TF-IDF significa frequência inversa de termo-documento, usado para medir a importância de uma determinada palavra-chave em uma página. Ao contrário da densidade de palavras-chave, não se limita a contar quantas vezes o termo é utilizado na página; também analisa um conjunto maior de páginas e tenta determinar o quão importante é esta ou aquela palavra-chave.
Digamos que, em reparação de carros, o termo 'reparo de pneus' seja mais importante do que 'reparo de motores turbo'. Essencialmente porque todos os carros possuem pneus, enquanto apenas alguns têm motores turbo. Por causa disso, o termo 'reparo de pneus' é mais utilizado em um conjunto maior de páginas que falam sobre reparação de carros.
Isso é exatamente o que o relatório de TF-IDF no WebSite Audit será capaz de captar!
Ao olhar para as estatísticas de utilização de palavras-chave de um grande número de concorrentes, a fórmula de TF-IDF vai mostrar:
Quando usar análise de TF-IDF?
Por que usar o relatório de TF-IDF?
Calcula os fatores de otimização de conteúdo. Também analisa o quão bem sua página está otimizada para as palavras-chave de destino.
Descobre as palavras-chave e frases que seus concorrentes de melhor classificação estão usando
Encontre as palavras e frases com recomendações de uso insuficiente ou em excesso para ver como você pode ajustar sua cópia para melhorar a relevância
Como funciona o relatório de TF-IDF?
O relatório de TF-IDF funciona com uma fórmula específica em que, para o termo t no documento d, o peso Wt,d do termo t no documento d é dado por: Wt,d = TFt,d log (N/DFt)
Pensamentos finais
A HulkApps possui serviços de relatórios de TF-IDF completos para Shopify, para ajudar proprietários de lojas, assim como você, a extrair os termos mais descritivos em um documento/site...
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