MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/01/01 through 12/07/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 78 275 353
Davis 167 10 177
Irvine 13 0 13
Los Angeles 0 45 45
Riverside 9 29 38
San Diego 9 35 44
San Francisco 40 0 40
Santa Barbara 4 22 26
Santa Cruz 0 20 20
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 27 27
Los Alamos 0 0 0
Other - UC 0 35 35
Other-Network UC n/a 348 348
_______ ______ _____
320 853 1,173
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,015 3,085 27,241
BIO88 158 324 2,078
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 27 117
2-4 a.m. 3 5 33
4-6 a.m. 1 7 172
6-8 a.m. 37 116 718
8-10 a.m. 170 352 3,584
10-12 a.m. 288 746 5,555
12-2 p.m. 183 552 4,578
2-4 p.m. 191 640 5,473
4-6 p.m. 178 508 4,483
6-8 p.m. 67 231 2,599
8-10 p.m. 25 114 563
10-12 p.m. 26 111 1,444
__________ __________ __________ _________________
Total: 1,173 3,409 29,319
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 309 910 1,219
Davis 673 10 683
Irvine 43 0 43
Los Angeles 0 117 117
Riverside 42 71 113
San Diego 64 86 150
San Francisco 186 0 186
Santa Barbara 5 53 58
Santa Cruz 0 48 48
Lawrence Berkeley 0 21 21
Lawrence Livermore 0 58 58
Los Alamos 0 0 0
Other - UC 0 45 45
Other-Network UC n/a 668 668
_______ ______ _____
1,322 2,087 3,409
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,576 9,094 11,670
Davis 7,098 22 7,120
Irvine 532 0 532
Los Angeles 0 1,254 1,254
Riverside 82 1,100 1,182
San Diego 101 900 1,001
San Francisco 695 0 695
Santa Barbara 16 370 386
Santa Cruz 0 752 752
Lawrence Berkeley 0 198 198
Lawrence Livermore 0 130 130
Los Alamos 0 0 0
Other - UC 0 333 333
Other-Network UC n/a 4,066 4,066
_______ ______ _____
11,100 18,219 29,319
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 6.9
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) 9:21
Average session length (minutes:seconds) 13:58
Longest session recorded (minutes:seconds) 369:27
Average number of searches completed per session 2.9
Retrievals per search - median 7.0
Retrievals per search - average 3011.7
Retrievals per search - standard deviation 77832
Percent of searches completed with 0 results 23.9%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 84.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,993 29.7%
DISPLAY (excluding automatic displays) 4,088 40.6%
BROWSE 1 0.0%
HELP 109 1.1%
EXPLAIN 104 1.0%
SET/RESET 616 6.1%
SHOW 33 0.3%
ADD ON (AND, OR, AND NOT) 416 4.1%
LOGON or LOGOFF 1,207 12.0%
COMMENT 0 0.0%
SAVE 195 1.9%
USE 3 0.0%
OTHER 312 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 1,029 30.4% 204 19.8% 20 109.1 373.2
TITLE WORD 506 14.9% 198 39.1% 5 243.4 1016.7
EXACT TITLE 39 1.2% 25 64.1% 2 4.6 8.6
KEYWORD 1,269 37.5% 244 19.2% 28 9076.5 141413
JOURNAL 148 4.4% 65 43.9% 170 4996.0 13429.7
EXACT JOURNAL 46 1.4% 19 41.3% 76 2413.0 3835.3
SOURCE 1 0.0% 1 100% 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 1 0.0% 0 0.0% 44 44.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 2 0.1% 0 0.0% 17 17.0 21.2
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 28 0.8% 11 39.3% 30 39.9 45.2
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. 1 0.0% 0 0.0% 6 6.0 0.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 1 50.0% 14,439 14439.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 178 5.3% 37 20.8% 7 249.1 1266.5
EXACT PE 10 0.3% 0 0.0% 5 49.8 105.9
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 127 3.7% 25 19.7% 9 163.5 784.5
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 362 12.1% 107 29.6% 7 83.0 502.1
Single 2,619 87.9% 601 22.9% 25 4942.2 100891
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 2.4%
SHORT 85.6%
LONG 1.0%
TAGS 0.1%
FIELDS 2.9%
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 8.9%
Ten most frequent errors:
1. NS command - no next screen 31.5%
2. First word of command is invalid 31.4%
3. FIND command with invalid index name 9.2%
4. PS command - no previous screen 5.1%
5. DISPLAY command contains invalid word 3.2%
6. Search term missing from search command 2.4%
7. Valid command at an inappropriate time 2.1%
8. Max. # of ports to a Z39 db are in use 2.0%
9. DISPLAY command - no FIND results 1.2%
10. Index invalid in current database 1.1%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 30.8%
2. GUIDE 23.1%
3. COMMANDS 6.7%
4. BIOSIS DATABASE 6.7%
5. FIND 4.8%
6. Unrecognized term 4.8%
7. ADDON SEARCH 4.8%
8. INDEXES 3.8%
9. DATABASES 2.9%
10. B321 1.0%
11. All others 10.6%
Ten most frequent HELP situations:
1. First word of command is invalid 22.1%
2. Help requested from SET DB command 19.2%
3. DISPLAY command-first of >1 screen 9.9%
4. FIND command with invalid index name 8.9%
5. DISPLAY command - middle of >1 screen 7.5%
6. FIND command retrieves >1 book 7.0%
7. FIND command with zero results 4.7%
8. DISPLAY command-complete in one screen 4.2%
9. 3 HELP commands issued from same code 2.3%
10. Valid command at an inappropriate time 1.4%
11. All others 12.7%
Ten most frequent SHOW requests:
1. SEARCH 35.7%
2. HISTORY 32.1%
3. UPDATE 25.0%
4. BIOSIS NEWS 3.6%
5. DATABASES 3.6%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)