* add translations for API reference entries

* add translation for visualization API

source/locale/zh_CN/LC_MESSAGES/reference/integration.po

@@ -81,7 +81,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:26:<autosummary>:1
 msgid "AllenNLP extension to use optuna with Jsonnet config file."
-msgstr ""
+msgstr "为了让 Jsonnet 配置文件在 Optuna 中可用的 AllenNLP 扩展。"
 
 #: ../../source/reference/integration.rst:26:<autosummary>:1
 msgid ""
@@ -93,7 +93,7 @@ msgstr ""
 msgid ""
 "Save JSON config file after updating with parameters from the best trial "
 "in the study."
-msgstr ""
+msgstr "保存 study 中最佳 trial 的参数更新到 JSON 配置文件。"
 
 #: ../../source/reference/integration.rst:26:<autosummary>:1
 msgid ""
@@ -103,7 +103,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:26:<autosummary>:1
 msgid "AllenNLP callback to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 AllenNLP 回调函数。"
 
 #: ../../source/reference/integration.rst:28
 msgid "BoTorch"
@@ -119,14 +119,15 @@ msgstr ""
 msgid ""
 "A sampler that uses BoTorch, a Bayesian optimization library built on top"
 " of PyTorch."
-msgstr ""
+msgstr "采用 BoTorch 的采样器。BoTorch 是一个建立在 PyTorch 上的贝叶斯优化库。"
 
 #: ../../source/reference/integration.rst:38:<autosummary>:1
 msgid ""
 ":obj:`optuna.integration.botorch.qei_candidates_func "
 "<optuna.integration.botorch.qei_candidates_func>`"
 msgstr ""
 
+# TODO: maybe we should not translate these terminology parts
 #: ../../source/reference/integration.rst:38:<autosummary>:1
 msgid "Quasi MC-based batch Expected Improvement (qEI)."
 msgstr ""
@@ -165,7 +166,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:47:<autosummary>:1
 msgid "Catalyst callback to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 Catalyst 回调。"
 
 #: ../../source/reference/integration.rst:49
 msgid "Chainer"
@@ -179,7 +180,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:57:<autosummary>:1
 msgid "Chainer extension to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 Chainer 扩展。"
 
 #: ../../source/reference/integration.rst:57:<autosummary>:1
 msgid ""
@@ -191,7 +192,7 @@ msgstr ""
 msgid ""
 "A wrapper of :class:`~optuna.study.Study` to incorporate Optuna with "
 "ChainerMN."
-msgstr ""
+msgstr "一个将 Optuna 并入 CHainerMN 的 :class:`~optuna.study.Study` wrapper."
 
 #: ../../source/reference/integration.rst:59
 msgid "fast.ai"
@@ -205,7 +206,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:68:<autosummary>:1
 msgid "FastAI callback to prune unpromising trials for fastai."
-msgstr ""
+msgstr "用于清除 FastAI 中无望 trial 的回调函数。"
 
 #: ../../source/reference/integration.rst:68:<autosummary>:1
 msgid ""
@@ -235,7 +236,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:77:<autosummary>:1
 msgid "Keras callback to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 Keras 回调函数。"
 
 #: ../../source/reference/integration.rst:79
 msgid "LightGBM"
@@ -249,7 +250,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:89:<autosummary>:1
 msgid "Callback for LightGBM to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 LightGBM 回调函数。"
 
 #: ../../source/reference/integration.rst:89:<autosummary>:1
 msgid ""
@@ -259,7 +260,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:89:<autosummary>:1
 msgid "Wrapper of LightGBM Training API to tune hyperparameters."
-msgstr ""
+msgstr "用于超参数调参的 LightGBM training API 的 wrapper."
 
 #: ../../source/reference/integration.rst:89:<autosummary>:1
 msgid ""
@@ -269,7 +270,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:89:<autosummary>:1
 msgid "Hyperparameter tuner for LightGBM."
-msgstr ""
+msgstr "用于 LightGBM 的超参数调参器。"
 
 #: ../../source/reference/integration.rst:89:<autosummary>:1
 msgid ""
@@ -279,7 +280,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:89:<autosummary>:1
 msgid "Hyperparameter tuner for LightGBM with cross-validation."
-msgstr ""
+msgstr "带有交叉验证的、用于 LightGBM 的超参数调参器。"
 
 #: ../../source/reference/integration.rst:91
 msgid "MLflow"
@@ -293,7 +294,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:98:<autosummary>:1
 msgid "Callback to track Optuna trials with MLflow."
-msgstr ""
+msgstr "用 MLflow 来追踪 Optuna trial 的回调函数。"
 
 #: ../../source/reference/integration.rst:100
 msgid "MXNet"
@@ -307,7 +308,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:107:<autosummary>:1
 msgid "MXNet callback to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 MXNet 回调函数。"
 
 #: ../../source/reference/integration.rst:109
 msgid "pycma"
@@ -319,15 +320,15 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:117:<autosummary>:1
 msgid "A Sampler using cma library as the backend."
-msgstr ""
+msgstr "使用 cma 库作为后端的采样器。"
 
 #: ../../source/reference/integration.rst:117:<autosummary>:1
 msgid ":obj:`optuna.integration.CmaEsSampler <optuna.integration.CmaEsSampler>`"
 msgstr ""
 
 #: ../../source/reference/integration.rst:117:<autosummary>:1
 msgid "Wrapper class of PyCmaSampler for backward compatibility."
-msgstr ""
+msgstr "用于向后兼容的 PyCmaSampler wrapper 类。"
 
 #: ../../source/reference/integration.rst:119
 msgid "PyTorch"
@@ -341,7 +342,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:127:<autosummary>:1
 msgid "PyTorch Ignite handler to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 PyTorch Ignite handler。"
 
 #: ../../source/reference/integration.rst:127:<autosummary>:1
 msgid ""
@@ -351,7 +352,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:127:<autosummary>:1
 msgid "PyTorch Lightning callback to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 PyTorch Lighting 回调函数。"
 
 #: ../../source/reference/integration.rst:129
 msgid "scikit-learn"
@@ -365,7 +366,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:136:<autosummary>:1
 msgid "Hyperparameter search with cross-validation."
-msgstr ""
+msgstr "带有交叉验证的超参数搜索。"
 
 #: ../../source/reference/integration.rst:138
 msgid "scikit-optimize"
@@ -377,7 +378,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:145:<autosummary>:1
 msgid "Sampler using Scikit-Optimize as the backend."
-msgstr ""
+msgstr "以  Scikit-Optimize 为后端的 sampler。"
 
 #: ../../source/reference/integration.rst:147
 msgid "skorch"
@@ -391,7 +392,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:154:<autosummary>:1
 msgid "Skorch callback to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 Skorch 回调函数。"
 
 #: ../../source/reference/integration.rst:156
 msgid "TensorFlow"
@@ -405,7 +406,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:165:<autosummary>:1
 msgid "Callback to track Optuna trials with TensorBoard."
-msgstr ""
+msgstr "使用 TensorBoard 追踪 Optuna trial 的回调函数。"
 
 #: ../../source/reference/integration.rst:165:<autosummary>:1
 msgid ""
@@ -415,7 +416,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:165:<autosummary>:1
 msgid "TensorFlow SessionRunHook to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 TensorFlow SessionRunHook 钩子函数。"
 
 #: ../../source/reference/integration.rst:165:<autosummary>:1
 msgid ""
@@ -425,7 +426,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:165:<autosummary>:1
 msgid "tf.keras callback to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 tf.keras 回调函数。"
 
 #: ../../source/reference/integration.rst:167
 msgid "XGBoost"
@@ -439,7 +440,7 @@ msgstr ""
 
 #: ../../source/reference/integration.rst:173:<autosummary>:1
 msgid "Callback for XGBoost to prune unpromising trials."
-msgstr ""
+msgstr "用于清除无望 trial 的 XGBoost 回调函数。"
 
 #~ msgid "Parameters"
 #~ msgstr ""

source/locale/zh_CN/LC_MESSAGES/reference/structs.po

@@ -85,7 +85,8 @@ msgid ""
 "removal of this feature is currently scheduled for v3.0.0, but this "
 "schedule is subject to change. See "
 "https://github.com/optuna/optuna/releases/tag/v1.4.0."
-msgstr ""
+msgstr "在 v1.4.0 中被弃用。该特性将在未来被移除。目前我们计划在 v3.0.0 中移除它，但也可能会改变。参见 "
+"https://github.com/optuna/optuna/releases/tag/v1.4.0."
 
 #: of optuna.structs.FrozenTrial:7
 msgid ""
@@ -95,11 +96,11 @@ msgstr "该类已经迁移至 :mod:`~optuna.trial`, 请改用 :class:`~optuna.tr
 
 #: of optuna.structs.FrozenTrial.distributions:1
 msgid "Dictionary that contains the distributions of :attr:`params`."
-msgstr ""
+msgstr "包含了 :attr:`params` 分布的字典。"
 
 #: of optuna.structs.FrozenTrial.duration:1
 msgid "Return the elapsed time taken to complete the trial."
-msgstr ""
+msgstr "返回完成一个 trial 所消耗的时间。"
 
 #: of optuna.structs.FrozenTrial.duration optuna.structs.FrozenTrial.last_step
 #: optuna.structs.FrozenTrial.should_prune
@@ -108,19 +109,19 @@ msgstr ""
 
 #: of optuna.structs.FrozenTrial.duration:3
 msgid "The duration."
-msgstr ""
+msgstr "消耗的时间。"
 
 #: of optuna.structs.FrozenTrial.last_step:1
 msgid "Return the maximum step of `intermediate_values` in the trial."
-msgstr ""
+msgstr "返回 trial 中 `intermediate_values` 的最大步数。"
 
 #: of optuna.structs.FrozenTrial.last_step:3
 msgid "The maximum step of intermediates."
-msgstr ""
+msgstr "`intermediate_values` 的最大步数。"
 
 #: of optuna.structs.FrozenTrial.report:1
 msgid "Interface of report function."
-msgstr ""
+msgstr "report 函数接口。"
 
 #: of optuna.structs.FrozenTrial.report:3
 msgid ""
@@ -138,29 +139,30 @@ msgstr ""
 
 #: of optuna.structs.FrozenTrial.report:9
 msgid "A value returned from the objective function."
-msgstr ""
+msgstr "目标函数返回的值。"
 
 #: of optuna.structs.FrozenTrial.report:10
 msgid ""
 "Step of the trial (e.g., Epoch of neural network training). Note that "
 "pruners assume that ``step`` starts at zero. For example, "
 ":class:`~optuna.pruners.MedianPruner` simply checks if ``step`` is less "
 "than ``n_warmup_steps`` as the warmup mechanism."
-msgstr ""
+msgstr "Trial 的步骤（比如，神经网络训练中的 epoch 数）。注意，pruners 假定 ``step`` "
+"从零开始计算。比如 :class:`~optuna.pruners.MedianPruner` 将仅检查 ``step`` 是否小于 ``n_warmup_steps`` 作为热身机制。"
 
 #: of optuna.structs.FrozenTrial.should_prune:1
 msgid "Suggest whether the trial should be pruned or not."
-msgstr ""
+msgstr "建议该 trial 是否应该被剪枝。"
 
 #: of optuna.structs.FrozenTrial.should_prune:3
 msgid "The suggestion is always :obj:`False` regardless of a pruning algorithm."
-msgstr ""
+msgstr "无论剪枝算法是什么，建议值永远是 :obj:`False`."
 
 #: of optuna.structs.FrozenTrial.should_prune:6
 msgid ""
 ":class:`~optuna.trial.FrozenTrial` only samples one combination of "
 "parameters."
-msgstr ""
+msgstr ":class:`~optuna.trial.FrozenTrial` 只对参数组合进行一次采样。"
 
 #: of optuna.structs.FrozenTrial.should_prune:8
 msgid ":obj:`False`."

source/locale/zh_CN/LC_MESSAGES/reference/visualization/index.po

@@ -107,9 +107,8 @@ msgid ""
 msgstr ""
 
 #: ../../source/reference/visualization/index.rst:29:<autosummary>:1
-#, fuzzy
 msgid "Plot the Pareto front of a study."
-msgstr "将study中的参数关系绘制成切片图。"
+msgstr "绘制 study 的帕累托前沿面。"
 
 #: ../../source/reference/visualization/index.rst:29:<autosummary>:1
 msgid ":obj:`optuna.visualization.plot_slice <optuna.visualization.plot_slice>`"