2results about How to "Avoid conversion errors" patented technology

This invention discloses a paragraph-level generated text detection method based on deep maximum mean difference (MDD) metric. The method includes: modeling generated text detection as a nonparametric two-sample test problem; designing a deep composite kernel to fuse shallow syntactic features and deep semantic features; training a deep kernel network with the goal of maximizing unbiased estimation of test power; in the testing phase, introducing a Wild Bootstrap mechanism to generate random weight sequences with autoregressive structures; performing a weighted quadratic transformation on the MMD kernel difference matrix; preserving paragraph sentence sequence correlation; accurately estimating the null distribution of the test statistic; and completing the detection by comparing the observed statistic with the test threshold. This method improves sensitivity to high-dimensional semantic differences, alleviates the problem of decreased test power caused by sequence correlation, and can efficiently distinguish between human and AI-generated text. It is suitable for generated text detection in scenarios such as news and academic writing.

The utility model discloses a fixed pollution source waste gas sampling port sealing device, including waste gas sampling gun, the fixed connection of the outer wall of the sampling pipe department of waste gas sampling gun has the threaded sleeve pole, the outer wall of threaded sleeve pole has seted up the thread, the outer wall threaded connection of threaded sleeve pole has the threaded sleeve piece, and the one side of inflatable ring is attached with the annular protruding department of threaded sleeve piece, the other side of inflatable ring is provided with the trachea, and the inner bag of trachea and inflatable ring are linked together. The device is applied to the sampling link of waste gas sampling gun, when the barrel department of waste gas sampling gun is inserted into the fixed pollution source pipeline, through the trachea of inflatable equipment connection inflatable ring one end, the input air of it makes it expand, seals the pipeline mouth, avoids the outside air and will flow into the pipeline through the gap reversely, improves the sealing effect is strong, avoids and will cause the discharge concentration calculation because of oxygen content conversion error, makes the actual emission of pollutant be underestimated, ensures the real and reliable of waste gas sampling data.