Language of Vectors (LangVec) is a simple Python library designed for transforming numerical vector data into a language-like structure using a predefined set of words (lexicon).

Approach

LangVec package leverages the concept of percentile-based mapping to assign words from a lexicon to numerical values, facilitating intuitive and human-readable representations of numerical data.

Simplified schema of how LangVec works

Where to use LangVec

The main application is in semantic search and similarity-based systems, where understanding the proximity between vectors is crucial.
By transforming complex numerical vectors into a lexicon-based representation, LangVec facilitates an intuitive understanding of these similarities for humans.

In fields like machine learning and natural language processing, LangVec can assist in tasks such as clustering or categorizing data, where a human-readable format is preferable for quick insights and decision-making.

Installation

pip install langvec

Usage

Example 1

import numpy as np

from langvec import LangVec

# Random seed
np.random.seed(42)

# Initialize LangVec
lv = LangVec()
NUM_VECTORS = 1000
DIMENSIONS = 10

# Generate some random data
vectors = [np.random.uniform(0, 1, DIMENSIONS) for _ in range(NUM_VECTORS)]

# Fit to this data (getting know to distribution)
lv.fit(vectors)

# Save current model
lv.save("model.lv")

# Example vector for prediction
input_vector = np.random.uniform(0, 1, DIMENSIONS)

# Make prediction on unseen vector embedding
print(lv.predict(input_vector))

Example 2

import string

import numpy as np

from langvec import LangVec

np.random.seed(42)

# Define a new lexicon with lowercase and uppercase letters
LEXICON = list(string.ascii_letters)

# Initialize LangVec with the new lexicon
lv = LangVec(lexicon=LEXICON)

NUM_VECTORS = 10000
DIMENSIONS = 256

# Generate some random data
vectors = [np.random.uniform(0, 1, DIMENSIONS) for _ in range(NUM_VECTORS)]

# Fit to this data
lv.fit(vectors)

# Example vector for prediction
input_vector = np.random.uniform(0, 1, DIMENSIONS)

# Make prediction on the unseen vector embedding
predicted_string = "".join(lv.predict(input_vector))
print(predicted_string)
if len(predicted_string) > 6:
    summarized_string = (
        "".join(predicted_string[:3]) + "..." + "".join(predicted_string[-3:])
    )
else:
    summarized_string = "".join(predicted_string)

print(summarized_string)

Save and load model from disk

LangVec allows you to save and load percentiles as model artifacts. This is useful for preserving the learned distribution without needing to retrain the model. You can use the following methods:

Save model

from langvec import LangVec

# Initialize LangVec
lv = LangVec()

# Save the model to file
lv.save("model.lv")

Load model

from langvec import LangVec

# Initialize LangVec
lv = LangVec()

# Load the model from file
lv.load("model.lv")

Citation

If you use LangVec in your research, please cite the following paper:

Emanuilov, S. and Dimov, A., 2024. Lexical representation of dense numerical vectors: Introducing LangVec. Mathematics & Informatics, 67(3).