MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 10/20/01 through 10/26/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 67 296 363
Davis 159 19 178
Irvine 7 0 7
Los Angeles 1 73 74
Riverside 9 41 50
San Diego 11 56 67
San Francisco 27 0 27
Santa Barbara 0 7 7
Santa Cruz 3 31 34
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 1 41 42
Other-Network UC n/a 487 487
_______ ______ _____
285 1,052 1,337
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,186 3,317 32,419
BIO88 151 295 1,407
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 4 25
2-4 a.m. 9 18 118
4-6 a.m. 5 12 143
6-8 a.m. 44 108 709
8-10 a.m. 183 450 4,073
10-12 a.m. 290 774 6,003
12-2 p.m. 242 676 5,559
2-4 p.m. 238 670 7,778
4-6 p.m. 175 449 5,342
6-8 p.m. 78 203 1,803
8-10 p.m. 39 172 1,617
10-12 p.m. 30 76 656
__________ __________ __________ _________________
Total: 1,337 3,612 33,826
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 178 841 1,019
Davis 436 36 472
Irvine 26 0 26
Los Angeles 13 311 324
Riverside 39 81 120
San Diego 51 198 249
San Francisco 184 0 184
Santa Barbara 0 45 45
Santa Cruz 4 81 85
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 1 80 81
Other-Network UC n/a 1,002 1,002
_______ ______ _____
932 2,680 3,612
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,175 7,756 8,931
Davis 4,761 680 5,441
Irvine 381 0 381
Los Angeles 14 3,262 3,276
Riverside 197 3,502 3,699
San Diego 212 2,529 2,741
San Francisco 839 0 839
Santa Barbara 0 496 496
Santa Cruz 18 597 615
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 17 17
Los Alamos 0 0 0
Other - UC 0 563 563
Other-Network UC n/a 6,827 6,827
_______ ______ _____
7,597 26,229 33,826
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 5.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:00
Average session length (minutes:seconds) 13:09
Longest session recorded (minutes:seconds) 408:31
Average number of searches completed per session 2.7
Retrievals per search - median 8.0
Retrievals per search - average 987.5
Retrievals per search - standard deviation 10596
Percent of searches completed with 0 results 23.2%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 69.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,171 30.5%
DISPLAY (excluding automatic displays) 3,688 35.5%
BROWSE 1 0.0%
HELP 188 1.8%
EXPLAIN 182 1.8%
SET/RESET 734 7.1%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 441 4.2%
LOGON or LOGOFF 1,296 12.5%
COMMENT 0 0.0%
SAVE 325 3.1%
USE 3 0.0%
OTHER 342 3.3%
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 1,267 35.6% 236 18.6% 22 112.6 425.9
TITLE WORD 614 17.3% 234 38.1% 8 1117.6 6830.3
EXACT TITLE 33 0.9% 19 57.6% 2 3.6 5.8
KEYWORD 958 26.9% 172 18.0% 31 2479.7 18203.4
JOURNAL 135 3.8% 65 48.1% 510 11202.8 39982.9
EXACT JOURNAL 75 2.1% 36 48.0% 407 2494.4 5184.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 2 0.1% 2 100% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 1 0.0% 0 0.0% 61 61.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.1% 0 0.0% 5 16.3 19.6
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 18 0.5% 8 44.4% 8 18.4 28.2
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. 32 0.9% 1 3.1% 216 1729.9 4373.8
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 2 0.1% 0 0.0% 62 62.0 52.3
PERIODICAL 182 5.1% 23 12.6% 4 235.3 1464.5
EXACT PE 55 1.5% 3 5.5% 3 11.6 33.1
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 176 5.0% 33 18.8% 15 347.6 1854.8
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 392 12.5% 118 30.1% 6 56.0 208.6
Single 2,748 87.5% 593 21.6% 27 1615.9 13619.3
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 1 100% 1 100% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 83.2%
LONG 1.5%
TAGS 0.2%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 8.2%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. First word of command is invalid 31.1%
2. NS command - no next screen 27.6%
3. FIND command with invalid index name 14.5%
4. PS command - no previous screen 3.8%
5. DISPLAY command contains invalid word 3.2%
6. Search term missing from search command 2.9%
7. DATE search with unrecognized word 2.2%
8. Valid command at an inappropriate time 1.5%
9. NS of SHOW/EXP command-no next screen 1.2%
10. DISPLAY command-record numbers too large 1.1%
11. All others 10.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 19.2%
2. GUIDE 17.0%
3. FIND 13.2%
4. INDEXES 8.8%
5. COMMANDS 7.1%
6. BIOSIS DATABASE 2.7%
7. Unrecognized term 2.7%
8. ADDON SEARCH 2.7%
9. BIOSIS NEWS 2.2%
10. DISPLAY 2.2%
11. All others 22.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.7%
2. First word of command is invalid 17.6%
3. FIND command with invalid index name 14.1%
4. DISPLAY command-first of >1 screen 11.6%
5. DISPLAY command - middle of >1 screen 6.2%
6. FIND command retrieves >1 book 3.5%
7. DISPLAY command-complete in one screen 3.5%
8. FIND command with zero results 3.2%
9. NS command - no next screen 2.4%
10. PS command - no previous screen 1.9%
11. All others 16.2%
Ten most frequent SHOW requests:
1. SEARCH 29.4%
2. SETTINGS 17.6%
3. HISTORY 17.6%
4. SYSTEM NEWS 11.8%
5. BIOSIS NEWS 5.9%
6. GLOSSARY 5.9%
7. SYSTEM6 NEWS 5.9%
8. 5260 5.9%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)