zip(hidden, ns)], 0
if reuse and self.cache is not None and self.cached_ids == ctx and self.cache.get_seq_length() == len(ctx):
p0 = len(ctx)
else:
_, p0 = self._forward(ctx, self.chunk)
p = len(ctx)
hidden, group, size = {}, [], 0
for i, piece in enumerate(pieces):
if len(piece) > budget:
hidden[i] = self._extend(p, piece, budget)
continue
if group and size + len(piece) > budget:
hidden.update(zip(group, self._packed(p, [pieces[j] for j in group])))
group, size = [], 0
group.append(i)
size += len(piece)
if group:
hidden.update(zip(group, self._packed(p, [pieces[j] for j in group])))
return [(self.label_rows[:n] @ hidden[i].float()).cpu() for i, n in enumerate(ns)], p0
except self.torch.OutOfMemoryError:
self.reset_cache()
if self.device == "cuda":
self.torch.cuda.empty_cache()
if budget <= 256:
raise
budget //= 2
except Exception:
self.reset_cache()
raise
def label_logits(self, ids, n):
"""float32 logits (before the soft cap) of the first n labels at the answer slot of one row."""
torch = self.torch
chunk = self.chunk
while True:
try:
hidden, p = self._forward(ids, chunk)
return (self.label_rows[:n] @ hidden.float()).cpu(), p
except torch.OutOfMemoryError:
self.reset_cache()
if self.device == "cuda":
torch.cuda.empty_cache()
if chunk <= 512:
raise
chunk //= 2
except Exception:
self.reset_cache()
raise
def _read(self, ctx, pieces, ns, reuse=False):
"""-> [(float32 label logits, cached prefix tokens)] for the pieces after ctx."""
if self.pack:
logits, p0 = self.packed_label_logits(ctx, pieces, ns, reuse)
return [(x, p0 if i == 0 else len(ctx)) for i, x in enumerate(logits)]
return [self.label_logits(ctx + piece, n) for piece, n in zip(pieces, ns)]
def _probs(self, logits, n):
t = max(self.temperature + self.temperature_log_slope * math.log(n), 0.05)
return self.torch.softmax(logits.double() / t, -1).tolist()
def __call__(self, state, questions):
rendered = [(key, q["type"], *render_question(q)) for key, q in questions.items()]
texts = [text for _, _, text, _, _ in rendered] if self.header else None
ctx = self.layout.context(state, texts)
again = self.layout.again(state, texts) if self.read_twice or self.reread_below > 0 else None
rows = []
for key, kind, text, options, keys in rendered:
rows.append((key, kind, self.layout.question(text, options), self.layout.question(text, options, again) if again else None, keys))
# a request whose rows written twice would pass the token limit is read once
fits = [again is not None and len(ctx) + len(twice) <= self.limit for _, _, _, twice, _ in rows]
once_tokens = len(ctx) + sum(len(once) for _, _, once, _, _ in rows)
whole = self.read_twice and all(fits) and (self.twice_max_tokens <= 0 or once_tokens <= self.twice_max_tokens)
first = [twice if whole else once for _, _, once, twice, _ in rows]
for piece in first:
if len(ctx) + len(piece) > self.limit:
raise Unsupported(f"maximum context length: a row of {len(ctx) + len(piece)} tokens exceeds the declared limit of {self.limit}")
ns = [len(keys) for *_, keys in rows]
read = self._read(ctx, first, ns)
pieces = list(first)
reread = self.reread_below > 0 and not whole
unsure = [i for i, ((logits, _), n) in enumerate(zip(read, ns)) if reread and fits[i] and max(self._probs(logits, n)) < self.reread_below]
firsts = {}
if unsure:
again_read = self._read(ctx, [rows[i][3] for i in unsure], [ns[i] for i in unsure], reuse=True)
for i, (logits, _) in zip(unsure, again_read):
firsts[i] = read[i][0]
read[i] = (logits, len(ctx))
pieces[i] = rows[i][3]
probs = [self._probs(logits, n) for (logits, _), n in zip(read, ns)]
flipped = {}
if self.reverse_below > 0:
low = [i for i, pr in enumerate(probs) if max(pr) < self.reverse_below]
if low:
twice = [whole or i in firsts for i in low]
rev = [self.layout.question(rendered[i][2], rendered[i][3][::-1], again if t else None) for i, t in zip(low, twice)]
for i, piece in zip(low, rev):
if len(ctx) + len(piece) > self.limit:
raise Unsupported(f"maximum context length: a row of {len(ctx) + len(piece)} tokens exceeds the declared limit of {self.limit}")
for i, (logits, _) in zip(low, self._read(ctx, rev, [ns[i] for i in low], reuse=True)):
back = self._probs(logits, ns[i])[::-1] # reversed positions back to the caller's order
flipped[i] = logits
probs[i] = [(a + b) / 2 for a, b in zip(probs[i], back)]
answers, raw = {}, {}
for i, ((key, kind, _, _, keys), (logits, p)) in enumerate(zip(rows, read)):
raw[key] = {"label_logits": [round(x, 4) for x in logits.tolist()], "prompt_tokens": len(ctx) + len(pieces[i]), "cached_prefix_tokens": p,
"read_twice": whole or i in firsts}
if i in firsts:
raw[key]["first_label_logits"] = [round(x, 4) for x in firsts[i].tolist()]
if i in flipped:
raw[key]["reversed_label_logits"] = [round(x, 4) for x in flipped[i].tolist()]
probs_i = probs[i]
if kind == "noul":
answers[key] = {"type": "noul", "noul": probs_i[1]}
else:
answers[key] = {"type": "choice", "choice": keys[max(range(len(keys)), key=probs_i.__getitem__)], "probabilities": dict(zip(keys, probs_i))}
return {"model": self.model_id, "answers": answers, "usage": {"input_tokens": sum(v["prompt_tokens"] for v in raw.values())}}, raw
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