MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/01/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 184 785 969
Davis 643 20 663
Irvine 160 0 160
Los Angeles 3 265 268
Riverside 18 69 87
San Diego 79 217 296
San Francisco 152 0 152
Santa Barbara 6 107 113
Santa Cruz 9 184 193
Lawrence Berkeley 0 28 28
Lawrence Livermore 0 25 25
Los Alamos 0 0 0
Other - UC 0 117 117
Other-Network UC n/a 640 640
_______ ______ _____
1,254 2,457 3,711
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 3,415 10,568 118,877
BIO88 296 803 11,568
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 34 118 1,798
2-4 a.m. 55 103 842
4-6 a.m. 11 39 817
6-8 a.m. 88 234 2,043
8-10 a.m. 390 1,068 9,031
10-12 a.m. 673 2,218 21,380
12-2 p.m. 633 1,971 36,555
2-4 p.m. 732 2,198 23,113
4-6 p.m. 640 1,879 19,135
6-8 p.m. 265 842 9,026
8-10 p.m. 114 433 3,995
10-12 p.m. 76 268 2,710
__________ __________ __________ _________________
Total: 3,711 11,371 130,445
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 654 2,255 2,909
Davis 2,368 41 2,409
Irvine 524 0 524
Los Angeles 26 679 705
Riverside 26 207 233
San Diego 182 703 885
San Francisco 715 0 715
Santa Barbara 8 281 289
Santa Cruz 25 520 545
Lawrence Berkeley 0 79 79
Lawrence Livermore 0 81 81
Los Alamos 0 0 0
Other - UC 1 275 276
Other-Network UC n/a 1,721 1,721
_______ ______ _____
4,529 6,842 11,371
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,565 29,775 35,340
Davis 39,697 231 39,928
Irvine 4,256 0 4,256
Los Angeles 226 8,443 8,669
Riverside 146 1,306 1,452
San Diego 2,034 8,427 10,461
San Francisco 3,902 0 3,902
Santa Barbara 91 1,675 1,766
Santa Cruz 76 7,268 7,344
Lawrence Berkeley 0 863 863
Lawrence Livermore 0 685 685
Los Alamos 0 0 0
Other - UC 0 4,478 4,478
Other-Network UC n/a 11,301 11,301
_______ ______ _____
55,993 74,452 130,445
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) 9:11
Average session length (minutes:seconds) 13:42
Longest session recorded (minutes:seconds) 718:58
Average number of searches completed per session 3.0
Retrievals per search - median 11.0
Retrievals per search - average 1466.4
Retrievals per search - standard deviation 14157
Percent of searches completed with 0 results 21.1%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 67.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,478 28.4%
DISPLAY (excluding automatic displays) 12,137 36.3%
BROWSE 10 0.0%
HELP 440 1.3%
EXPLAIN 411 1.2%
SET/RESET 1,335 4.0%
SHOW 71 0.2%
ADD ON (AND, OR, AND NOT) 1,893 5.7%
LOGON or LOGOFF 5,209 15.6%
COMMENT 0 0.0%
SAVE 1,253 3.8%
USE 1 0.0%
OTHER 1,185 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 3,223 30.7% 640 19.9% 23 150.3 562.2
TITLE WORD 1,468 14.0% 513 34.9% 17 1607.8 12455.4
EXACT TITLE 89 0.8% 54 60.7% 1 6.8 16.3
KEYWORD 4,241 40.4% 728 17.2% 38 2954.7 21321.2
JOURNAL 381 3.6% 136 35.7% 676 10341.6 36349.1
EXACT JOURNAL 134 1.3% 55 41.0% 559 3530.4 7555.0
SOURCE 6 0.1% 4 66.7% 1 1.0 0.0
CONFERENCE 3 0.0% 0 0.0% 941 712.7 484.7
BIOSYS NAMES 1 0.0% 1 100% 0 0.0 0.0
BIOSYS CODES 5 0.0% 0 0.0% 47 40.0 24.1
SUPERTAXA 2 0.0% 0 0.0% 27 26.5 2.1
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 6 0.1% 0 0.0% 43 40.5 21.4
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 37 0.4% 12 32.4% 4 10.7 20.0
LANGUAGE 6 0.1% 0 0.0% 25 28.7 16.7
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. 59 0.6% 6 10.2% 50 418.7 1958.2
ACCESSION NO. 8 0.1% 3 37.5% 1 1.0 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 376 3.6% 49 13.0% 3 90.5 766.5
EXACT PE 148 1.4% 21 14.2% 3 117.2 1143.9
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 305 2.9% 58 19.0% 14 187.9 861.9
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 1,038 11.0% 299 28.8% 7 60.9 376.0
Single 8,372 89.0% 1,666 19.9% 35 2257.8 17693.0
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 10 100% 7 70.0% 1 8.0 12.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 86.5%
LONG 1.3%
TAGS 0.6%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.6%
Ten most frequent errors:
1. NS command - no next screen 31.7%
2. First word of command is invalid 26.4%
3. FIND command with invalid index name 10.7%
4. DISPLAY command - no FIND results 3.9%
5. DATE search with unrecognized word 3.6%
6. DISPLAY command contains invalid word 3.5%
7. PS command - no previous screen 3.4%
8. Search term missing from search command 2.5%
9. Valid command at an inappropriate time 2.2%
10. NS of SHOW/EXP command-no next screen 1.0%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.6%
2. LOCATE (BIO DB) 20.2%
3. FIND 10.9%
4. COMMANDS 8.0%
5. INDEXES 5.1%
6. ADDON SEARCH 4.9%
7. BIOSIS DATABASE 4.1%
8. Unrecognized term 3.9%
9. DISPLAY 1.9%
10. Unrecognized term-reminders off 1.5%
11. All others 15.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.6%
2. First word of command is invalid 15.5%
3. FIND command with invalid index name 9.3%
4. DISPLAY command-first of >1 screen 8.2%
5. DISPLAY command - middle of >1 screen 7.6%
6. FIND command with zero results 5.4%
7. FIND command retrieves >1 book 4.9%
8. DISPLAY command-complete in one screen 3.2%
9. DISPLAY command - last of >1 screen 3.2%
10. NS command - no next screen 2.0%
11. All others 18.1%
Ten most frequent SHOW requests:
1. HISTORY 53.8%
2. SEARCH 30.8%
3. UPDATE 10.8%
4. SETTINGS 1.5%
5. GLOSSARY 1.5%
6. MAIL STATUS 1.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)