## 5 Expertise Retrieval
### Measuring Similarity Between Mobile Apps' Descriptions
#### 5.1.2 App Description Similarity Setup
\begin{table}
\begin{tabular}{c c c c c} \hline \hline  & \multicolumn{3}{c}{\(\boldsymbol{q_{4}}\)} \\ \cline{2-5}  & **App Name** & **SBERT** & **Doc2 Vec** & **H.J.** \\ \hline D1 & CryptoHodler Portfolio Tracker & 0.70 & 0.49 & 7.33 \\ \hline D2 & Krypto: Simple Crypto Tracker & 0.69 & 0.45 & 6.83 \\ \hline D3 & Coin Portfolio: Crypto Tracker & 0.66 & 0.51 & 7.33 \\ \hline D4 & Moni cryptocurrency portfolio & 0.64 & 0.45 & 7.33 \\ \hline D5 & peachfolio & 0.64 & 0.48 & 6.33 \\ \hline D6 & InvesTiger by Sharekhan & 0.45 & 0.38 & 5.33 \\ \hline D7 & Bull Stock Trader & 0.45 & 0.34 & 6.17 \\ \hline D8 & MarketCapOf—Crypto Price Sim & 0.45 & 0.46 & 7.17 \\ \hline D9 & OctaFX Trading App & 0.45 & 0.41 & 5.17 \\ \hline D10 & RealT Wallet & 0.45 & 0.46 & 6.83 \\ \hline D11 & Mortgage Refinance Calculater & \(-\)0.01 & 0.22 & 1.67 \\ \hline D12 & Square Insurance & 0.11 & 0.39 & 0 \\ \hline D13 & Credit Limit App-GalaxyCard & 0.05 & 0.25 & 1 \\ \hline D14 & Tommys Tax—Tax Refund’s & 0.06 & 0.33 & 1.33 \\ \hline D15 & Flex—Rent On Your Schedule & 0.07 & 0.24 & 0.83 \\ \hline C.C. & Correlation Coefficient with H.J. & 0.938 & 0.814 & - \\ \hline \end{tabular}
\end{table} 
Table 6: SBERT, Doc2 Vec and H.J. similarity scores between app descriptions and query 4 description. \begin{table}
\begin{tabular}{c c c c c} \hline \hline  & \multicolumn{3}{c}{\(\boldsymbol{q_{5}}\)} \\ \cline{2-5}  & **App Name** & **SBERT** & **Doc2 Vec** & **H.J.** \\ \hline D1 & Aria & 0.61 & 0.53 & 7.08 \\ \hline D2 & Code App & 0.57 & 0.56 & 6.92 \\ \hline D3 & Kodex & 0.56 & 0.50 & 6.9 \\ \hline D4 & MarkGit & 0.56 & 0.62 & 7 \\ \hline D5 & Hacker Type-code snippets & 0.51 & 0.56 & 5.67 \\ \hline D6 & ColourConvert & 0.27 & 0.42 & 4.67 \\ \hline D7 & Bakery—Simple Ion Creator & 0.27 & 0.49 & 2.17 \\ \hline D8 & Jayson & 0.28 & 0.48 & 4 \\ \hline D9 & LaunchBuddy—Solo Developer & 0.28 & 0.44 & 2.67 \\ \hline D10 & iBetaObserver & 0.28 & 0.57 & 1.5 \\ \hline D11 & Mimic XR & 0.04 & 0.39 & 0 \\ \hline D12 & Rankin & 0.08 & 0.41 & 1.33 \\ \hline \end{tabular}
\end{table} 
Table 7: SBERT, Doc2 Vec and H.J. similarity scores between app descriptions and query 5 description. \begin{table}
\begin{tabular}{c c c c c} \hline \hline  & \multicolumn{3}{c}{\(\boldsymbol{q_{3}}\)} \\ \cline{2-5}  & **App Name** & **SBERT** & **Doc2 Vec** & **H.J.** \\ \hline D1 & \multicolumn{2}{c}{Funexpected Math for Kids} & 0.71 & 0.46 & 6.83 \\ \hline D2 & My Math Flash Cards App & 0.68 & 0.51 & 8.25 \\ \hline D3 & Monster Maths Pro & 0.66 & 0.43 & 6.33 \\ \hline D4 & Mental Math Tricks Workout & 0.65 & 0.44 & 5.67 \\ \hline D5 & Countingwell iLearn Maths & 0.61 & 0.53 & 6.5 \\ \hline D6 & ChalkLit & 0.45 & 0.40 & 3 \\ \hline D7 & TopperZ & 0.45 & 0.36 & 2.25 \\ \hline D8 & Teachmin—App for Schools & 0.45 & 0.37 & 2.67 \\ \hline D9 & Google Classroom & 0.42 & 0.41 & 3.83 \\ \hline D10 & Mimo: Learn Coding/Programming & 0.42 & 0.37 & 1.25 \\ \hline D11 & OCEARCH Shark Tracker & 0.07 & 0.21 & 0 \\ \hline D12 & PUSH-PULL app & 0.07 & 0.36 & 0 \\ \hline D13 & SIDS Info & 0.08 & 0.35 & 0.17 \\ \hline D14 & Ham Test Prep (New) & 0.09 & 0.46 & 0.33 \\ \hline D15 & Field Guide to Victorian Fauna & 0.10 & 0.30 & 0 \\ \hline C.C. & Correlation Coefficient with H.J. & 0.936 & 0.769 & - \\ \hline \end{tabular}
\end{table} 
Table 5: SBERT, Doc2 Vec and H.J. similarity scores between app descriptions and query 3 description.