MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/08/02 through 06/14/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 9 126 135
Davis 74 3 77
Irvine 17 0 17
Los Angeles 1 60 61
Riverside 1 30 31
San Diego 15 45 60
San Francisco 32 0 32
Santa Barbara 1 5 6
Santa Cruz 2 12 14
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 0 37 37
Other-Network UC n/a 147 147
_______ ______ _____
152 474 626
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 561 1,479 16,084
BIO88 65 166 853
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 27 314
2-4 a.m. 9 18 88
4-6 a.m. 7 14 114
6-8 a.m. 17 42 560
8-10 a.m. 69 223 2,358
10-12 a.m. 149 349 2,964
12-2 p.m. 112 293 2,895
2-4 p.m. 97 209 2,285
4-6 p.m. 94 285 2,910
6-8 p.m. 34 105 1,002
8-10 p.m. 17 48 504
10-12 p.m. 12 32 943
__________ __________ __________ _________________
Total: 626 1,645 16,937
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 35 323 358
Davis 195 8 203
Irvine 39 0 39
Los Angeles 17 167 184
Riverside 4 70 74
San Diego 38 135 173
San Francisco 115 0 115
Santa Barbara 2 37 39
Santa Cruz 2 36 38
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 12 12
Los Alamos 0 0 0
Other - UC 0 70 70
Other-Network UC n/a 333 333
_______ ______ _____
447 1,198 1,645
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 158 3,562 3,720
Davis 2,051 9 2,060
Irvine 369 0 369
Los Angeles 876 1,709 2,585
Riverside 2 399 401
San Diego 1,015 1,367 2,382
San Francisco 669 0 669
Santa Barbara 2 557 559
Santa Cruz 29 589 618
Lawrence Berkeley 0 33 33
Lawrence Livermore 0 25 25
Los Alamos 0 0 0
Other - UC 0 1,294 1,294
Other-Network UC n/a 2,222 2,222
_______ ______ _____
5,171 11,766 16,937
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 2.4
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) 8:05
Average session length (minutes:seconds) 12:53
Longest session recorded (minutes:seconds) 240:18
Average number of searches completed per session 2.6
Retrievals per search - median 8.0
Retrievals per search - average 868.1
Retrievals per search - standard deviation 6882.7
Percent of searches completed with 0 results 21.9%
Percent of searches entered that are long 1.8%
Percent of long searches completed
(includes partial results) 83.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,438 29.3%
DISPLAY (excluding automatic displays) 1,832 37.3%
BROWSE 0 0.0%
HELP 41 0.8%
EXPLAIN 49 1.0%
SET/RESET 268 5.5%
SHOW 13 0.3%
ADD ON (AND, OR, AND NOT) 207 4.2%
LOGON or LOGOFF 765 15.6%
COMMENT 0 0.0%
SAVE 104 2.1%
USE 0 0.0%
OTHER 192 3.9%
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 560 34.0% 114 20.4% 20 98.4 418.4
TITLE WORD 263 16.0% 94 35.7% 10 387.8 1408.5
EXACT TITLE 17 1.0% 9 52.9% 2 114.0 288.6
KEYWORD 503 30.6% 81 16.1% 38 2354.9 11951.0
JOURNAL 46 2.8% 24 52.2% 89 7999.0 21470.6
EXACT JOURNAL 47 2.9% 30 63.8% 84 2952.2 5813.3
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 0 0.0% 0 0.0% 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 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 9 0.5% 2 22.2% 4 28.6 60.9
LANGUAGE 5 0.3% 0 0.0% 1,404 1090.2 752.1
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. 7 0.4% 3 42.9% 26 27.8 12.8
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 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 80 4.9% 9 11.2% 4 10.4 19.0
EXACT PE 43 2.6% 3 7.0% 3 5.6 9.3
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 66 4.0% 21 31.8% 8 42.0 118.9
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 201 14.1% 69 34.3% 8 69.5 255.0
Single 1,229 85.9% 242 19.7% 24 1337.9 8599.3
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 3.7%
SHORT 84.8%
LONG 1.5%
TAGS 0.8%
FIELDS 0.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.2%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. NS command - no next screen 35.7%
2. First word of command is invalid 27.8%
3. FIND command with invalid index name 7.0%
4. DATE search with unrecognized word 5.9%
5. DISPLAY command - no FIND results 4.6%
6. DISPLAY command contains invalid word 3.3%
7. PS command - no previous screen 3.3%
8. 48 2.0%
9. Search term missing from search command 2.0%
10. Index invalid in current database 1.1%
11. All others 7.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 32.7%
2. BIOSIS DATABASE 14.3%
3. FIND 10.2%
4. INDEXES 8.2%
5. LOCATE (BIO DB) 6.1%
6. COMMANDS 4.1%
7. DATABASES 4.1%
8. MAGS TEXT 2.0%
9. B321 2.0%
10. B331 2.0%
11. All others 14.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 41.1%
2. First word of command is invalid 12.2%
3. FIND command with zero results 10.0%
4. FIND command with invalid index name 6.7%
5. DISPLAY command-first of >1 screen 5.6%
6. DISPLAY command - middle of >1 screen 5.6%
7. DISPLAY command contains invalid word 3.3%
8. NS command - no next screen 2.2%
9. 243 2.2%
10. Add-on search retrieves >1 record 2.2%
11. All others 8.9%
Ten most frequent SHOW requests:
1. HISTORY 76.9%
2. BIOSIS NEWS 7.7%
3. SYSTEM NEWS 7.7%
4. SEARCH 7.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)