MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/01/02 through 01/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 146 1,204 1,350
Davis 948 8 956
Irvine 112 0 112
Los Angeles 4 301 305
Riverside 16 108 124
San Diego 91 283 374
San Francisco 186 0 186
Santa Barbara 9 90 99
Santa Cruz 7 117 124
Lawrence Berkeley 0 42 42
Lawrence Livermore 0 53 53
Los Alamos 0 0 0
Other - UC 14 102 116
Other-Network UC n/a 2,130 2,130
_______ ______ _____
1,533 4,438 5,971
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 5,230 16,270 141,252
BIO88 741 1,706 9,629
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 48 169 1,638
2-4 a.m. 74 173 1,624
4-6 a.m. 55 138 1,047
6-8 a.m. 130 315 2,450
8-10 a.m. 785 2,122 14,312
10-12 a.m. 1,240 3,577 24,720
12-2 p.m. 1,034 2,899 28,607
2-4 p.m. 1,254 3,803 30,110
4-6 p.m. 807 2,741 27,609
6-8 p.m. 290 1,145 10,093
8-10 p.m. 138 501 4,452
10-12 p.m. 116 393 4,219
__________ __________ __________ _________________
Total: 5,971 17,976 150,881
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 431 3,391 3,822
Davis 3,716 26 3,742
Irvine 354 0 354
Los Angeles 8 1,154 1,162
Riverside 24 425 449
San Diego 215 911 1,126
San Francisco 847 0 847
Santa Barbara 7 253 260
Santa Cruz 29 385 414
Lawrence Berkeley 0 102 102
Lawrence Livermore 0 253 253
Los Alamos 0 0 0
Other - UC 29 276 305
Other-Network UC n/a 5,140 5,140
_______ ______ _____
5,660 12,316 17,976
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,099 36,432 40,531
Davis 36,535 106 36,641
Irvine 2,714 0 2,714
Los Angeles 306 12,368 12,674
Riverside 169 2,835 3,004
San Diego 634 8,141 8,775
San Francisco 4,493 0 4,493
Santa Barbara 21 1,614 1,635
Santa Cruz 255 4,265 4,520
Lawrence Berkeley 0 946 946
Lawrence Livermore 0 4,964 4,964
Los Alamos 0 0 0
Other - UC 418 2,041 2,459
Other-Network UC n/a 27,525 27,525
_______ ______ _____
49,644 101,237 150,881
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 12.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.5
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 10:50
Average session length (minutes:seconds) 15:39
Longest session recorded (minutes:seconds) 887:05
Average number of searches completed per session 3.0
Retrievals per search - median 8.0
Retrievals per search - average 1435.4
Retrievals per search - standard deviation 37440
Percent of searches completed with 0 results 22.5%
Percent of searches entered that are long 2.7%
Percent of long searches completed
(includes partial results) 74.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 14,849 29.8%
DISPLAY (excluding automatic displays) 18,520 37.1%
BROWSE 6 0.0%
HELP 495 1.0%
EXPLAIN 464 0.9%
SET/RESET 2,949 5.9%
SHOW 101 0.2%
ADD ON (AND, OR, AND NOT) 3,127 6.3%
LOGON or LOGOFF 6,653 13.3%
COMMENT 1 0.0%
SAVE 1,185 2.4%
USE 9 0.0%
OTHER 1,509 3.0%
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 5,687 34.0% 1,123 19.7% 23 190.0 772.0
TITLE WORD 2,725 16.3% 1,013 37.2% 6 749.1 7883.3
EXACT TITLE 135 0.8% 77 57.0% 2 158.6 1001.6
KEYWORD 5,339 31.9% 956 17.9% 33 4309.2 74591.8
JOURNAL 721 4.3% 269 37.3% 413 5083.7 17968.8
EXACT JOURNAL 225 1.3% 81 36.0% 1,029 2828.8 5016.6
SOURCE 5 0.0% 4 80.0% 71 71.0 0.0
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 4 0.0% 1 25.0% 4 6.0 6.2
SUPERTAXA 8 0.0% 0 0.0% 12 11.8 6.1
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 5 0.0% 0 0.0% 12 12.0 9.1
PUBLICATION TYPE 1 0.0% 0 0.0% 19 19.0 0.0
DATE 93 0.6% 21 22.6% 6 57.7 147.1
LANGUAGE 25 0.1% 3 12.0% 6 108.9 301.2
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. 156 0.9% 33 21.2% 18 638.4 4327.6
ACCESSION NO. 44 0.3% 2 4.5% 1 1.0 0.0
ISSN 2 0.0% 0 0.0% 4,459 4459.0 4015.0
ISBN 2 0.0% 1 50.0% 106 106.0 0.0
PERIODICAL 806 4.8% 124 15.4% 5 122.8 1449.3
EXACT PE 173 1.0% 8 4.6% 3 17.6 55.9
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 585 3.5% 106 18.1% 11 1631.6 18694.2
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 1,883 12.8% 536 28.5% 6 70.7 357.9
Single 12,827 87.2% 2,715 21.2% 30 2425.0 49572.6
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 6 100% 5 83.3% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.0%
SHORT 81.1%
LONG 2.0%
TAGS 1.0%
FIELDS 3.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.4%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 30.2%
2. First word of command is invalid 29.4%
3. FIND command with invalid index name 9.7%
4. PS command - no previous screen 3.3%
5. DATE search with unrecognized word 3.2%
6. DISPLAY command contains invalid word 3.0%
7. DISPLAY command - no FIND results 2.7%
8. 1281 2.1%
9. Search term missing from search command 1.9%
10. NS of SHOW/EXP command-no next screen 1.8%
11. All others 12.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.2%
2. FIND 13.1%
3. LOCATE (BIO DB) 12.1%
4. INDEXES 8.4%
5. BIOSIS DATABASE 6.3%
6. COMMANDS 6.0%
7. Unrecognized term 4.5%
8. ADDON SEARCH 2.6%
9. DISPLAY 2.4%
10. MAIL 2.2%
11. All others 25.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.0%
2. First word of command is invalid 13.7%
3. FIND command with invalid index name 11.3%
4. DISPLAY command - middle of >1 screen 6.3%
5. DISPLAY command-first of >1 screen 6.2%
6. FIND command retrieves >1 book 4.1%
7. FIND command with zero results 3.3%
8. DISPLAY command-complete in one screen 2.8%
9. 1281 2.6%
10. DISPLAY command - last of >1 screen 2.2%
11. All others 25.7%
Ten most frequent SHOW requests:
1. HISTORY 64.8%
2. SEARCH 19.8%
3. SETTINGS 5.5%
4. BIOSIS NEWS 5.5%
5. GLOSSARY 3.3%
6. MAIL STATUS 1.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)