面向开发者的LLM入门课程-评估英文版提（3）

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面向开发者的LLM入门课程-评估英文版提（3）：

英文版提示

3.通过LLM进行评估实例

langchain.debug = False

#为所有不同的示例创建预测
predictions = qa.apply(examples)

# 对预测的结果进行评估，导入QA问题回答，评估链，通过语言模型创建此链
from langchain.evaluation.qa import QAEvalChain #导入QA问题回答，评估链

#通过调用chatGPT进行评估
llm = ChatOpenAI(temperature=0)
eval_chain = QAEvalChain.from_llm(llm)

#在此链上调用evaluate，进行评估
graded_outputs = eval_chain.evaluate(examples, predictions)

#我们将传入示例和预测，得到一堆分级输出，循环遍历它们打印答案
for i, eg in enumerate(examples):
print(f”Example {i}:”)
print(“Question: ” + predictions[i][‘query’])
print(“Real Answer: ” + predictions[i][‘answer’])
print(“Predicted Answer: ” + predictions[i][‘result’])
print(“Predicted Grade: ” + graded_outputs[i][‘results’])
print()

> Entering new RetrievalQA chain…

> Finished chain.
Example 0:
Question: Do the Cozy Comfort Pullover Set have side pockets?
Real Answer: Yes
Predicted Answer: Yes, the Cozy Comfort Pullover Set does have side pockets.
Predicted Grade: CORRECT

Example 1:
Question: What collection is the Ultra-Lofty 850 Stretch Down Hooded Jacket from?
Real Answer: The DownTek collection
Predicted Answer: The Ultra-Lofty 850 Stretch Down Hooded Jacket is from the
DownTek collection.
Predicted Grade: CORRECT

Example 2:
Question: What is the description of the Women’s Campside Oxfords?
Real Answer: The description of the Women’s Campside Oxfords is that they are an
ultracomfortable lace-to-toe Oxford made of super-soft canvas. They have thick
cushioning and quality construction, providing a broken-in feel from the first
time they are worn.
Predicted Answer: The description of the Women’s Campside Oxfords is: “This
ultracomfortable lace-to-toe Oxford boasts a super-soft canvas, thick cushioning,
and quality construction for a broken-in feel from the first time you put them
on.”
Predicted Grade: CORRECT

Example 3:
Question: What are the dimensions of the small and medium sizes of the Recycled
Waterhog Dog Mat, Chevron Weave?
Real Answer: The dimensions of the small size of the Recycled Waterhog Dog Mat,
Chevron Weave are 18″ x 28″. The dimensions of the medium size are 22.5″ x 34.5″.
Predicted Answer: The dimensions of the small size of the Recycled Waterhog Dog
Mat, Chevron Weave are 18″ x 28″. The dimensions of the medium size are 22.5″ x
34.5″.
Predicted Grade: CORRECT

Example 4:
Question: What are the features of the Infant and Toddler Girls’ Coastal Chill
Swimsuit, Two-Piece?
Real Answer: The swimsuit has bright colors, ruffles, and exclusive whimsical
prints. It is made of four-way-stretch and chlorine-resistant fabric, which keeps
its shape and resists snags. The fabric is UPF 50+ rated, providing the highest
rated sun protection possible by blocking 98% of the sun’s harmful rays. The
swimsuit also has crossover no-slip straps and a fully lined bottom for a secure
fit and maximum coverage.
Predicted Answer: The features of the Infant and Toddler Girls’ Coastal Chill
Swimsuit, Two-Piece are:

– Bright colors and ruffles
– Exclusive whimsical prints
– Four-way-stretch and chlorine-resistant fabric
– UPF 50+ rated fabric for sun protection
– Crossover no-slip straps
– Fully lined bottom for a secure fit and maximum coverage
– Machine washable and line dry for best results
– Imported
Predicted Grade: CORRECT

Example 5:
Question: What is the fabric composition of the Refresh Swimwear, V-Neck Tankini
Contrasts?
Real Answer: The Refresh Swimwear, V-Neck Tankini Contrasts is made of 82%
recycled nylon and 18% Lycra® spandex for the body, and 90% recycled nylon with
10% Lycra® spandex for the lining.
Predicted Answer: The fabric composition of the Refresh Swimwear, V-Neck Tankini
Contrasts is 82% recycled nylon with 18% Lycra® spandex for the body, and 90%
recycled nylon with 10% Lycra® spandex for the lining.
Predicted Grade: CORRECT

Example 6:
Question: What is the fabric composition of the EcoFlex 3L Storm Pants?
Real Answer: The EcoFlex 3L Storm Pants are made of 100% nylon, exclusive of
trim.
Predicted Answer: The fabric composition of the EcoFlex 3L Storm Pants is 100%
nylon, exclusive of trim.
Predicted Grade: CORRECT

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