diff --git a/examples/benchmarking/using_beir_with_a_custom_sbert_model.py b/examples/benchmarking/using_beir_with_a_custom_sbert_model.py
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+# -*- coding: utf-8 -*-
+"""Using BEIR with a Custom SBERT Model
+
+Automatically generated by Colaboratory.
+
+Original file is located at
+    https://colab.research.google.com/drive/1552z6RVGVaLgIlLy4AOXXGaweQgiEA4r
+
+## Downloading Sentence Transformers
+"""
+
+!pip install sentence_transformers
+
+"""Downloading the Semantic Textua Similarity  dataset"""
+
+!wget http://ixa2.si.ehu.es/stswiki/images/4/48/Stsbenchmark.tar.gz
+
+"""Taking a look at the files"""
+
+# Commented out IPython magic to ensure Python compatibility.
+# %%bash
+# 
+# tar -xvf /content/Stsbenchmark.tar.gz
+
+!cat stsbenchmark/readme.txt
+
+"""Looking into the file contents"""
+
+!head -n 10 stsbenchmark/sts-dev.csv
+
+"""What is the average length of the train/dev/test files?"""
+
+# Commented out IPython magic to ensure Python compatibility.
+# %%bash
+# dev_len=$(wc -l <stsbenchmark/sts-dev.csv)
+# echo $dev_len
+# train_len=$(wc -l <stsbenchmark/sts-train.csv)
+# echo $train_len
+# sum=$(($train_len+$dev_len))
+# echo $((sum/2))
+
+"""## Model building"""
+
+from torch.utils.data import DataLoader
+import math
+from sentence_transformers import SentenceTransformer,  LoggingHandler, losses, models, util
+from sentence_transformers.evaluation import EmbeddingSimilarityEvaluator
+from sentence_transformers.readers import InputExample
+import logging
+from datetime import datetime
+import sys
+import os
+import gzip
+import csv
+import torch
+
+sts_dataset_path = '/content/Stsbenchmark.tar.gz'
+train_batch_size = 64
+num_epochs = 20
+
+model_name = 'distilbert-base-uncased' #Good starting point for a Transformer model
+
+model_save_path = 'output/training_stsbenchmark_'+model_name.replace("/", "-")+'-'+datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
+
+print(model_save_path)
+
+#Bi-Encoder with Bottleneck Layer 
+
+word_embedding_model = models.Transformer(model_name)
+
+# Apply mean pooling to get one fixed sized sentence vector
+pooling_model = models.Pooling(word_embedding_model.get_word_embedding_dimension(),
+                               pooling_mode_mean_tokens=True,
+                               pooling_mode_cls_token=False,
+                               pooling_mode_max_tokens=False)
+dense_model = models.Dense(in_features=pooling_model.get_sentence_embedding_dimension(), 
+                           out_features=768, 
+                           activation_function=torch.nn.GELU())
+dense_model_inter = models.Dense(in_features=dense_model.get_sentence_embedding_dimension(), 
+                           out_features=384, 
+                           activation_function=torch.nn.GELU())
+dense_output = models.Dense(in_features=dense_model_inter.get_sentence_embedding_dimension(), 
+                           out_features=768, 
+                           activation_function=torch.nn.GELU())
+model = SentenceTransformer(modules=[word_embedding_model, pooling_model,dense_model,dense_model_inter,dense_output])
+
+# Simple model
+
+word_embedding_model = models.Transformer(model_name)
+
+# Apply mean pooling to get one fixed sized sentence vector
+pooling_model = models.Pooling(word_embedding_model.get_word_embedding_dimension(),
+                               pooling_mode_mean_tokens=True,
+                               pooling_mode_cls_token=False,
+                               pooling_mode_max_tokens=False)
+dense_model = models.Dense(in_features=pooling_model.get_sentence_embedding_dimension(), 
+                           out_features=768, 
+                           activation_function=torch.nn.GELU())
+model = SentenceTransformer(modules=[word_embedding_model, pooling_model,dense_model])
+
+# Properly loading the data 
+def create_data_samples(path:str,sample_list:list,encoding="utf-8"):
+  with open(path,encoding=encoding) as f:
+    reader=csv.reader(f,delimiter="\t",quoting=csv.QUOTE_NONE,dialect="excel")
+    for row in reader:
+      scores=float(row[4])/5.0 # Normalizing scores to 0-1 range from 1-5
+      sentence1=row[5]         # Store the sentences for similarity evaluation
+      sentence2=row[6]
+      inp_example = InputExample(texts=[sentence1,sentence2], label=scores) 
+      sample_list.append(inp_example)
+  return sample_list
+
+train_samples=create_data_samples(path='/content/stsbenchmark/sts-train.csv',sample_list=[],encoding="utf-8")
+test_samples=create_data_samples(path='/content/stsbenchmark/sts-test.csv',sample_list=[],encoding="utf-8")
+dev_samples=create_data_samples(path='/content/stsbenchmark/sts-dev.csv',sample_list=[],encoding="utf-8")
+
+train_dataloader = DataLoader(train_samples, shuffle=True, batch_size=train_batch_size)
+
+"""Define the Loss function"""
+
+train_loss = losses.CosineSimilarityLoss(model=model)
+
+"""Define the evaluator"""
+
+evaluator = EmbeddingSimilarityEvaluator.from_input_examples(dev_samples, name='sts-dev')
+
+warmup_steps = math.ceil(len(train_dataloader) * num_epochs  * 0.1)
+
+"""Time to train the model"""
+
+model.fit(train_objectives=[(train_dataloader, train_loss)],
+          evaluator=evaluator,
+          epochs=num_epochs,
+          evaluation_steps=1000,
+          warmup_steps=warmup_steps,
+          output_path=model_save_path)
+
+"""Testing the model performance on test set"""
+
+model = SentenceTransformer(model_save_path)
+test_evaluator = EmbeddingSimilarityEvaluator.from_input_examples(test_samples, name='sts-test')
+test_evaluator(model, output_path=model_save_path)
+
+"""# Loading the pre-trained model
+
+Lets us test the model on a few examples
+"""
+
+# 
+sentences1 = ['The cat sits outside',
+             'A man is playing guitar',
+             'The new movie is awesome']
+
+sentences2 = ['The dog plays in the garden',
+              'A woman watches TV',
+              'The new movie is so great']
+
+embeddings1 = model.encode(sentences1, convert_to_tensor=True)
+embeddings2 = model.encode(sentences2, convert_to_tensor=True)
+
+cosine_scores = util.cos_sim(embeddings1, embeddings2)
+for i in range(len(sentences1)):
+    print("{} \t\t {} \t\t Score: {:.4f}".format(sentences1[i], sentences2[i], cosine_scores[i][i]))
+
+!zip  -r   '/content/output.zip' '/content/output/'
+
+"""# Benchmarking Zero Shot Performance using BEIR
+
+"""
+
+!pip install beir
+
+!pip install tensorflow-text
+
+"""Let us download Scifact dataset for testing Zero Shot performance of our model"""
+
+from beir import util, LoggingHandler
+
+import logging
+import pathlib, os
+
+import pathlib, os
+from beir import util
+
+dataset = "scifact"
+url = "https://public.ukp.informatik.tu-darmstadt.de/thakur/BEIR/datasets/{}.zip".format(dataset)
+out_dir = os.path.join(os.getcwd(), "datasets")
+data_path = util.download_and_unzip(url, out_dir)
+print("Dataset downloaded here: {}".format(data_path))
+
+"""Peeking into scifact folder files"""
+
+!ls datasets/scifact/
+
+from beir.datasets.data_loader import GenericDataLoader
+
+data_path = "datasets/scifact"
+corpus, queries, qrels = GenericDataLoader(data_path).load(split="test") # or split = "train" or "dev"
+
+"""# Define the CustomModel"""
+
+from typing import List, Dict
+import numpy as np
+
+class DistilBertModel:
+    def __init__(self, model_path=None, **kwargs):
+        self.model = SentenceTransformer(model_path)
+    
+    # Write your own encoding query function (Returns: Query embeddings as numpy array)
+    # For eg ==> return np.asarray(self.model.encode(queries, batch_size=batch_size, **kwargs))
+    def encode_queries(self, queries: List[str], batch_size: int = 16, **kwargs) -> np.ndarray:
+        return np.asarray(self.model.encode(queries, batch_size=batch_size, **kwargs).cpu())
+    
+    # Write your own encoding corpus function (Returns: Document embeddings as numpy array)  
+    # For eg ==> sentences = [(doc["title"] + "  " + doc["text"]).strip() for doc in corpus]
+    #        ==> return np.asarray(self.model.encode(sentences, batch_size=batch_size, **kwargs))
+    def encode_corpus(self, corpus: List[Dict[str, str]], batch_size: int = 8, **kwargs) -> np.ndarray:
+        sentences = [(doc["title"] + "  " + doc["text"]).strip() for doc in corpus]
+        return np.asarray(self.model.encode(sentences, batch_size=batch_size, **kwargs).cpu())
+
+"""Finally evaluate the results on Scifact dataset using our custom-model"""
+
+from beir.retrieval.evaluation import EvaluateRetrieval
+#from beir.retrieval import models
+from beir.retrieval.search.dense import DenseRetrievalExactSearch as DRES
+
+model = DRES(DistilBertModel(model_path=model_save_path), batch_size=64)
+retriever = EvaluateRetrieval(model, score_function="cos_sim")
+
+#### Retrieve dense results (format of results is identical to qrels)
+results = retriever.retrieve(corpus, queries)
+
+ndcg, _map, recall, precision = retriever.evaluate(qrels, results, retriever.k_values)
+
+print(ndcg, _map, recall, precision)
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