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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
5 l- e; e4 s+ U7 ^0 Fto do-business ) ^) W: |/ ^4 n  {3 C; \
rt random 360
( g+ g3 ?  E6 z: J fd 1
6 O& e) y6 p% G ifelse(other turtles-here != nobody)[
) O6 }' @4 R1 p( B; K8 j4 I! Z( y   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.8 H/ P' ~8 Z) E2 Z- |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 M+ E: c: l. c# T% i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 D& b" ^9 o9 f/ Q5 M- _, Z8 g$ m. j0 R+ l
   set [trade-record-one-len] of self length [trade-record-one] of self
6 X( J( [& C1 o8 E- j   set trade-record-current( list (timer) (random money-upper-limit))8 L& t3 ]* T& K" _/ m" \

1 N6 a, S  x& w& ?- y" c& n8 [问题的提示如下:
( A9 l3 M3 V. ^) x$ k9 ~0 X* E( J; C
" G. v3 F# |! u; lerror while turtle 50 running OF in procedure DO-BUSINESS1 u- S/ W) p( G* w) a  P0 w
  called by procedure GO
1 i6 T* W( p; ], l8 wOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 S& b. w" z, v. C9 o
(halted running of go)" N) @( a0 ]2 x6 O9 g$ x

6 V. h" j9 u' G0 l' H" F这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~0 Z- z% }- ^6 ]  ^% E, f
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教& p9 \- T1 y' m4 z' z3 c( z( }' z
globals[0 @/ M5 l1 p5 X: l0 U0 O% h+ e
xmax: R3 V7 B+ y; Q0 Z* E8 C. o
ymax4 l4 `* f0 r- ]: j( ~8 O
global-reputation-list2 I: a; H$ I1 X3 ^" E, x1 w1 P6 F- H1 U
- L, v. z, @2 W8 G& ~7 K
;;
每一个turtle的全局声誉都存在此LIST
, M+ J& W9 N0 F8 \credibility-list
6 ?" y. ^! I; S6 M, D  A6 o;;
每一个turtle的评价可信度
9 M4 m' ?6 E! j$ \honest-service/ k" A1 k( Z  o# w: _
unhonest-service
/ J7 d3 ~( y1 |1 {oscillation8 E+ I3 H) B6 b2 Q1 Y( w
rand-dynamic
$ j+ [- w2 b' W  R) m]" m6 `' F. f1 x* g

+ m' }& e' ]" x- k* j' p' g$ ]# p, fturtles-own[8 t% a8 h  A/ O
trade-record-all
  u* o" M" j4 t% G' j* k  \;;a list of lists,
trade-record-one组成) ?: _- }! ]8 h2 d; h
trade-record-one: `. V, ]: Z5 ~( m5 U
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( V2 ]0 X( V  M% v0 U$ ~
9 k  e! @9 {/ Y% C" i4 F
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
- ^) w. ^. b; h  l1 ~5 U% Vtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
% e) d% f8 \+ K: Bcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
3 h' }3 c# H- J% m7 E( \neighbor-total
3 M6 `3 i* d! o% A. N8 w;;
记录该turtle的邻居节点的数目
) }7 N* {( I5 u, e% `# a5 Vtrade-time
& P6 l8 L( ~. u/ @& M) K& J;;
当前发生交易的turtle的交易时间# ?# {8 h* r: y$ b: x5 s0 s
appraise-give. C- m1 m5 E0 g& u5 u8 @
;;
当前发生交易时给出的评价
$ q  a  e" b: N& R( B) R1 gappraise-receive  f) v( W9 L" ^
;;
当前发生交易时收到的评价0 @2 w# R0 d; |  P8 r
appraise-time6 ^1 U1 D3 y. V/ K5 g
;;
当前发生交易时的评价时间6 p, M, v" H$ P. I3 ?$ ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& `$ H* a: e. B* f  }7 htrade-times-total" e  U- v; X' z
;;
与当前turtle的交易总次数, i& k: @$ \% H/ h- H; p2 J
trade-money-total! |" T# G% j: t7 x( \+ ]
;;
与当前turtle的交易总金额  E) l* H1 y2 u$ L
local-reputation
+ P* k/ ~. H+ w! r8 S5 K* S, sglobal-reputation* h) R6 \7 X! x" v1 Z! R7 F% ?
credibility( F% Z% f, @- n0 c+ f, Q6 s
;;
评价可信度,每次交易后都需要更新
/ e9 h" J4 ^! s7 |credibility-all1 E! o0 y1 G5 u& a) k
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据% X0 \" |7 S1 V4 j

0 T0 h# w! o' u4 h;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
. Q# w8 y- z  T- s# ]; dcredibility-one
5 L" e, E7 S  N1 T$ o2 F;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
$ V9 h, U3 Z) h3 F; y* {6 L5 sglobal-proportion
* p! T7 I2 G6 s, V% O& u: ^customer! G- v$ A/ I& l9 T: d1 s6 ~) f
customer-no
. C: ^5 x1 l0 Y  Itrust-ok; j1 Z  @1 k# G. ?( k! e* b
trade-record-one-len;;trade-record-one的长度
- D7 r, u$ r6 R]
% s! R$ o) A8 q
0 f3 L0 M3 e* [5 @6 @5 K; Z;;setup procedure& f. l. o. d( n" A) F6 P6 ]

! |" b# J' X( w/ |; M! X8 [) hto setup% [2 `$ P. q/ H2 s
! x& u* L  f$ N
ca
$ ?! h- U  T" G* d4 {) O

5 Q# X3 O% _! [initialize-settings

! X. P9 U7 d  f5 x- J4 V
2 |: |$ @  F0 [' N/ l' qcrt people [setup-turtles]

$ q# _/ u, }0 N1 f
/ T. C, V" ~  l3 r' Dreset-timer
- F% x: {8 w" ~* {
& Z* k9 ?1 e- `+ R3 s8 a8 y
poll-class
/ B' }4 K) m1 e3 h- m+ h
1 l7 H1 w9 Y/ Z2 U9 W1 x
setup-plots

5 {1 p: T' g; Z0 `
' j( X: ]) I: f7 rdo-plots
6 ~4 l' C5 k6 F- g! i+ A
end
7 Z# ]2 @6 R7 k" t
' L8 O( h' N9 ?$ cto initialize-settings
% h0 }* C& ]  R' A7 P& H0 |6 \
! ]2 j* ^6 Q  Q! {: T4 g' T: D9 dset global-reputation-list []
5 D' h, x( Q6 o

) ^, [8 \) ^: t6 d$ ^5 g7 A- J9 hset credibility-list n-values people [0.5]

; D8 }- |7 u" E! U2 X9 @% `$ e& S* [
set honest-service 0

8 W, Q/ I; }2 B* e: N+ y- W
) B6 k$ T/ j  A& i" w9 r2 jset unhonest-service 0

( }/ @8 z" Q- Z1 `' m# H5 \9 j
( s. Y6 e% B% I, z8 \- r6 O1 Oset oscillation 0

" E4 X7 _* c3 a9 m2 F3 a# }3 y6 C& l- s
set rand-dynamic 0

8 L: T+ |5 s/ x$ g5 B3 _1 M2 lend8 u; c: d, ~/ S! F: n

' b9 }0 M, c% c, ], K4 ito setup-turtles 8 i8 A3 A% x" S" m, X
set shape "person"
7 B4 a" z; q* f: z, `  Rsetxy random-xcor random-ycor
! x1 f) y* f/ ^. I' z+ z# ~set trade-record-one []
% j% T3 \& r) K1 @9 ?

7 v4 x- N! p6 o) C3 ^- r, rset trade-record-all n-values people [(list (? + 1) 0 0)] % o8 g4 O: e6 E9 q& g4 N/ E

) ]# F( ^8 }- i4 _& t: [- gset trade-record-current []/ t) V9 X1 H  Z, I& J
set credibility-receive []+ H$ ~- |$ ?( m: \8 g) C% m
set local-reputation 0.5
3 g! t: g  E+ S* w* E( Qset neighbor-total 0
# o* k/ o, @* W8 Z1 c3 ^6 P, Zset trade-times-total 0+ M( s; a, S/ y4 A* ~/ @6 t1 P( G/ n
set trade-money-total 0- T) K; X- R8 Q
set customer nobody
8 n. [. k* o9 v5 {# Y' _1 vset credibility-all n-values people [creat-credibility]7 F7 k5 E/ L/ r, D1 W
set credibility n-values people [-1]# n' Q5 T6 l+ |1 G! Z) @, T
get-color3 @/ T/ A0 q* @
( n3 U: \! n& m1 V, ?
end  R+ H/ N' ~  U) q5 S* P

7 B5 y* e: i3 h5 h, Mto-report creat-credibility9 S! J$ [) v; |
report n-values people [0.5]7 U: x4 ^, b# D" C
end
6 s+ y5 `1 x+ O! `* |! }, _, @$ I" _! W' o( K8 {
to setup-plots
! r$ P% n# X  ]* ?) ?% l
& h/ n2 q* o; l) W0 v+ Aset xmax 30
* Z1 U. V7 N9 ^  y5 W9 [7 j: e
/ @3 a5 f$ u* j3 Y/ i& k. r
set ymax 1.0

" G% D) K2 B/ J+ d0 v1 u! ?: W4 P% ?8 R
clear-all-plots

$ R5 ~4 K) V- F9 F, V
: U$ C% @0 \0 b! a7 }/ gsetup-plot1

) q% D0 J6 v6 h% G1 `+ r* j* H. S8 I: A. M' z, Z
setup-plot2
6 l  \  y: E4 \. l! @( a
0 n% X3 S! ?8 @
setup-plot3

, U' }5 M5 n% Q( Q- f  `# L0 o: Uend
2 t! \3 f' g" U! h) f8 e1 M+ p  `
;;run time procedures" Z! q- ]" P+ n) d$ c: q/ h
8 k# p5 Y: Q; F# X6 ~) {; g$ H
to go: s& l" S6 m) [' c; u# x+ b
7 ]- m& k4 B1 l2 ], N: b
ask turtles [do-business]

# f* R) o& O9 `+ qend: z9 p* ]( e* a! a# G

/ t# f6 \# V- ?! lto do-business 0 W1 Z* {" {. m, a! ]
% q( W0 u2 H5 R; r! s
7 ]  Q9 `. q9 n% p$ m
rt random 360
: y2 L6 ~$ f# l1 h) F& j2 t+ r( E

$ H9 |5 ]. U$ e* @$ B- B" Xfd 1
1 m6 V; E! u# }4 L2 ]: ?7 ?
, N+ a( Y1 F& L2 e0 j1 D2 h4 g
ifelse(other turtles-here != nobody)[

& I2 {# t% T% C# E  D3 H9 B1 a5 F$ T8 R( M1 [  ]
set customer one-of other turtles-here
4 d( p" f1 ^3 Z7 B
; @' B- R2 {: ^8 B
;; set [customer] of customer myself

$ O: D8 B# y$ U6 ]2 Y% k# Z+ m- L2 ]" z6 }7 U' {0 ~
set [trade-record-one] of self item (([who] of customer) - 1)! Q# U% g8 m# D
[trade-record-all]of self
, k( s8 D2 l9 ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 c3 y" O+ d/ @
& j( ~! h9 x8 d" ?% [set [trade-record-one] of customer item (([who] of self) - 1)% ~' Q* `2 {; A$ o6 m
[trade-record-all]of customer

  u1 P( G+ Z9 O% d; C7 b2 I+ p: W* m2 {: k# d. ]4 R& T5 q
set [trade-record-one-len] of self length [trade-record-one] of self
/ v" @! N4 `( X$ _/ Z- Y

% s) \  }; f/ X& t  q. Oset trade-record-current( list (timer) (random money-upper-limit))
8 L9 [9 r) e- C7 M' C

/ f6 C9 D2 Y# @' C; xask self [do-trust]
, r/ J4 k; A# d$ `9 S, U;;
先求ij的信任度. [) }9 W& l. U3 o: K
. u/ D7 H0 W$ |  k5 S4 R0 z
if ([trust-ok] of self)1 P4 \3 W" b  ^% g2 @' H
;;
根据ij的信任度来决定是否与j进行交易[
) A) w5 ]( t  e% b* e1 z- t# rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" G6 L. [) m& f" O. N8 r/ x( B0 M
8 d% l0 D; r# t, B! X( `  J6 t$ E[

" H5 @! a1 P/ Y) S$ @0 C' r; j' W  f) X
do-trade

# m9 I+ O7 F$ ^$ I& D: `. ~) ^6 c+ F8 `
update-credibility-ijl
$ \$ @: q2 E( A: U% l, \
/ \- r, D! P  U
update-credibility-list7 }0 `/ A$ U4 ~- g  D; l& w, j5 \2 [
& _, W7 {( u5 L! p/ ?# Y' q/ F

, }& T, H9 v, J, k8 i; h3 }# X5 j9 E1 aupdate-global-reputation-list
! n. u' `' V5 U: J
$ b: L# s" N4 t+ f1 A3 @
poll-class

; f4 K% [2 G) S5 P/ L# V1 I/ E. i7 S1 Q
get-color
: u' v) \) |; P6 Q( Z- l. w& t2 A

( B: Q. e$ A: D]]
# ?7 e7 q. V* J( f4 _2 _- B8 `/ |  L& O4 J4 [' ], i8 t
;;
如果所得的信任度满足条件,则进行交易
! r9 Z! [7 h3 j& q' w" |+ C
' x" @; h1 F( U/ V6 ]) C[

+ B6 ]7 x- X* Y, \% [  C& ~
$ I% c+ t8 Y! b) S8 ]% Z) Trt random 360

; G% y$ Q8 F# q, |4 W, O$ ^1 p& u% B! W/ M9 y7 H: z/ U, W) f4 B% l
fd 1

* ]) H1 f* D5 V3 X2 m" e. A9 H/ a; u- s, L; r( N
]
1 c$ m* m' k5 r3 [& D

4 a/ o1 @, H. I7 Lend

6 {9 B- l! y* m7 A! p7 c& _2 n: h( C7 `1 r5 T1 n. C2 E2 j' s* F
to do-trust 8 w* @, c7 P1 D
set trust-ok False
9 V5 N% l" U9 |& N
' u+ w" [9 c. f  I+ Z

- U' G  H4 r& X3 a- @) glet max-trade-times 0" c0 U" _7 J: Y4 G  O7 [6 J% ^
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! t3 Y# Y+ R+ s
let max-trade-money 0
% m* m( H1 b* k  }$ {4 mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 x+ f; n2 I* P; G7 R1 @; ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ U( h$ |0 j  J2 j, h1 K3 o' W. {- `4 a5 v- D  k

0 j2 h$ \* L. `9 y) Dget-global-proportion; n* @" I" I% X. u! J! s
let trust-value' @# D  Y, {8 Q9 n5 t% O
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# c  {, z  y& u1 n. c/ k9 J; Uif(trust-value > trade-trust-value)1 p% g# ]. t6 b& m) g5 |: y0 q
[set trust-ok true]" i9 U) S8 w! e3 o% O
end6 P9 M; t/ ^; Z  A% c" R

7 C8 i& k9 M# Z' pto get-global-proportion
1 g0 I/ ^* q7 K2 b0 ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; B3 m( _" r' r[set global-proportion 0]
# _5 ~8 I& Q/ }5 k' b" ~[let i 0" I3 ]% P* }+ Y' C& k
let sum-money 0: `7 G$ ~' `7 K9 _7 K
while[ i < people]
. ]( U/ r4 S& E! m[' q+ M& z7 P  c4 }
if( length (item i
5 U. E8 R" m+ S, ]- T" C7 k[trade-record-all] of customer) > 3 )

9 I7 O* z- Q% X& ^' }; t0 Q[
+ a1 f! [* e6 D- C% C) cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 }( L" [- i5 Y/ Q3 H]# l; p0 u$ `2 @
]
* x! w. b, u/ c! k0 G6 Z' o5 Slet j 0
# B$ q  K5 [2 J7 xlet note 04 F. d, Q: U* \+ a
while[ j < people]
5 h9 y1 O3 Z, |5 A6 l[
& u% W* C# W/ [: Bif( length (item i, l- s+ K& l1 M5 p1 ^& d
[trade-record-all] of customer) > 3 )

1 J2 w2 `, J$ D9 d- h[1 x& ~( ?: K( l
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 f3 b$ X! `6 t$ @5 q. \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 _4 W8 b" a2 @- @4 @' ~& W[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 L! R- u2 e% h7 |- y  a. r
]
7 |. r% b0 |9 t! @' Q, {. }]
9 C' \. Y0 `  ?/ l  G: yset global-proportion note5 a  U. ?4 ]2 S
]
, `# c9 _' K; m& Z6 Z( m; g' K* Fend
7 h0 @1 `& T, e( Z. i! N
0 e% b( Q% y- i; @* |* Yto do-trade
; p: M: _1 I' N3 w2 F' H6 S) t& m;;
这个过程实际上是给双方作出评价的过程4 p4 Y  i  c6 H* X/ m$ Z3 \, G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  e7 o$ m: f" V3 ~7 `, nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 @, u. K8 e8 n5 U8 W; L/ @set trade-record-current lput(timer) trade-record-current
* c" a1 o; g" r) [, G;;
评价时间, z, `- a$ r8 W5 ~$ r/ N3 D4 F
ask myself [8 e8 ^- d$ C' K: E- g* P0 F: D0 A+ B
update-local-reputation
5 P5 a" |/ g9 e7 f7 ?% P; eset trade-record-current lput([local-reputation] of myself) trade-record-current
. e% u  _9 g) H3 G]* C7 E6 `3 ^/ D& t
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  k  O3 ?2 |; _/ h5 p
;;
将此次交易的记录加入到trade-record-one3 Z( @* [7 z0 p+ x( q: {0 X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ \* ^4 |/ v; y; c
let note (item 2 trade-record-current )
0 Y: G2 m$ ]4 m/ x: h9 Rset trade-record-current) l0 f! J+ h1 p
(replace-item 2 trade-record-current (item 3 trade-record-current))

4 ]  t* Z* Q. P. X+ cset trade-record-current& e: L1 T  C: c5 ?
(replace-item 3 trade-record-current note)
5 Y) g( I6 K8 s* c2 s
, ~: s$ D; U- H1 X' \
" P# V( C$ F: l( O) O# V4 Z" P
ask customer [+ ^( ^2 c& P& b- M* e" ~+ p9 d
update-local-reputation- i0 ]8 q- L: v# W" D0 a
set trade-record-current
. X2 @* ?3 R4 G3 O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: D" N3 @3 d, p
]2 z5 F9 I0 i8 t" F' W3 b

; r$ Q# D6 {2 L  j  @, a' p" O
. B" ^* X3 r- n" Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 X8 D# o$ V+ y7 g! f$ V! M- h

) v# V5 y$ s" l; |. M* q* jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- o+ ]6 W& j! q- l: Y" x# k9 C;;
将此次交易的记录加入到customertrade-record-all  ~! s* u3 z! M" v- p' k
end
5 O( L) y- `* v( }; t& R( _- a3 m, V1 D7 m. f- t+ G# A
to update-local-reputation5 R" }0 Y9 i8 I5 q7 C2 _' p  x
set [trade-record-one-len] of myself length [trade-record-one] of myself2 x6 q: {+ D. }8 L& E" T2 d
% m/ D& r# h0 j( B6 f
% b8 O" |% u/ P- i* s5 m" m
;;if [trade-record-one-len] of myself > 3
8 f4 j% K% \0 p9 u
update-neighbor-total
+ o. T7 A6 s. k. ~) d;;
更新邻居节点的数目,在此进行
2 U  K2 g7 w! l' t2 M. J: T/ @let i 3
2 `9 n  c$ c& u* u, K5 Xlet sum-time 08 I5 ~" |7 n' Y( X! k# Q7 B
while[i < [trade-record-one-len] of myself]
4 y/ m# B' N3 J; r[2 q5 m( k" j5 u. j; L# l
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 d; P$ @6 N6 H6 }set i: Q( p+ B- e7 T' N
( i + 1)

2 L: g+ }, p, E+ [! J% P: X% J]
+ U  }0 ?5 g5 glet j 3
! P$ U9 b( h' m% g. L+ |4 mlet sum-money 0
* s2 l& H" l7 _7 ^* uwhile[j < [trade-record-one-len] of myself]
( l4 i+ N: b0 J6 z/ Z' z% X[5 Y  {; x6 |5 s# ?6 ]3 x
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)3 l! G* X. V) B" G% }0 H
set j
* _/ U( _( `/ y3 h7 N; y( j + 1)
& x0 g' u! M9 B& m0 n# u3 ~
]7 n1 z$ m$ S* m. d
let k 3
7 L  z0 z+ u; Z% `7 Y2 \" Elet power 0
1 q0 N! Q4 K* c8 Z2 \* H( Q( l( t6 alet local 0: n" j4 H6 H% S, R: H' t) `4 P, z, f
while [k <[trade-record-one-len] of myself]& w6 l4 n( J  I$ E1 s7 `! N
[* y8 H0 {" H4 m, w! C  d  z4 Z& x& j
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) , H" n# t# t! A" o. k5 ~
set k (k + 1)( }6 G9 E9 x4 h0 N
]4 a, K; x; ]2 k1 N. p( A- K7 b
set [local-reputation] of myself (local)
5 G) ~; L7 b8 T  s$ M5 |7 R6 Send$ ^+ t2 I# M. Y% w2 C& n/ H

. \' ^) M5 s* L% h. I* n! Vto update-neighbor-total* m+ A9 L4 ?. B/ I
6 F( t' ?6 @3 T, U- h6 y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 \0 N9 W! i- ~
8 y3 U7 I$ G6 K* d/ @6 C* L
7 i8 C* m9 Y. @- d9 y' _% s
end! Y( h  Z$ [6 A5 _
6 {$ m  \: r9 G. O8 i" I
to update-credibility-ijl ) a. {- `" V8 Z
5 Z: H1 a1 Y9 ?# B* O2 f  b1 u6 t
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
- o. r" e, F- Tlet l 0
+ {! G: C* p. {% \% B4 ?while[ l < people ]4 y: `7 `+ w. V3 k' r
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价( M# u9 {, |$ L) V/ }6 A- Q
[
' N! @1 `1 d4 Q9 w4 q6 Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, B$ B! |$ ]3 j+ }" {% N4 Xif (trade-record-one-j-l-len > 3)
+ K1 f9 [3 l# Y1 u3 G2 T/ X% I[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one% z" l4 I3 P5 e- g. M
let i 3
6 w5 ~9 B" F0 q2 q$ L0 flet sum-time 0
: U# R) v( W" E9 cwhile[i < trade-record-one-len]
/ _  ^" p" c7 f! k; }[
) ^0 a4 e# S) V- y- F8 `' ?/ ~) ?5 Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ t) f  g) |1 R* h0 c
set i
9 r! s7 z6 z& q! a( i + 1)
4 m# a2 N- ^( L5 k
]
1 y6 Q# T! q! b7 l  {let credibility-i-j-l 0
5 I9 C* Y) g6 {/ N/ z8 M;;i
评价(jjl的评价)
! o6 o% b5 G* o0 \& |" q* \& }/ klet j 3
1 O% R& L, N8 dlet k 4# i' j; E& B" @% t, T+ G! u
while[j < trade-record-one-len]
5 L+ e+ I6 g8 t# t[. V/ o1 u5 H0 Z* y1 u
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉0 K, @# @1 q; Z: a
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
" U5 }! F5 I' cset j
2 E+ u7 c" b4 n" c( |( j + 1)
0 }, j+ |, i- N
]
' P: G3 w! L* u) m+ C6 rset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
" U/ U4 V) j4 K# d3 H1 w5 O/ e* r2 k% i  A. }" H$ V4 d5 y

) b, _( R" W3 H- clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 B) G" h0 E/ I0 K
;;
及时更新il的评价质量的评价% }3 q9 [" b. ~4 Q0 X
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 D1 K8 G  n5 h- u* o
set l (l + 1)$ a/ E5 \3 P! _
]+ c: O6 e8 B, ~2 ?- v
end
2 p4 C5 @, I$ ?) K& S
# j2 U& T  [6 E4 \to update-credibility-list
4 v- O: @$ v6 l) s9 Rlet i 0
, m3 k: I, W9 e0 }/ g) rwhile[i < people]
' F8 Z; k9 a* X4 V9 S[6 z" V* U! R$ I; u4 E
let j 0
: `" _3 T1 p( ]' a0 j+ F8 n5 g& blet note 0
2 `3 D) ^( B" P, ^" K  ]( Ilet k 0# @" z8 L% r# u" y1 D
;;
计作出过评价的邻居节点的数目/ Q2 G% ]& ]# q, c- |: F$ Z
while[j < people]$ L2 h2 d- }7 O7 H
[8 o8 z5 n- r; Z$ ]1 `
if (item j( [credibility] of turtle (i + 1)) != -1)
7 c7 W& l+ C8 H: ?3 T1 m2 J6 b;;
判断是否给本turtle的评价质量做出过评价的节点; e3 h' b( ?3 D' M: o
[set note (note + item j ([credibility]of turtle (i + 1)))
. b; v/ I7 Y. a$ O, I) Z2 i;;*(exp (-(people - 2)))/(people - 2))]
8 m# K( E, b) w+ Z# K/ W: a
set k (k + 1), ~6 J0 D& [9 M0 _5 _
]( L( h% M" M. N$ s' t
set j (j + 1)8 _3 F( a6 h6 h8 d4 j6 m, n  r0 f* s
]
# `/ X) q! U# q) Xset note (note *(exp (- (1 / k)))/ k)
3 r) F2 F# X) j$ Z, Dset credibility-list (replace-item i credibility-list note)1 r- b6 w# e5 g) A) G0 Q' C4 {
set i (i + 1)2 S, ^, K* I! R* H( U! m1 ?# B1 g+ M
]+ A4 F: \7 |' o
end
+ _& i9 z# c0 ?) ^  a  D, j! w/ r& p& i% |8 `" a/ I5 n
to update-global-reputation-list
+ f) c  o0 ~6 C% Y/ ]- w# ilet j 0- s8 _2 B7 }/ K! x# z% {* I! F. E9 C
while[j < people]6 |% ?. ?. r. R  O
[5 n% N, J( \& d+ G5 V" G9 @
let new 0
0 ~; D& q3 T6 d: E; ?- ]4 I;;
暂存新的一个全局声誉
( S, T3 W( ^7 A) t8 `# slet i 0
3 ~$ Y5 N" ]" d! g8 [* c8 I) `/ j' D& Zlet sum-money 03 ~) Z6 K% k, B; d* C" m
let credibility-money 08 A0 Q# a* [; M& [2 e) D1 G
while [i < people]
7 w( g$ E# J7 A/ p" ^8 G[
: \: u0 \) c7 {- uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) S" z# `1 D7 d& ?0 d0 U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( H6 @8 `( e1 ]5 O% t1 K* J
set i (i + 1)  n5 z2 ]- _7 }" L5 T$ w  m  f5 Q
]
+ m: w1 V) h  _3 y& i+ elet k 0! p8 ^) A$ ^( J# |
let new1 0) D0 f1 C+ y, T7 ^1 }
while [k < people]& j( m! b3 I# U8 f  l0 W# ?7 c
[  W1 I& d; h$ N( c7 b& w
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)% Q, Y6 q- U/ |0 Z, l+ N
set k (k + 1)
9 J. i- V. j% v# |  t]" ?5 f% v! A' k( M7 @5 P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: c2 ?9 @  J, X7 k! qset global-reputation-list (replace-item j global-reputation-list new)& ?3 O9 T6 v7 [7 B: D
set j (j + 1)
8 ^" ~$ f1 G& F0 ?]
- F5 V& @- b5 ~0 kend  e0 q$ K  v" a  B+ ~

+ k0 P8 \( P0 Y; |
7 m! t8 G8 r% ?' e3 X1 G
; J8 s! r0 P  o1 Cto get-color
0 d( B/ j) m7 ^% I' i7 O8 T0 f9 x/ O5 ~2 S% V# N  _& w- L
set color blue

4 I& Z# C0 a/ J  e: B& pend2 b  a0 t9 U6 N5 Z" T2 C9 K

" _3 G- K9 C; i- Y; R  Gto poll-class! n; r9 H8 l" C, x
end
+ M) |+ u0 Q. X1 @8 m- e0 y$ ]0 W6 r
5 A6 _1 }) s+ D' i9 x' Mto setup-plot1
" C$ j( K( U. C8 w
) R: a% b* \3 G; u, dset-current-plot "Trends-of-Local-reputation"
9 e" Z: M6 k* L, G0 f

0 z# k/ R; ^( c/ Dset-plot-x-range 0 xmax
1 l/ i/ O) G1 J* {
% ^; `7 D/ n* [, \& Y5 i$ i; D
set-plot-y-range 0.0 ymax

$ m, l- O! e1 z5 `* I/ kend
: F3 D+ h$ \2 Z* N! p9 v( e1 z* O! V: p0 q) f! |3 Q' {/ x
to setup-plot2
2 d4 m) \5 d4 E4 s* ]# J
$ m$ y, h% t  g6 cset-current-plot "Trends-of-global-reputation"

0 T* X& J( v  q* J- J+ l% m# F+ }( @% `- b: v
set-plot-x-range 0 xmax
# S- s9 Q# M; m9 o
3 h* j5 Q1 ^9 [, |- Z
set-plot-y-range 0.0 ymax
" e# n+ m3 c; w; I7 B, }* Y4 A
end
* q# O7 q  u; ]* b  `2 t; z6 y6 Y4 N; a% Y; M8 ~
to setup-plot3! M3 s4 ~. q+ t" _4 O8 B

) g2 ~9 r$ S$ t! g" u) s) W' kset-current-plot "Trends-of-credibility"
- U+ J  g1 E6 Q( o

- N# H" t/ h$ j' H8 ?7 \set-plot-x-range 0 xmax

- h% [4 _. `, Z$ b* U& J* m. @7 H& P; x1 m  h. |+ D
set-plot-y-range 0.0 ymax
$ {1 ^5 e- ]) D7 W0 X) c
end( C' s5 u- z: f3 ?, U

  c3 a: L3 c: E( h# Y: T# Rto do-plots" A7 h' C- h4 ]* [! s
set-current-plot "Trends-of-Local-reputation") R8 J* w" o0 Z! K( R9 k% J
set-current-plot-pen "Honest service"& _) \! X/ {9 S8 y" u
end3 M) Y% |! G6 [2 L3 r- M! c3 @

& q3 Z% ~9 |/ I. `; M* \, A0 R[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.7 M4 s2 f4 d% Q/ X

& C) t3 |( s$ k; }% t4 w$ \! i这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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