MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 08/01/00 through 08/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 342 1,123 1,465
Davis 914 67 981
Irvine 144 0 144
Los Angeles 223 322 545
Riverside 119 238 357
San Diego 90 188 278
San Francisco 404 0 404
Santa Barbara 39 117 156
Santa Cruz 77 185 262
Lawrence Berkeley 0 70 70
Lawrence Livermore 0 31 31
Los Alamos 0 0 0
Other - UC 79 107 186
Other-Network UC n/a 1,413 1,413
_______ ______ _____
2,431 3,861 6,292
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 5,490 16,818 151,291
BIO88 802 1,831 11,693
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 62 218 2,091
2-4 a.m. 17 39 305
4-6 a.m. 38 121 847
6-8 a.m. 137 356 3,850
8-10 a.m. 680 1,560 10,956
10-12 a.m. 1,134 3,213 26,086
12-2 p.m. 1,135 3,381 31,672
2-4 p.m. 1,341 4,244 39,764
4-6 p.m. 1,093 3,422 29,172
6-8 p.m. 315 1,082 8,600
8-10 p.m. 208 660 6,018
10-12 p.m. 132 353 3,623
__________ __________ __________ _________________
Total: 6,292 18,649 162,984
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,381 4,309 5,690
Davis 2,627 257 2,884
Irvine 446 0 446
Los Angeles 566 955 1,521
Riverside 325 579 904
San Diego 256 582 838
San Francisco 1,253 0 1,253
Santa Barbara 141 524 665
Santa Cruz 276 482 758
Lawrence Berkeley 0 207 207
Lawrence Livermore 0 79 79
Los Alamos 0 0 0
Other - UC 154 207 361
Other-Network UC n/a 3,043 3,043
_______ ______ _____
7,425 11,224 18,649
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,644 41,966 57,610
Davis 29,808 2,544 32,352
Irvine 3,298 0 3,298
Los Angeles 4,262 7,636 11,898
Riverside 2,017 5,682 7,699
San Diego 2,912 5,080 7,992
San Francisco 6,163 0 6,163
Santa Barbara 811 5,250 6,061
Santa Cruz 2,311 5,107 7,418
Lawrence Berkeley 0 1,365 1,365
Lawrence Livermore 0 631 631
Los Alamos 0 0 0
Other - UC 1,110 1,864 2,974
Other-Network UC n/a 17,523 17,523
_______ ______ _____
68,336 94,648 162,984
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 7:53
Average session length (minutes:seconds) 14:18
Longest session recorded (minutes:seconds) 763:36
Average number of searches completed per session 2.9
Retrievals per search - median 10.0
Retrievals per search - average 878.4
Retrievals per search - standard deviation 9171.2
Percent of searches completed with 0 results 22.1%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 57.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 15,945 30.1%
DISPLAY (excluding automatic displays) 19,591 36.9%
BROWSE 11 0.0%
HELP 449 0.8%
EXPLAIN 631 1.2%
SET/RESET 3,320 6.3%
SHOW 153 0.3%
ADD ON (AND, OR, AND NOT) 2,704 5.1%
LOGON or LOGOFF 6,504 12.3%
COMMENT 0 0.0%
SAVE 1,809 3.4%
USE 13 0.0%
OTHER 1,919 3.6%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 6,632 38.1% 1,181 17.8% 21 173.2 1050.7
TITLE WORD 2,745 15.8% 974 35.5% 8 443.7 3606.3
EXACT TITLE 138 0.8% 68 49.3% 1 48.4 266.2
KEYWORD 5,358 30.8% 922 17.2% 37 2316.8 15069.3
JOURNAL 768 4.4% 334 43.5% 450 4048.7 14901.8
EXACT JOURNAL 227 1.3% 82 36.1% 813 2310.0 4886.1
SOURCE 14 0.1% 10 71.4% 507 1001.8 1264.4
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 2 0.0% 0 0.0% 5 5.0 2.8
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 62,654 62654.0 0.0
PUBLICATION TYPE 1 0.0% 0 0.0% 584 584.0 0.0
DATE 85 0.5% 16 18.8% 12 52.3 138.0
LANGUAGE 10 0.1% 1 10.0% 51 171.3 231.8
ADDED 4 0.0% 0 0.0% 16 15.0 7.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 111 0.6% 21 18.9% 25 4282.3 35241.8
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 14 0.1% 7 50.0% 990 1021.7 314.3
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 650 3.7% 186 28.6% 4 78.0 462.0
EXACT PE 142 0.8% 19 13.4% 3 17.3 44.9
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 504 2.9% 90 17.9% 20 1485.8 13472.3
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 1,542 9.8% 456 29.6% 7 166.1 1594.6
Single 14,254 90.2% 2,977 20.9% 29 1317.7 10880.5
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
CONCEPT CODES 11 100% 4 36.4% 5 4.1 3.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 85.0%
LONG 1.7%
TAGS 0.6%
FIELDS 2.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.4%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 39.5%
2. First word of command is invalid 26.3%
3. FIND command with invalid index name 8.6%
4. DISPLAY command contains invalid word 3.2%
5. PS command - no previous screen 2.8%
6. Search term missing from search command 1.8%
7. DATE search with unrecognized word 1.5%
8. Index invalid in current database 1.5%
9. Valid command at an inappropriate time 1.2%
10. DISPLAY command - no FIND results 0.9%
11. All others 12.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 16.3%
2. FIND 9.8%
3. LOCATE (BIO DB) 9.5%
4. INDEXES 9.2%
5. COMMANDS 6.2%
6. Unrecognized term 5.5%
7. BIOSIS DATABASE 4.9%
8. ADDON SEARCH 3.0%
9. DISPLAY 2.7%
10. MAIL 2.1%
11. All others 30.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.5%
2. First word of command is invalid 10.6%
3. FIND command with invalid index name 8.1%
4. DISPLAY command-first of >1 screen 7.8%
5. FIND command with zero results 5.3%
6. FIND command retrieves >1 book 5.1%
7. DISPLAY command - middle of >1 screen 4.8%
8. DISPLAY command - last of >1 screen 3.5%
9. NS command - no next screen 3.0%
10. DISPLAY command-complete in one screen 1.9%
11. All others 24.5%
Ten most frequent SHOW requests:
1. HISTORY 47.4%
2. SEARCH 15.3%
3. MAIL STATUS 8.8%
4. SETTINGS 4.4%
5. SUPERTAXA HIERARCHICAL TABLE 3.6%
6. BIOSIS NEWS 3.6%
7. SUPERTAXA ALPHABETICAL TABLE 2.9%
8. GLOSSARY 2.2%
9. SYSTEM NEWS 2.2%
10. SUPERTAXA SETTING 1.5%
11. All others 8.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)