MELVYL ABI DATABASE TELNET STATISTICS
Time period: 03/01/00 through 03/31/00
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
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Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 61 479 540
Davis 161 5 166
Irvine 180 0 180
Los Angeles 19 206 225
Riverside 165 9 174
San Diego 28 33 61
San Francisco 35 0 35
Santa Barbara 42 40 82
Santa Cruz 61 14 75
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 15 13 28
Other-Network UC n/a 362 362
_______ ______ _____
767 1,171 1,938
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 23 62 997
2-4 a.m. 9 27 497
4-6 a.m. 14 57 621
6-8 a.m. 39 81 1,017
8-10 a.m. 189 527 6,042
10-12 a.m. 337 951 11,918
12-2 p.m. 369 1,038 13,377
2-4 p.m. 468 1,478 21,870
4-6 p.m. 277 999 13,717
6-8 p.m. 92 233 3,126
8-10 p.m. 77 292 4,692
10-12 p.m. 44 225 2,540
__________ __________ __________ _________________
Total: 1,938 5,970 80,414
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 231 1,617 1,848
Davis 419 7 426
Irvine 578 0 578
Los Angeles 37 662 699
Riverside 608 51 659
San Diego 96 100 196
San Francisco 156 0 156
Santa Barbara 88 112 200
Santa Cruz 184 39 223
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 46 51 97
Other-Network UC n/a 849 849
_______ ______ _____
2,443 3,527 5,970
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,507 28,528 30,035
Davis 3,080 72 3,152
Irvine 6,028 0 6,028
Los Angeles 287 8,837 9,124
Riverside 6,163 1,239 7,402
San Diego 1,038 897 1,935
San Francisco 2,629 0 2,629
Santa Barbara 903 1,757 2,660
Santa Cruz 1,789 901 2,690
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 140 140
Los Alamos 0 0 0
Other - UC 411 1,211 1,622
Other-Network UC n/a 12,997 12,997
_______ ______ _____
23,835 56,579 80,414
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 2.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 10:31
Average session length (minutes:seconds) 16:02
Longest session recorded (minutes:seconds) 871:05
Average number of searches completed per session 3.1
Retrievals per search - median 7.0
Retrievals per search - average 1282.5
Retrievals per search - standard deviation 9678.0
Percent of searches completed with 0 results 27.2%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 60.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,334 23.4%
DISPLAY (excluding automatic displays) 11,131 48.7%
BROWSE 16 0.1%
SELECT 4 0.0%
HELP 416 1.8%
EXPLAIN 366 1.6%
SET/RESET 834 3.7%
SHOW 117 0.5%
ADD ON (AND, OR, AND NOT) 634 2.8%
LOGON or LOGOFF 2,412 10.6%
COMMENT 0 0.0%
SAVE 839 3.7%
USE 9 0.0%
OTHER 741 3.2%
2.1 Article Text
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DISPLAY TEXT commands 1,464
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 245
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 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 1,125 19.7% 247 22.0% 10 55.1 190.2
TITLE WORD 1,065 18.6% 382 35.9% 7 64.0 203.3
EXACT TITLE 52 0.9% 27 51.9% 2 7.6 10.9
JOURNAL 278 4.9% 81 29.1% 485 2845.3 7529.7
EXACT JOURNAL 196 3.4% 66 33.7% 579 2874.7 6954.7
SUBJECT 600 10.5% 338 56.3% 626 6738.8 17056.1
EXACT SUBJECT 61 1.1% 17 27.9% 333 7204.1 15333.2
KEYWORD 1,910 33.4% 292 15.3% 71 2191.6 15546.7
PUB TYPE 35 0.6% 3 8.6% 21 77.9 169.3
DATE 82 1.4% 23 28.0% 9 775.2 2784.0
ADDED 14 0.2% 2 14.3% 10,730 8742.5 4259.9
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 10 0.2% 0 0.0% 18 2575.6 8089.3
SUBJ CATEGORY 2 0.0% 0 0.0% 114 113.5 113.8
COMPANY NAME 144 2.5% 55 38.2% 31 294.5 1395.0
EX COMPANY NAME 11 0.2% 4 36.4% 19 900.7 2102.3
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 171 171.0 0.0
PERIODICAL 93 1.6% 24 25.8% 10 209.5 848.1
EXACT PE 20 0.3% 4 20.0% 2 69.2 142.3
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 20 0.3% 2 10.0% 92 838.6 1513.9
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 417 7.9% 100 24.0% 7 247.7 1423.5
Single 4,879 92.1% 1,366 28.0% 35 1918.7 12017.8
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:
SUBJECT 16 100% 6 37.5% 3 11.7 18.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 90.0%
LONG 0.6%
TAGS 0.0%
FIELDS 2.0%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 3.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. First word of command is invalid 33.8%
2. NS command - no next screen 28.3%
3. FIND command with invalid index name 9.6%
4. DISPLAY command contains invalid word 5.7%
5. PS command - no previous screen 4.5%
6. Valid command at an inappropriate time 1.7%
7. DISPLAY command-record numbers too large 1.6%
8. Search term missing from search command 1.4%
9. DISPLAY command - no FIND results 1.4%
10. BROWSE command with invalid index name 0.8%
11. All others 11.1%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 21.3%
2. LOCATE (ARTICLE DBS) 15.3%
3. FIND (ABI DB) 6.3%
4. COMMANDS (ABI/PSY DBS) 4.9%
5. Unrecognized term 4.9%
6. INDEXES (ABI DB) 4.4%
7. DISPLAY (ABI DB) 4.1%
8. ADDON SEARCH 4.1%
9. ABI/INFORM DB 3.6%
10. MAIL 3.6%
11. All others 27.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.6%
2. First word of command is invalid 17.5%
3. FIND command with invalid index name 9.5%
4. DISPLAY command - middle of >1 screen 8.2%
5. DISPLAY command-first of >1 screen 5.9%
6. DISPLAY command-complete in one screen 5.4%
7. FIND command with zero results 5.1%
8. FIND command retrieves >1 book 4.7%
9. PS command - no previous screen 2.8%
10. DISPLAY command - last of >1 screen 2.7%
11. All others 17.6%
Ten most frequent SHOW requests:
1. HISTORY 37.8%
2. MAIL STATUS 24.3%
3. SEARCH 23.4%
4. MAIL SETTINGS 5.4%
5. GLOSSARY 4.5%
6. LOCATION 0.9%
7. SYSTEM NEWS 0.9%
8. LIBRARY NEWS 0.9%
9. DISPLAY 0.9%
10. DLA BULLETIN 0.9%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)