MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/02/00 through 12/08/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 243 333 576
Davis 184 20 204
Irvine 41 0 41
Los Angeles 51 40 91
Riverside 33 49 82
San Diego 18 112 130
San Francisco 44 0 44
Santa Barbara 5 35 40
Santa Cruz 15 51 66
Lawrence Berkeley 0 22 22
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 1 45 46
Other-Network UC n/a 443 443
_______ ______ _____
635 1,155 1,790
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,567 4,416 43,143
BIO88 223 506 3,249
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 51 291
2-4 a.m. 2 16 113
4-6 a.m. 11 21 194
6-8 a.m. 42 81 1,001
8-10 a.m. 187 451 5,152
10-12 a.m. 351 903 6,108
12-2 p.m. 338 946 7,502
2-4 p.m. 387 1,187 11,617
4-6 p.m. 239 666 8,558
6-8 p.m. 106 280 2,521
8-10 p.m. 57 167 2,102
10-12 p.m. 60 153 1,233
__________ __________ __________ _________________
Total: 1,790 4,922 46,392
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 739 1,157 1,896
Davis 585 47 632
Irvine 100 0 100
Los Angeles 135 124 259
Riverside 84 119 203
San Diego 57 283 340
San Francisco 104 0 104
Santa Barbara 12 180 192
Santa Cruz 32 131 163
Lawrence Berkeley 0 50 50
Lawrence Livermore 0 10 10
Los Alamos 0 0 0
Other - UC 1 122 123
Other-Network UC n/a 850 850
_______ ______ _____
1,849 3,073 4,922
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,796 10,857 16,653
Davis 6,175 213 6,388
Irvine 591 0 591
Los Angeles 1,121 1,870 2,991
Riverside 4,337 1,462 5,799
San Diego 438 1,940 2,378
San Francisco 813 0 813
Santa Barbara 27 1,715 1,742
Santa Cruz 304 1,999 2,303
Lawrence Berkeley 0 190 190
Lawrence Livermore 0 115 115
Los Alamos 0 0 0
Other - UC 0 1,156 1,156
Other-Network UC n/a 5,273 5,273
_______ ______ _____
19,602 26,790 46,392
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 3.7
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) 6:57
Average session length (minutes:seconds) 12:39
Longest session recorded (minutes:seconds) 213:27
Average number of searches completed per session 2.7
Retrievals per search - median 9.0
Retrievals per search - average 995.5
Retrievals per search - standard deviation 10563
Percent of searches completed with 0 results 22.2%
Percent of searches entered that are long 2.1%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,378 29.9%
DISPLAY (excluding automatic displays) 5,555 38.0%
BROWSE 0 0.0%
HELP 179 1.2%
EXPLAIN 210 1.4%
SET/RESET 877 6.0%
SHOW 41 0.3%
ADD ON (AND, OR, AND NOT) 544 3.7%
LOGON or LOGOFF 1,982 13.5%
COMMENT 1 0.0%
SAVE 316 2.2%
USE 2 0.0%
OTHER 546 3.7%
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 1,482 31.5% 274 18.5% 25 177.5 720.5
TITLE WORD 796 16.9% 313 39.3% 8 282.4 1575.8
EXACT TITLE 33 0.7% 15 45.5% 1 13.1 22.0
KEYWORD 1,886 40.1% 339 18.0% 27 2001.2 15159.9
JOURNAL 145 3.1% 67 46.2% 1,602 9366.5 19233.2
EXACT JOURNAL 70 1.5% 19 27.1% 921 2153.3 4046.6
SOURCE 1 0.0% 1 100% 0 0.0 0.0
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 0 0.0% 0 0.0% 0 0.0 0.0
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 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 3 0.1% 0 0.0% 3 3.7 2.1
DATE 18 0.4% 5 27.8% 7 278.7 941.7
LANGUAGE 2 0.0% 0 0.0% 204 204.0 42.4
ADDED 1 0.0% 0 0.0% 11 11.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 10 0.2% 5 50.0% 9 11.8 10.3
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 139 3.0% 24 17.3% 3 20.5 69.4
EXACT PE 29 0.6% 2 6.9% 2 8.4 16.3
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 94 2.0% 15 16.0% 12 5389.3 42800.7
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 360 8.3% 112 31.1% 6 199.7 1826.6
Single 3,974 91.7% 851 21.4% 28 1479.5 13108.6
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 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 87.6%
LONG 1.7%
TAGS 0.5%
FIELDS 1.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.2%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.9%
Ten most frequent errors:
1. First word of command is invalid 30.9%
2. NS command - no next screen 30.2%
3. FIND command with invalid index name 8.7%
4. DISPLAY command contains invalid word 5.1%
5. PS command - no previous screen 3.6%
6. Max. # of ports to a Z39 db are in use 3.1%
7. Valid command at an inappropriate time 2.2%
8. Search term missing from search command 2.2%
9. DATE search with unrecognized word 1.5%
10. NS of SHOW/EXP command-no next screen 1.3%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.1%
2. LOCATE (BIO DB) 27.1%
3. INDEXES 7.1%
4. FIND 6.2%
5. Unrecognized term 5.7%
6. ADDON SEARCH 3.8%
7. COMMANDS 3.3%
8. DATE 1.9%
9. DISPLAY 1.9%
10. CONCEPT CODES 1.4%
11. All others 13.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.6%
2. First word of command is invalid 16.2%
3. FIND command with invalid index name 9.5%
4. DISPLAY command-first of >1 screen 9.0%
5. FIND command retrieves >1 book 6.2%
6. DISPLAY command - middle of >1 screen 5.1%
7. DISPLAY command-complete in one screen 4.9%
8. DISPLAY command - last of >1 screen 4.4%
9. FIND command with zero results 2.3%
10. NS command - no next screen 1.8%
11. All others 19.0%
Ten most frequent SHOW requests:
1. HISTORY 51.2%
2. SEARCH 29.3%
3. BIOSIS NEWS 7.3%
4. SETTINGS 2.4%
5. TAXONOMIC GUIDE 2.4%
6. TAXONOMIC GUIDE: ANIMALS 2.4%
7. B651 2.4%
8. B902 2.4%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)