MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 10/27/01 through 11/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 47 234 281
Davis 118 5 123
Irvine 20 0 20
Los Angeles 0 48 48
Riverside 10 30 40
San Diego 9 68 77
San Francisco 31 0 31
Santa Barbara 0 25 25
Santa Cruz 0 26 26
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 2 31 33
Other-Network UC n/a 362 362
_______ ______ _____
237 840 1,077
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 949 2,804 30,566
BIO88 128 271 2,450
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 46 646
2-4 a.m. 1 1 12
4-6 a.m. 8 24 76
6-8 a.m. 42 100 1,517
8-10 a.m. 144 301 2,905
10-12 a.m. 211 616 4,913
12-2 p.m. 196 559 7,684
2-4 p.m. 217 621 7,470
4-6 p.m. 143 455 4,734
6-8 p.m. 62 192 1,935
8-10 p.m. 24 106 737
10-12 p.m. 22 54 387
__________ __________ __________ _________________
Total: 1,077 3,075 33,016
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 202 810 1,012
Davis 329 14 343
Irvine 105 0 105
Los Angeles 0 165 165
Riverside 39 90 129
San Diego 57 154 211
San Francisco 136 0 136
Santa Barbara 0 58 58
Santa Cruz 0 75 75
Lawrence Berkeley 0 16 16
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 4 51 55
Other-Network UC n/a 757 757
_______ ______ _____
872 2,203 3,075
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,818 11,594 13,412
Davis 4,975 129 5,104
Irvine 451 0 451
Los Angeles 0 1,117 1,117
Riverside 348 646 994
San Diego 176 1,754 1,930
San Francisco 901 0 901
Santa Barbara 0 952 952
Santa Cruz 0 627 627
Lawrence Berkeley 0 71 71
Lawrence Livermore 0 194 194
Los Alamos 0 0 0
Other - UC 4 677 681
Other-Network UC n/a 6,582 6,582
_______ ______ _____
8,673 24,343 33,016
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 4.9
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) 11:26
Average session length (minutes:seconds) 15:00
Longest session recorded (minutes:seconds) 329:41
Average number of searches completed per session 2.8
Retrievals per search - median 7.0
Retrievals per search - average 562.3
Retrievals per search - standard deviation 6012.2
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 71.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,750 30.5%
DISPLAY (excluding automatic displays) 3,430 38.1%
BROWSE 0 0.0%
HELP 100 1.1%
EXPLAIN 82 0.9%
SET/RESET 553 6.1%
SHOW 22 0.2%
ADD ON (AND, OR, AND NOT) 325 3.6%
LOGON or LOGOFF 1,155 12.8%
COMMENT 0 0.0%
SAVE 315 3.5%
USE 2 0.0%
OTHER 273 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 974 32.1% 180 18.5% 21 141.3 551.3
TITLE WORD 486 16.0% 224 46.1% 8 307.0 1516.8
EXACT TITLE 29 1.0% 17 58.6% 1 4.8 7.7
KEYWORD 1,111 36.6% 219 19.7% 37 949.6 5611.7
JOURNAL 143 4.7% 72 50.3% 77 6664.6 32744.7
EXACT JOURNAL 66 2.2% 31 47.0% 261 2067.8 5028.3
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 1 0.0% 0 0.0% 1,348 1348.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.1% 0 0.0% 9 22.7 29.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 7 0.2% 2 28.6% 11 93.8 168.9
LANGUAGE 8 0.3% 0 0.0% 27 189.3 468.6
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. 16 0.5% 3 18.8% 20 623.9 1959.9
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 92 3.0% 14 15.2% 3 9.2 17.1
EXACT PE 30 1.0% 2 6.7% 3 50.6 236.6
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 68 2.2% 11 16.2% 13 197.7 445.1
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 292 10.7% 91 31.2% 6 53.6 209.8
Single 2,434 89.3% 588 24.2% 27 859.8 7638.4
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 2.8%
SHORT 87.0%
LONG 0.9%
TAGS 0.0%
FIELDS 2.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.9%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. NS command - no next screen 34.9%
2. First word of command is invalid 28.3%
3. FIND command with invalid index name 9.7%
4. DISPLAY command contains invalid word 4.4%
5. PS command - no previous screen 4.4%
6. Valid command at an inappropriate time 2.5%
7. Search term missing from search command 1.9%
8. 1243 1.5%
9. DISPLAY command-record numbers too large 1.3%
10. DATE search with unrecognized word 1.3%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 30.5%
2. GUIDE 20.7%
3. FIND 7.3%
4. COMMANDS 6.1%
5. BIOSIS DATABASE 6.1%
6. Unrecognized term 6.1%
7. INDEXES 4.9%
8. ADDON SEARCH 3.7%
9. BIOSIS NEWS 2.4%
10. DISPLAY 2.4%
11. All others 9.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.0%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 13.7%
4. DISPLAY command-first of >1 screen 10.4%
5. FIND command with zero results 5.5%
6. PS command - no previous screen 4.9%
7. FIND command retrieves >1 book 4.9%
8. DISPLAY command - middle of >1 screen 3.8%
9. DISPLAY command-complete in one screen 2.7%
10. DISPLAY command contains invalid word 2.2%
11. All others 15.4%
Ten most frequent SHOW requests:
1. HISTORY 68.2%
2. SEARCH 18.2%
3. MAIL STATUS 9.1%
4. BIOSIS NEWS 4.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)