MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 07/28/01 through 08/03/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 39 205 244
Davis 157 11 168
Irvine 21 0 21
Los Angeles 0 59 59
Riverside 9 43 52
San Diego 11 70 81
San Francisco 29 0 29
Santa Barbara 2 12 14
Santa Cruz 2 33 35
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 0 10 10
Other-Network UC n/a 426 426
_______ ______ _____
270 879 1,149
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,011 2,793 58,280
BIO88 138 298 1,528
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 10 169
2-4 a.m. 10 31 267
4-6 a.m. 6 20 124
6-8 a.m. 46 139 1,018
8-10 a.m. 165 377 1,939
10-12 a.m. 182 452 3,814
12-2 p.m. 214 575 6,096
2-4 p.m. 220 574 35,796
4-6 p.m. 177 499 6,333
6-8 p.m. 55 193 2,163
8-10 p.m. 42 134 1,127
10-12 p.m. 26 87 962
__________ __________ __________ _________________
Total: 1,149 3,091 59,808
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 127 580 707
Davis 472 30 502
Irvine 58 0 58
Los Angeles 0 221 221
Riverside 19 85 104
San Diego 58 184 242
San Francisco 93 0 93
Santa Barbara 2 69 71
Santa Cruz 6 94 100
Lawrence Berkeley 0 13 13
Lawrence Livermore 0 28 28
Los Alamos 0 0 0
Other - UC 2 13 15
Other-Network UC n/a 937 937
_______ ______ _____
837 2,254 3,091
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,157 6,304 7,461
Davis 4,397 168 4,565
Irvine 465 0 465
Los Angeles 0 1,729 1,729
Riverside 34,682 1,020 35,702
San Diego 86 1,708 1,794
San Francisco 537 0 537
Santa Barbara 15 664 679
Santa Cruz 8 822 830
Lawrence Berkeley 0 99 99
Lawrence Livermore 0 53 53
Los Alamos 0 0 0
Other - UC 0 40 40
Other-Network UC n/a 5,854 5,854
_______ ______ _____
41,347 18,461 59,808
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 3.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 10:45
Average session length (minutes:seconds) 14:47
Longest session recorded (minutes:seconds) 373:38
Average number of searches completed per session 2.7
Retrievals per search - median 7.0
Retrievals per search - average 537.5
Retrievals per search - standard deviation 8836.6
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 1.6%
Percent of long searches completed
(includes partial results) 68.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,743 32.2%
DISPLAY (excluding automatic displays) 3,088 36.3%
BROWSE 0 0.0%
HELP 62 0.7%
EXPLAIN 84 1.0%
SET/RESET 632 7.4%
SHOW 23 0.3%
ADD ON (AND, OR, AND NOT) 348 4.1%
LOGON or LOGOFF 1,170 13.8%
COMMENT 0 0.0%
SAVE 84 1.0%
USE 4 0.0%
OTHER 269 3.2%
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 1,055 34.4% 206 19.5% 21 114.4 511.5
TITLE WORD 452 14.8% 215 47.6% 6 211.7 779.6
EXACT TITLE 37 1.2% 21 56.8% 1 2.0 1.5
KEYWORD 1,090 35.6% 176 16.1% 17 1196.4 14769.2
JOURNAL 119 3.9% 53 44.5% 192 4623.4 23854.5
EXACT JOURNAL 35 1.1% 17 48.6% 57 1019.6 2289.7
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% 1 100% 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 1 0.0% 1 100% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 17 0.6% 3 17.6% 4 13.1 36.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 4 0.1% 1 25.0% 57 5792.3 9973.8
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 42 1.4% 12 28.6% 168 1215.0 4627.3
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 98 3.2% 14 14.3% 3 40.6 127.6
EXACT PE 34 1.1% 4 11.8% 3 8.3 15.2
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 77 2.5% 11 14.3% 22 716.5 3703.3
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 322 11.8% 97 30.1% 5 142.3 1692.1
Single 2,402 88.2% 538 22.4% 22 861.0 11316.3
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 3.1%
SHORT 84.9%
LONG 1.9%
TAGS 0.3%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 32.8%
2. First word of command is invalid 28.3%
3. FIND command with invalid index name 8.0%
4. PS command - no previous screen 4.8%
5. DISPLAY command contains invalid word 3.7%
6. Search term missing from search command 3.2%
7. Max. # of ports to a Z39 db are in use 2.7%
8. DATE search with unrecognized word 1.8%
9. Index invalid in current database 1.6%
10. DISPLAY command-record numbers too large 1.2%
11. All others 11.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 34.5%
2. FIND 13.1%
3. GUIDE 8.3%
4. COMMANDS 7.1%
5. INDEXES 6.0%
6. DATABASES 6.0%
7. BIOSIS DATABASE 2.4%
8. B342 2.4%
9. DATE 2.4%
10. SUPERTAXA 1.2%
11. All others 16.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.0%
2. First word of command is invalid 14.4%
3. DISPLAY command-first of >1 screen 9.6%
4. FIND command with invalid index name 7.5%
5. DISPLAY command-complete in one screen 6.2%
6. NS command - no next screen 5.5%
7. DISPLAY command - last of >1 screen 4.1%
8. NS of SHOW/EXP command-no next screen 4.1%
9. F/BR command with invalid search term 2.1%
10. 117 2.1%
11. All others 20.5%
Ten most frequent SHOW requests:
1. HISTORY 63.6%
2. MAIL STATUS 31.8%
3. SETTINGS 4.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)