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loss 音标拼音: [l'ɔs] n.
U损失,丧失,遗失; U输,未获得,未保住; U减少,浪费,未能利用; C损失物 U损失,丧失,遗失; U输,未获得,未保住; U减少,浪费,未能利用; C损失物 loss损耗 loss损耗 损失 loss n 1: something that is lost; " the car was a total loss"; " loss of livestock left the rancher bankrupt" 2: gradual decline in amount or activity; " weight loss"; " a serious loss of business" 3: the act of losing someone or something; " everyone expected him to win so his loss was a shock" 4: the disadvantage that results from losing something; " his loss of credibility led to his resignation"; " losing him is no great deprivation" [ synonym: { loss}, { deprivation}] 5: the experience of losing a loved one; " he sympathized on the loss of their grandfather" 6: the amount by which the cost of a business exceeds its revenue; " the company operated at a loss last year"; " the company operated in the red last year" [ synonym: { loss}, { red ink}, { red}] [ ant: { gain}] 7: military personnel lost by death or capture [ synonym: { personnel casualty}, { loss}] 8: euphemistic expressions for death; " thousands mourned his passing" [ synonym: { passing}, { loss}, { departure}, { exit}, { expiration}, { going}, { release}] Loss \ Loss\ ( l[ o^] s; 115), n. [ AS. los loss, losing, fr. le[' i] san to lose. [ root] 127. See { Lose}, v. t.] 1. The act of losing; failure; destruction; privation; as, the loss of property; loss of money by gaming; loss of health or reputation. [ 1913 Webster] Assured loss before the match be played. -- Shak. [ 1913 Webster] 2. The state of losing or having lost; the privation, defect, misfortune, harm, etc., which ensues from losing. [ 1913 Webster] Though thou repent, yet I have still the loss. -- Shak [ 1913 Webster] 3. That which is lost or from which one has parted; waste; -- opposed to { gain} or { increase}; as, the loss of liquor by leakage was considerable. [ 1913 Webster] 4. The state of being lost or destroyed; especially, the wreck or foundering of a ship or other vessel. [ 1913 Webster] 5. Failure to gain or win; as, loss of a race or battle. [ 1913 Webster] 6. Failure to use advantageously; as, loss of time. [ 1913 Webster] 7. ( Mil.) Killed, wounded, and captured persons, or captured property. [ 1913 Webster] 8. ( Insurance) Destruction or diminution of value, if brought about in a manner provided for in the insurance contract ( as destruction by fire or wreck, damage by water or smoke), or the death or injury of an insured person; also, the sum paid or payable therefor; as, the losses of the company this year amount to a million of dollars. [ 1913 Webster] { To bear a loss}, to make a loss good; also, to sustain a loss without sinking under it. { To be at a loss}, to be in a state of uncertainty. Syn: Privation; detriment; injury; damage. [ 1913 Webster] 94 Moby Thesaurus words for " loss": ablation, annihilation, attrition, bankruptcy, bereavement, breakage, breakdown, collapse, confusion, consumption, corrosion, crack- up, crippling, damage, death, decrement, defeat, deliquescence, demise, denial, depletion, deprivation, deprivement, destruction, detriment, devastation, dilapidation, diminution, disablement, disadvantage, disappearance, disappointment, dispossession, disrepair, dissipation, dissolution, divestment, downfall, drawback, drubbing, dying, encroachment, erosion, exhaustion, extermination, extinction, failure, forfeit, forfeiture, handicap, harm, havoc, hobbling, hurt, hurting, impairment, impoverishment, incapacitation, infringement, injury, inroad, liability, losing, losings, loss of ground, losses, maiming, mayhem, mischief, mislaying, misplacement, misplacing, mutilation, passing, prejudice, privation, reduction, ruin, ruination, ruinousness, sabotage, sacrifice, scathe, shrinkage, sickening, spoiling, squandering, step backward, trouncing, wastage, waste, wasting, weakening, wear and tear Something (not a person) that loses; a situation in
which something is losing. Emphatic forms include "moby
loss", and "total loss", "complete loss". Common
interjections are "What a loss!" and "What a moby loss!"
Note that "moby loss" is OK even though **"moby loser" is not
used; applied to an abstract noun, moby is simply a magnifier,
whereas when applied to a person it implies substance and has
positive connotations.
Compare {lossage}.
(1995-04-19)
loss: n. Something ( not a person) that loses; a situation in which something is losing. Emphatic forms include moby loss, and total loss, complete loss. Common interjections are “ What a loss!” and “ What a moby loss!” Note that moby loss is OK even though ** moby loser is not used; applied to an abstract noun, moby is simply a magnifier, whereas when applied to a person it implies substance and has positive connotations. Compare lossage. LOSS, contracts. The deprivation of something which one had, which was either advantageous, agreeable or commodious. 2. In cases of partnership, the losses are in general borne by the partners equally, unless stipulations or circumstance' s manifest a different intention. Story, Partn. Sec. 24. But it is not essential that the partners should all share the losses. They may agree, that if there shall be no profits, but a loss, that the loss shall be borne by one or more of the partners exclusively, and that the others shall, inter se, be exempted from all liabilities for losses. Colly. Partn. 11; Gow, Partn. 9; 3 M. & Wels. 357; 5 Barn. & Ald. 954 Story, Partn. Sec. 23. 3. When a thing sold is lost by an accident, as by fire, the loss falls on the owner, res perit domino, and questions not unfrequently arise, as to whether the thing has been delivered and passed to the purchaser, or whether it remains still the property of the seller. See, on this subject, Delivery.
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- 深度学习的loss一般收敛到多少？ - 知乎
这个链接是回归问题的loss，本回答说一下分类问题的。 交叉熵 公式这里就不放了（手机打字不方便），可以看出，其实loss就是log(Pi)的平均值，Pi指的是预测ground truth的概率。所以，如果你希望预测概率超过0 5就好，那么loss就训练到log(0 5)。
- 损失函数｜交叉熵损失函数 - 知乎
Deng [4]在2019年提出了ArcFace Loss，并在论文里说了Softmax Loss的两个缺点：1、随着分类数目的增大，分类层的线性变化矩阵参数也随着增大；2、对于封闭集分类问题，学习到的特征是可分离的，但对于开放集人脸识别问题，所学特征却没有足够的区分性。
- 大模型优化利器：RLHF之PPO、DPO - 知乎
最终，我们可以得出 DPO 的 loss 如下所示： 这就是 DPO 的 loss。DPO 通过以上的公式转换把 RLHF 巧妙地转化为了 SFT，在训练的时候不再需要同时跑 4 个模型（Actor Model 、Reward Mode、Critic Model 和 Reference Model），而是只用跑 Actor 和 Reference 2 个模型。
- 请问MSE loss 大小多少才表示模型优化效果好呢？0. 01大概是什么水平？ - 知乎
主要看评价指标是什么，评价指标是检验模型好坏的标准之一（对，就是之一 如果你的评价指标就是mseloss，验证集的loss和训练集的loss相差不大（说明没有过拟合），而且你的loss是在可接受范围内（说明优化到位了），那模型效果完全可以接受。
- 神经网络模型train_loss下降，val_loss一直上升是什么原因？ - 知乎
train loss 不断上升，test loss不断上升，说明网络结构设计不当，训练超参数设置不当，数据集经过清洗等问题；（最不好的情况） train_loss 不断下降， test_loss 不断上升，和第2种情况类似说明网络过拟合了。
- 深度学习网络收敛之后的loss数值代表什么？ - 知乎
从loss_reg来看：可以找到一些训练样本的bbox的回归处于抖动状态，很难和gt完美贴合，实际上所有目标不太可能和所有gt完美贴合，这就会导致loss_reg的收敛值。如果因为类别正确，bbox的回归值导致这个bbox被判定为FP，就需要额外关注了。
- 深度学习当中train loss和valid loss之间的关系？ - 知乎
val loss是在验证集上的损失，衡量的是在未见过数据上的拟合能力，也可以说是 泛化能力 。模型的真正效果应该用val loss来衡量。 模型的真正效果应该用val loss来衡量。
- 深度学习中loss值可以为负吗？ - 知乎
实际训练过程中可能出现这种现象，不过我建议用 logsoftnax() 处理一下，这样画loss曲线更好看。。。。。。 不过之前改算法的时候发现加log后准确率会差的较多，所以我是在loss输出前log一下。 顺便说一下，我训练时的衡量值是 mIoU ，如果你把loss作为目标函数
- GAN生成对抗网络D_loss和G_loss到底应该怎样变化？ - 知乎
而成功的训练中，由于要达到G欺骗D的目的，所以D的Loss是不会收敛的，在G欺骗D的情况下，D的LOSS会在0 5左右。 如果出现了G上升D下降的情况，说明G的生成能力过弱，D很容易分辨出G的好坏，发生了GAN中常见的 模式坍塌 问题。
- 如何看待 Google 最新开源的 Gemma-3 系列大模型？ - 知乎
Google开源第三代Gemma-3系列模型：支持多模态、最多128K输入，其中Gemma 3-27B在大模型匿名竞技场得分超…
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