MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/01/00 through 02/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 54 216 270
Davis 105 6 111
Irvine 11 0 11
Los Angeles 76 21 97
Riverside 41 25 66
San Diego 5 29 34
San Francisco 28 0 28
Santa Barbara 2 12 14
Santa Cruz 29 101 130
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 3 12 15
Other-Network UC n/a 499 499
_______ ______ _____
354 925 1,279
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 0 0 0
BIO88 1,279 2,914 18,413
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 21 85
2-4 a.m. 13 35 127
4-6 a.m. 17 36 99
6-8 a.m. 20 40 282
8-10 a.m. 129 386 2,343
10-12 a.m. 218 488 2,133
12-2 p.m. 230 537 3,640
2-4 p.m. 275 572 3,777
4-6 p.m. 213 432 2,977
6-8 p.m. 88 209 2,007
8-10 p.m. 43 110 735
10-12 p.m. 23 48 208
__________ __________ __________ _________________
Total: 1,279 2,914 18,413
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 179 584 763
Davis 247 32 279
Irvine 20 0 20
Los Angeles 160 33 193
Riverside 91 39 130
San Diego 167 62 229
San Francisco 106 0 106
Santa Barbara 2 33 35
Santa Cruz 66 241 307
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 6 51 57
Other-Network UC n/a 782 782
_______ ______ _____
1,044 1,870 2,914
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,521 4,017 5,538
Davis 1,321 35 1,356
Irvine 161 0 161
Los Angeles 1,055 168 1,223
Riverside 1,609 156 1,765
San Diego 456 356 812
San Francisco 247 0 247
Santa Barbara 10 293 303
Santa Cruz 314 2,731 3,045
Lawrence Berkeley 0 38 38
Lawrence Livermore 0 97 97
Los Alamos 0 0 0
Other - UC 29 520 549
Other-Network UC n/a 3,279 3,279
_______ ______ _____
6,723 11,690 18,413
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.0
Standard deviation in seconds 11.9
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) 7:49
Average session length (minutes:seconds) 17:29
Longest session recorded (minutes:seconds) 894:37
Average number of searches completed per session 2.3
Retrievals per search - median 3.0
Retrievals per search - average 352.9
Retrievals per search - standard deviation 5144.4
Percent of searches completed with 0 results 28.6%
Percent of searches entered that are long 1.1%
Percent of long searches completed
(includes partial results) 75.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,516 33.1%
DISPLAY (excluding automatic displays) 2,231 29.3%
BROWSE 5 0.1%
HELP 24 0.3%
EXPLAIN 26 0.3%
SET/RESET 1,094 14.4%
SHOW 37 0.5%
ADD ON (AND, OR, AND NOT) 398 5.2%
LOGON or LOGOFF 637 8.4%
COMMENT 0 0.0%
SAVE 362 4.8%
USE 8 0.1%
OTHER 277 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 1,190 40.2% 277 23.3% 12 89.7 395.6
TITLE WORD 591 20.0% 297 50.3% 4 102.0 797.5
EXACT TITLE 34 1.1% 17 50.0% 2 53.1 181.9
KEYWORD 700 23.7% 166 23.7% 12 339.9 1887.8
JOURNAL 109 3.7% 42 38.5% 124 2965.5 15690.3
EXACT JOURNAL 32 1.1% 12 37.5% 817 3278.4 5059.1
SOURCE 0 0.0% 0 0.0% 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 1 0.0% 0 0.0% 75,866 75866.0 .
SUPERTAXA 13 0.4% 0 0.0% 4 28.8 49.8
MAJ CONCEPT CDES 3 0.1% 0 0.0% 73,704 49583.3 41778.2
CONCEPT CODES 1 0.0% 0 0.0% 200868 200868 .
PUBLICATION TYPE 6 0.2% 1 16.7% 2 5.2 7.2
DATE 142 4.8% 28 19.7% 7 60.2 182.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 3 0.1% 2 66.7% 10 10.0 .
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 497 497.0 .
ISBN 3 0.1% 0 0.0% 53 44.3 15.0
PERIODICAL 76 2.6% 22 28.9% 11 31.3 46.1
EXACT PE 15 0.5% 1 6.7% 11 109.5 365.8
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 36 1.2% 16 44.4% 4 206.3 448.2
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 434 17.3% 149 34.3% 4 34.5 142.2
Single 2,068 82.7% 575 27.8% 16 656.1 7144.9
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 5 100% 2 40.0% 1 2.0 1.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 83.3%
LONG 2.1%
TAGS 0.7%
FIELDS 2.5%
BROWSE REVIEW 0.1%
BROWSE SHORT 0.0%
BROWSE LONG 0.1%
PERIODICALS 4.9%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 41.3%
2. First word of command is invalid 24.8%
3. FIND command with invalid index name 8.2%
4. DATE search with unrecognized word 3.4%
5. DISPLAY command contains invalid word 2.0%
6. PS command - no previous screen 2.0%
7. Valid command at an inappropriate time 1.9%
8. Search term missing from search command 1.7%
9. DISPLAY command - no FIND results 1.2%
10. Index invalid in current database 1.0%
11. All others 12.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 23.1%
2. BIOSIS DATABASE 19.2%
3. B921 11.5%
4. FIND LOCATION 7.7%
5. 1211 7.7%
6. COMMANDS 3.8%
7. GUIDE 3.8%
8. SUPERTAXA 3.8%
9. LIMIT 3.8%
10. B401 3.8%
11. All others 11.5%
Ten most frequent HELP situations:
1. First word of command is invalid 22.0%
2. Help requested from SET DB command 18.0%
3. DISPLAY command - last of >1 screen 14.0%
4. FIND command retrieves >1 book 8.0%
5. 117 4.0%
6. FIND command retrieves 1 book 4.0%
7. DISPLAY command-complete in one screen 4.0%
8. Multi-index search with zero results 4.0%
9. 454 4.0%
10. 754 4.0%
11. All others 14.0%
Ten most frequent SHOW requests:
1. HISTORY 88.9%
2. BIOSIS NEWS 7.4%
3. SEARCH 3.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)