TL;DR Treating spatial reasoning as a classification problem over finite candidates, instead of generating text, speeds up a VLM by up to 5.6x while also improving accuracy.
Title: MJev-Spatial: System One Spatial Intelligence via Native Attention Matching
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Here are the key points.
・🎯 Choices, numeric values, and point coordinates are all unified as classification over a finite candidate set
・🧠 No new prediction head is added - it reuses the model's existing query-key attention projections for scoring
・📐 Point prediction uses a 3x3 grid refined through 3 rounds of re-cropping and re-encoding
・🚀 160.6ms average latency on a B200 GPU, 2.5x faster than the best autoregressive baseline and 5.6x faster than the base model
・📊 65.64% average across 12 benchmarks, beating Qwen3-VL-8B and others, ranking #
1# on 7 of them
・🔢 Surprisingly, coarser distance bins actually beat finer ones in accuracy
・🌲 A probability-tree decoding scheme extends the single-point predictor to multi-point prediction with no extra training
What's interesting is how this shift away from text generation toward a more "intuitive" classification approach delivers both speed and accuracy at once.
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VLM# #
SpatialReasoning#