MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 09/22/01 through 09/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 49 250 299
Davis 151 6 157
Irvine 26 0 26
Los Angeles 0 77 77
Riverside 8 64 72
San Diego 14 22 36
San Francisco 29 0 29
Santa Barbara 4 62 66
Santa Cruz 3 13 16
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 459 459
_______ ______ _____
284 979 1,263
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,128 3,291 26,330
BIO88 135 295 1,949
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 60 579
2-4 a.m. 2 54 267
4-6 a.m. 14 27 351
6-8 a.m. 30 72 324
8-10 a.m. 161 366 2,518
10-12 a.m. 271 622 5,574
12-2 p.m. 207 534 4,427
2-4 p.m. 274 755 6,479
4-6 p.m. 170 506 4,524
6-8 p.m. 65 375 1,224
8-10 p.m. 36 166 1,728
10-12 p.m. 16 49 284
__________ __________ __________ _________________
Total: 1,263 3,586 28,279
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 172 944 1,116
Davis 470 17 487
Irvine 65 0 65
Los Angeles 0 214 214
Riverside 20 151 171
San Diego 63 68 131
San Francisco 166 0 166
Santa Barbara 3 285 288
Santa Cruz 4 48 52
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 31 31
Other-Network UC n/a 845 845
_______ ______ _____
963 2,623 3,586
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,867 6,867 8,734
Davis 3,800 74 3,874
Irvine 296 0 296
Los Angeles 0 2,480 2,480
Riverside 153 1,786 1,939
San Diego 405 644 1,049
San Francisco 1,313 0 1,313
Santa Barbara 112 2,097 2,209
Santa Cruz 173 597 770
Lawrence Berkeley 0 129 129
Lawrence Livermore 0 131 131
Los Alamos 0 0 0
Other - UC 0 503 503
Other-Network UC n/a 4,852 4,852
_______ ______ _____
8,119 20,160 28,279
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 4.7
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) 9:36
Average session length (minutes:seconds) 14:15
Longest session recorded (minutes:seconds) 477:59
Average number of searches completed per session 2.8
Retrievals per search - median 7.0
Retrievals per search - average 777.4
Retrievals per search - standard deviation 8366.2
Percent of searches completed with 0 results 24.2%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 75.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,022 31.1%
DISPLAY (excluding automatic displays) 3,132 32.2%
BROWSE 0 0.0%
HELP 120 1.2%
EXPLAIN 129 1.3%
SET/RESET 666 6.9%
SHOW 32 0.3%
ADD ON (AND, OR, AND NOT) 564 5.8%
LOGON or LOGOFF 1,291 13.3%
COMMENT 0 0.0%
SAVE 455 4.7%
USE 1 0.0%
OTHER 306 3.1%
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 1,217 35.7% 223 18.3% 22 97.6 314.0
TITLE WORD 672 19.7% 254 37.8% 8 1171.7 11703.4
EXACT TITLE 26 0.8% 13 50.0% 2 7.8 12.4
KEYWORD 1,028 30.1% 192 18.7% 32 1824.6 12782.7
JOURNAL 126 3.7% 56 44.4% 436 6871.3 26834.8
EXACT JOURNAL 87 2.6% 36 41.4% 586 2371.4 4035.9
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 24 0.7% 3 12.5% 22 83.4 105.7
LANGUAGE 2 0.1% 0 0.0% 3,646 3646.0 2497.5
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. 3 0.1% 0 0.0% 19 22.7 19.8
ACCESSION NO. 3 0.1% 3 100% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 74 2.2% 13 17.6% 4 19.8 37.8
EXACT PE 24 0.7% 1 4.2% 3 14.6 49.2
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 123 3.6% 20 16.3% 6 107.5 339.2
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 379 12.6% 109 28.8% 6 83.6 408.8
Single 2,619 87.4% 591 22.6% 29 1326.8 11049.8
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 2.6%
SHORT 86.7%
LONG 1.2%
TAGS 0.7%
FIELDS 2.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. First word of command is invalid 34.7%
2. NS command - no next screen 28.9%
3. FIND command with invalid index name 9.5%
4. PS command - no previous screen 4.4%
5. DISPLAY command contains invalid word 2.8%
6. Search term missing from search command 2.8%
7. DATE search with unrecognized word 1.7%
8. NS of SHOW/EXP command-no next screen 1.6%
9. DISPLAY command-record numbers too large 1.2%
10. Valid command at an inappropriate time 1.0%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 21.7%
2. GUIDE 17.8%
3. INDEXES 13.2%
4. BIOSIS DATABASE 10.1%
5. FIND 4.7%
6. Unrecognized term 4.7%
7. DISPLAY 3.9%
8. DATABASES 3.9%
9. ADDON SEARCH 3.9%
10. COMMANDS 3.1%
11. All others 13.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.5%
2. First word of command is invalid 17.7%
3. FIND command with invalid index name 9.2%
4. DISPLAY command-first of >1 screen 8.4%
5. DISPLAY command - middle of >1 screen 7.6%
6. FIND command retrieves >1 book 4.0%
7. DISPLAY command - last of >1 screen 3.6%
8. 799 2.8%
9. F/BR command with invalid search term 2.0%
10. FIND command with zero results 2.0%
11. All others 16.1%
Ten most frequent SHOW requests:
1. HISTORY 77.4%
2. GLOSSARY 6.5%
3. 0408 3.2%
4. SYSTEM NEWS 3.2%
5. LIBRARY LOCATIONS 3.2%
6. SEARCH 3.2%
7. UPDATE 3.2%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)