MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/01/01 through 04/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,026 1,281 2,307
Davis 672 23 695
Irvine 104 0 104
Los Angeles 7 310 317
Riverside 52 161 213
San Diego 110 234 344
San Francisco 187 0 187
Santa Barbara 8 139 147
Santa Cruz 47 200 247
Lawrence Berkeley 0 8 8
Lawrence Livermore 0 55 55
Los Alamos 0 0 0
Other - UC 3 109 112
Other-Network UC n/a 1,562 1,562
_______ ______ _____
2,216 4,082 6,298
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 5,632 18,363 219,070
BIO88 666 1,422 16,489
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 77 286 2,310
2-4 a.m. 21 68 863
4-6 a.m. 41 119 1,440
6-8 a.m. 142 428 3,791
8-10 a.m. 584 1,742 16,308
10-12 a.m. 1,036 2,915 35,599
12-2 p.m. 1,062 3,080 27,267
2-4 p.m. 1,292 4,011 54,551
4-6 p.m. 994 3,460 52,877
6-8 p.m. 508 1,701 18,176
8-10 p.m. 376 1,397 12,273
10-12 p.m. 165 578 10,104
__________ __________ __________ _________________
Total: 6,298 19,785 235,559
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 4,138 4,262 8,400
Davis 2,501 63 2,564
Irvine 270 0 270
Los Angeles 13 907 920
Riverside 296 447 743
San Diego 350 645 995
San Francisco 648 0 648
Santa Barbara 17 460 477
Santa Cruz 135 610 745
Lawrence Berkeley 0 21 21
Lawrence Livermore 0 124 124
Los Alamos 0 0 0
Other - UC 9 188 197
Other-Network UC n/a 3,681 3,681
_______ ______ _____
8,377 11,408 19,785
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 46,011 47,891 93,902
Davis 58,876 254 59,130
Irvine 2,676 0 2,676
Los Angeles 334 8,213 8,547
Riverside 1,809 5,262 7,071
San Diego 1,797 6,322 8,119
San Francisco 4,240 0 4,240
Santa Barbara 107 4,361 4,468
Santa Cruz 980 4,518 5,498
Lawrence Berkeley 0 128 128
Lawrence Livermore 0 1,073 1,073
Los Alamos 0 0 0
Other - UC 25 2,164 2,189
Other-Network UC n/a 38,518 38,518
_______ ______ _____
116,855 118,704 235,559
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.6
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) 8:57
Average session length (minutes:seconds) 13:52
Longest session recorded (minutes:seconds) 504:21
Average number of searches completed per session 3.1
Retrievals per search - median 10.0
Retrievals per search - average 1098.9
Retrievals per search - standard deviation 12343
Percent of searches completed with 0 results 22.5%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 63.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 17,633 30.3%
DISPLAY (excluding automatic displays) 22,595 38.8%
BROWSE 4 0.0%
HELP 971 1.7%
EXPLAIN 966 1.7%
SET/RESET 2,901 5.0%
SHOW 223 0.4%
ADD ON (AND, OR, AND NOT) 2,152 3.7%
LOGON or LOGOFF 7,320 12.6%
COMMENT 0 0.0%
SAVE 1,375 2.4%
USE 17 0.0%
OTHER 2,056 3.5%
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 5,834 30.3% 1,213 20.8% 21 156.6 751.1
TITLE WORD 2,949 15.3% 1,120 38.0% 8 513.7 3890.6
EXACT TITLE 154 0.8% 73 47.4% 2 99.0 516.1
KEYWORD 7,703 40.1% 1,357 17.6% 35 2114.3 19502.9
JOURNAL 759 3.9% 324 42.7% 407 7502.8 26505.4
EXACT JOURNAL 272 1.4% 108 39.7% 569 3430.8 7810.6
SOURCE 15 0.1% 10 66.7% 31 38.2 24.2
CONFERENCE 6 0.0% 3 50.0% 34 63.3 62.4
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 3 0.0% 0 0.0% 20 28.0 26.9
SUPERTAXA 1 0.0% 0 0.0% 8 8.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 16 0.1% 0 0.0% 20 46.1 47.1
PUBLICATION TYPE 2 0.0% 0 0.0% 16 16.0 5.7
DATE 31 0.2% 6 19.4% 77 620.9 1163.1
LANGUAGE 7 0.0% 0 0.0% 156 481.9 502.2
ADDED 9 0.0% 3 33.3% 19 15.2 8.2
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 72 0.4% 12 16.7% 29 885.3 4281.8
ACCESSION NO. 2 0.0% 2 100% 0 0.0 0.0
ISSN 5 0.0% 3 60.0% 11 10.5 4.9
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 709 3.7% 158 22.3% 5 275.7 4019.0
EXACT PE 167 0.9% 15 9.0% 4 30.3 145.1
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 506 2.6% 111 21.9% 25 1850.2 9506.8
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 1,649 9.4% 553 33.5% 6 183.4 1416.2
Single 15,842 90.6% 3,388 21.4% 30 1563.6 15064.5
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 4 100% 3 75.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
SHORT 86.2%
LONG 1.3%
TAGS 0.4%
FIELDS 1.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. First word of command is invalid 31.3%
2. NS command - no next screen 30.0%
3. FIND command with invalid index name 10.5%
4. PS command - no previous screen 6.1%
5. DISPLAY command contains invalid word 4.1%
6. Search term missing from search command 2.5%
7. Valid command at an inappropriate time 2.2%
8. Index invalid in current database 1.4%
9. DISPLAY command - no FIND results 0.8%
10. DATE search with unrecognized word 0.8%
11. All others 10.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 30.0%
2. GUIDE 16.9%
3. FIND 10.1%
4. COMMANDS 8.1%
5. INDEXES 6.7%
6. ADDON SEARCH 4.0%
7. BIOSIS DATABASE 3.9%
8. Unrecognized term 3.0%
9. DISPLAY 2.5%
10. MAIL 1.6%
11. All others 13.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.3%
2. First word of command is invalid 14.6%
3. FIND command with invalid index name 9.7%
4. DISPLAY command-first of >1 screen 9.4%
5. FIND command with zero results 5.2%
6. FIND command retrieves >1 book 5.2%
7. DISPLAY command - middle of >1 screen 4.9%
8. DISPLAY command-complete in one screen 4.8%
9. DISPLAY command - last of >1 screen 4.4%
10. NS command - no next screen 2.5%
11. All others 18.1%
Ten most frequent SHOW requests:
1. SEARCH 46.9%
2. HISTORY 39.8%
3. SETTINGS 4.1%
4. BIOSIS NEWS 2.6%
5. B902 2.0%
6. GLOSSARY 1.5%
7. MAIL STATUS 1.5%
8. PUBLICATION TYPES 0.5%
9. BIBLIOGRAPHIC SOFTWARE 0.5%
10. DISPLAY 0.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)