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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:
, ]2 e+ X) e  M9 V+ {( {to do-business
/ J0 L- V( J6 L5 ^' ^# A rt random 360
% M* Q! i% ?( B; c+ {. w% A) B fd 1: v) L" i3 x$ n+ [7 d1 n$ p" J
ifelse(other turtles-here != nobody)[: V) `4 m  j) t7 n3 S( I# T
   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.
! R; S7 U# l5 ]1 h* p7 r! b+ P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* |2 f: g0 U7 t. }$ t" d: b3 P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: I: H5 N- k7 {+ X8 C+ B0 `   set [trade-record-one-len] of self length [trade-record-one] of self
8 d! d. s) q: T2 u- \6 q3 l   set trade-record-current( list (timer) (random money-upper-limit))
1 M( p- \1 a& w' a- C8 B( Y
4 s2 c, k; a  w问题的提示如下:/ `9 V# s" W' m- P& u- C: M8 @

( B7 R, y7 G  V/ w/ Jerror while turtle 50 running OF in procedure DO-BUSINESS
+ B* k$ t2 `, H3 M- B& `  called by procedure GO+ ]9 A! d; a2 d8 C
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. S4 J  U5 q4 d9 e0 F8 W6 _1 f
(halted running of go)  c4 P* z# c. c4 e2 ^3 D* ]" L0 S

2 |! O9 d8 e6 V8 B! ?! G' ~( P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~~2 p2 U! {' F  c7 O+ V
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
# r1 H& u* G# j1 p. Jglobals[- m+ t5 T  X4 n; }! Q7 ?9 J2 s5 [
xmax* i; L, O; J7 V% {' N% }
ymax. a) `+ D9 l: B' g9 k6 g$ t# s
global-reputation-list
- u7 L/ n9 [, g4 J+ |. x+ }/ m, c- ^% E/ E
;;
每一个turtle的全局声誉都存在此LIST
) Y+ y0 @+ k" _( b  Scredibility-list4 u) H' u6 `8 H" W, J7 S1 o; w
;;
每一个turtle的评价可信度  b! [2 f/ G* ^7 H2 E8 R! D
honest-service  ^1 Y3 [1 Q; {$ e/ o
unhonest-service
/ o- X! g. V* }% N4 P8 ^  o6 noscillation/ G" N, R& f7 h- n
rand-dynamic
- s/ d/ _& D$ L' B, u! x) O/ M]
- K. B7 H3 w/ G# T/ m0 Y- t1 E* R; x6 M$ A
turtles-own[
6 s+ ?% o8 [! x6 ~3 y, rtrade-record-all
/ A" q: K4 Y* n. V4 Z;;a list of lists,
trade-record-one组成
5 z4 c8 B- c# I, t* N; Atrade-record-one
# w3 |9 @6 P3 ?9 u7 A;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( G, ^' {: m, ]4 n8 }+ D+ Y

! C" L9 ?# m! \; [( x;;[
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]]
6 M. @5 Q. O) g$ ktrade-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]
$ d/ D) v7 U" dcredibility-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: x$ y) S+ r; _: F. N
neighbor-total
3 v- ~( v5 h( S;;
记录该turtle的邻居节点的数目
+ e; c$ t4 m! N: x, \' ltrade-time0 x* f; i5 n) {+ t
;;
当前发生交易的turtle的交易时间; t8 Q2 o, \- g! k1 J0 \% r$ Y
appraise-give
/ Z' O! F; o4 T% ?* c  m$ \2 d;;
当前发生交易时给出的评价: G  j. w% D8 r+ r: ^' w
appraise-receive1 C4 d  @: {6 y& x; e
;;
当前发生交易时收到的评价! Z" b# I& a5 ^: Q
appraise-time* l' g( l! r* A$ t( |/ h, V3 e4 q4 g
;;
当前发生交易时的评价时间# ^7 M/ ~* c* K$ d+ D, |( e. l
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 P4 q4 h- H$ C5 Y+ I: B0 z9 k
trade-times-total
+ T' X  B' [. x' H+ ?- _;;
与当前turtle的交易总次数
2 ]6 Q: c$ O2 d. f9 wtrade-money-total& }) m9 S; D/ u% O5 z
;;
与当前turtle的交易总金额
$ y: q0 X" b% i) `: z& r& D# Vlocal-reputation! Y1 j) |0 j. [$ {
global-reputation) `( r' K& S- T7 f) r
credibility
% N5 d, S( T# y* b. h6 R8 m0 B;;
评价可信度,每次交易后都需要更新% o' W* ^$ _+ c( y9 b
credibility-all
" V) m8 x9 ?# v;;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: Y' M* j! p( m" g
  P9 n. y9 g7 w( o6 I( x0 e
;;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( A# g  l% w7 \  w: n- a) i. L2 A9 Y
credibility-one
* R! ~6 q: U4 q# ?;;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people0 s' s* B; p% S, W4 X3 E1 b$ n$ @
global-proportion+ f! }3 u7 T+ l  ?
customer& L0 v( Q' q9 P! C
customer-no
: y. X. d" [, E5 A9 H" n# _trust-ok
" k3 D# P9 ^9 @3 \# ltrade-record-one-len;;trade-record-one的长度2 e1 \6 L& P- Z3 Y# A
]3 X% ~' t2 d2 ~. x; o( t
; G9 r! @5 S. w& ]6 Q: c7 i
;;setup procedure) W- T. E: k( B$ c- e" U

% r0 s" U6 J" sto setup# _# e' S9 U* M2 v* g  r( X4 j
$ Y' K4 U# k- E; w( S; U
ca

  `% d+ w2 R7 c. P- W* \5 j
6 i- c8 A; T6 U/ Cinitialize-settings
3 c& h" v1 b2 U0 O+ a/ M, N% x

) A$ U. L! o" {3 dcrt people [setup-turtles]
: J2 K1 `. b' q1 Z# I6 k

1 B' q3 ~+ X& M! Rreset-timer
( W8 d/ [! f$ ~  e

3 l5 G+ S3 ^0 c2 O. N8 Jpoll-class

$ ^1 p1 s3 H" C9 ^8 N! j* S
7 m' `2 ^; ^, v! X. n2 l0 psetup-plots
3 D/ R, ]. b! ?7 i" o( k

2 v  b9 g) U  @& |3 Fdo-plots

" D7 |' `: ^* I2 J, aend
2 t1 N! X$ ]- I& G1 q7 t% V3 s. [, M% \* T" `( v+ \% N3 G
to initialize-settings
6 y1 E* Y) p4 W6 A: U  R/ Z3 r1 ]% B# l4 t
set global-reputation-list []
" \, w, l+ b6 d/ {6 k- c

% _; P, ^/ H. {# c. e# S( nset credibility-list n-values people [0.5]
! |! \/ Q! e' t8 {+ b1 @
* G3 _( u, `0 q3 O: T* P( @  `) E" Y
set honest-service 0

* v' J/ ?" b+ I4 q* X
* v5 l" U; }6 ]- y: ]) @set unhonest-service 0

0 C  O( G6 N3 O2 }8 u
/ q; V/ R* ?9 ]+ nset oscillation 0
: ~8 W. u3 |. I" X+ m: V
$ M0 Z1 @9 a% z6 Y6 `7 n( d
set rand-dynamic 0
1 X5 X2 _) z- N# L6 u
end
5 W. J# p' N, Y0 p" }  y( t' M# L7 ?
to setup-turtles 7 `) a- g4 w- m4 B7 Y# q
set shape "person"
. M* A. o% D" S* a: A3 Osetxy random-xcor random-ycor2 q+ W/ \/ E8 \
set trade-record-one []+ A3 A& z0 s  m
* P7 c( _7 X, z0 p4 a
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 X& u& o  s4 x$ [3 M  K

; d9 N/ R. |! h6 g' C* X  tset trade-record-current []
5 n2 e8 Y4 f* F) t* L0 fset credibility-receive []
, k% j" E3 N6 f+ F. n+ Vset local-reputation 0.5" n5 n0 ^  j7 _
set neighbor-total 0  [4 {/ B# w; i, Q* }' W
set trade-times-total 0
. E' I$ ~# L- z- |set trade-money-total 0% b* A: o6 @2 y! D1 W; \- }3 @) w
set customer nobody* o5 A* v7 w" Q) w% B. X4 t# Z! W
set credibility-all n-values people [creat-credibility]: t. {. E; Z7 @( |+ P* j* x3 M
set credibility n-values people [-1]
7 j$ i; G$ ^6 y4 t+ U7 xget-color
( v) i, }0 m1 }, b0 J2 i) {( p
/ q, L: X+ d  k% S# A( ~
end
& I8 Z2 b% ^1 ^8 M1 B' W
* t. [: |$ M. \+ m$ ?( |5 w2 bto-report creat-credibility
) V% N$ }8 N* v0 H! J2 ureport n-values people [0.5]1 ~0 i8 @! a$ Z0 z; R% I! L- i; [
end$ S! T5 b; d  u7 G
, U- }5 S( {9 R8 h4 y; I
to setup-plots4 m$ A5 @1 G/ r" ~

8 M; }  e& @9 x- Fset xmax 30

! E7 f. A7 g6 r  ~. c8 _, y& a: h2 p& s
set ymax 1.0

! N: p! V7 m8 X9 @) {0 I( ^, N( y( K7 j6 R% {; E
clear-all-plots
& x' _+ j* q4 L, d% X1 f2 `7 v& E

# ]# I4 }6 y( b' q: rsetup-plot1
' K  Z% p8 Y5 J8 ?/ L
5 G- S6 U5 ^' h) Z4 \
setup-plot2
5 E4 E, G& H+ v! B

( V8 e8 y% r1 F1 }* P  @0 ysetup-plot3

$ Q; |& E( c# K1 {' F0 Y. [end
: o1 M+ L" ^# {9 M6 k& |, u" L5 a8 x
+ r( T0 q( H/ R9 G* U5 j$ _; a) l: Q;;run time procedures- v2 R9 O& a+ I5 ^3 [
3 O4 y; I' |; X" {( g
to go8 h4 E% M. W/ }0 f" h
+ Z" Y! x' a6 {2 Z. K2 t+ x$ l
ask turtles [do-business]

( u$ l1 ?) b; Q/ gend
  K2 W5 K; ^9 r! y! v/ i1 p! Z+ J$ j: t* c% b/ Q
to do-business
& a% C/ P. L: j0 _+ m

" w  x8 H, F1 J2 h2 t( R; ^
2 Y) O9 a7 v0 a4 r5 U' Ort random 360

% V; B" ^  i" I; K! O; l
7 A3 Q& ?/ [! y3 Z5 wfd 1

: [2 ]" s- @$ G& b& ~/ G1 U* H
4 W1 x2 Q+ x4 H" l* W# {, I1 Lifelse(other turtles-here != nobody)[
& H2 x) [4 K2 f# z4 s6 o# v
+ }5 K/ p% |; e, E" c  j
set customer one-of other turtles-here
: g* x$ c7 g# J* u' U

& ?! R0 z  P5 e* M" X( ]2 w1 z2 H;; set [customer] of customer myself
# S) ]8 K& E! T; ]& D0 [% _9 m

2 {& H, I# y1 }( b" n' U9 M( j$ cset [trade-record-one] of self item (([who] of customer) - 1)4 K' b7 O$ k  t, ^* S; \( h8 a
[trade-record-all]of self
: `  L- r2 A/ v/ C- I* |* d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 _+ Z/ Z5 S  f& `$ U1 B% X
: A7 R5 \$ }, i  wset [trade-record-one] of customer item (([who] of self) - 1)
; o2 r% g7 V& j+ w+ i[trade-record-all]of customer
: X* g1 P: r2 ~, d. h- Z1 m3 \  R
- v7 P; H& g3 P7 v( Q# i$ w2 t. Z
set [trade-record-one-len] of self length [trade-record-one] of self

* T$ y6 P, Y+ |
: l8 ~' U* I# r; ]( \) `5 qset trade-record-current( list (timer) (random money-upper-limit))
' W) r: G$ F% X2 A" R* `3 u, |* P
, k4 a# [% a2 X3 C" r7 X: \
ask self [do-trust]% V0 {) t0 C, W
;;
先求ij的信任度
% C* M( x4 @2 K: ?8 S' l$ i, ~- \5 ~0 i' b7 J
if ([trust-ok] of self)* s2 Q3 X; w  Y5 s5 p. U6 @- D" s
;;
根据ij的信任度来决定是否与j进行交易[: M& x* o6 x) L0 L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, T: l0 U% I6 m* p) v

6 A# V$ h; S$ z[
! S1 Q2 D9 ]9 b$ F. _' F9 w; R
: G7 \/ i5 R4 M3 W6 I; y+ m" `+ v
do-trade
8 l3 P" ?" Q- G4 D2 J. K
( P+ f2 ^! {3 a  j7 {. G* Y
update-credibility-ijl

! `; _/ R) a' X8 m; }% N" k
- i3 B+ E) t$ M' f* T: ]: X$ Cupdate-credibility-list& g& A4 c6 [4 R# ^
6 `; j9 `' d' ~3 a6 O7 P' O- U9 j

  {8 i, M: v! o3 J5 gupdate-global-reputation-list
/ E4 D& c$ J" y9 l! u0 }) z6 P

+ \/ ^% h2 K9 G. Y7 qpoll-class
4 h8 S$ P: ~- {  H8 V+ D- y
& a$ Q% l- J: f2 Z! I& C( i
get-color

8 R/ t, U# |8 k9 z2 i+ Q* C, V5 T5 e& P" A* N" Q4 d
]]
5 I  u) U$ h% u! o- u1 l
: m4 D, N  ^: h0 t  [  l- n! e;;
如果所得的信任度满足条件,则进行交易# U# m/ b5 z. J, k* @. i
8 D: {. V4 w0 L) j$ i, g
[

" I0 P( M; c4 e% I  I5 w& I/ S, L2 J! S: l/ e
rt random 360
% f9 [* y5 ^% j- H2 G: W; f
" P; K7 K. d9 P  }- e& f7 @1 W+ U1 [
fd 1

- s- w! h9 i) V' q( Y. v% `
& p9 e' o/ k: D7 U( _]

; q0 ^' K; O$ d, l7 O" |' a( V1 J1 k  t, q8 P; I7 h
end
- E9 g+ l& Z) A: J, j) g/ L: N0 L( C
; C0 U4 ~" f1 u9 E8 t2 I
to do-trust 7 P! G1 f+ [# M6 Y7 J
set trust-ok False% L. i) T& _3 E5 B* N: F

3 d5 H$ y3 s& c+ e3 N4 `% a/ l* k

/ O' l3 |. m. @' jlet max-trade-times 0
/ k9 v* s6 j9 b$ t. P5 Wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( ?9 D3 ?# O2 d; c  G# {# t, n0 ~
let max-trade-money 0$ z" O. _4 A6 H2 @' {3 L: ~' R+ F
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; Y+ _4 I8 {1 L; wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  e' {$ L; E2 Q  H7 T/ \$ f2 T+ f# P1 @' V
  b. `: w, D  |6 V, X8 j, N1 {
get-global-proportion+ }) U# u9 O& O9 @% v
let trust-value7 }7 P9 X. z. c7 a* z# E
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)

1 `7 W! N( ~: J/ z+ `! Mif(trust-value > trade-trust-value)
# `5 _! K4 _% Q[set trust-ok true]
4 Z) d+ |' _, Z2 H4 g; _end5 I: L, `7 B$ L, U' b  X

# i) J* C4 e. O3 N0 M" W. U' Qto get-global-proportion$ L, J# _+ C) P4 l4 t: s! C) t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); a3 |# z' X' v4 E* R
[set global-proportion 0]9 t  s5 H; u0 N+ O  B6 w/ b: V
[let i 0
  l6 T1 W( m  J, P1 Q$ slet sum-money 0
& \; B1 N; D. a% m* {while[ i < people]* }. U5 y6 k! T" }
[
5 G  L( E) U; |3 r' pif( length (item i
7 c- p/ [0 z4 k- T9 {4 @6 k[trade-record-all] of customer) > 3 )

3 H+ Y8 ~. D- E' M[  s! T+ D8 h  K- r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 `5 c7 e) ~) z; h& O8 R
]% d/ c- q' X5 W" P
]
! u$ w7 j# m+ V& {0 Slet j 0+ a. k" l; h7 p# j9 g; s
let note 08 A% a. d7 |: D' P/ h9 O+ k( h
while[ j < people]
: e; U0 z! J# ?+ X[
3 A0 Z3 C8 x9 R5 e2 B) S* _2 wif( length (item i; O/ O! J4 A$ M8 o0 H
[trade-record-all] of customer) > 3 )

8 t- |4 p$ d7 F2 p# ^[8 y2 i9 @# V! Q7 ^( [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& b; }" |" _4 P! J" c4 g) u[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% b" G+ ]6 d' o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ m" x; h/ v# O0 x]
  Z$ ]) B3 G$ \# ?% _# i7 s% J; z]
- W6 Z1 G, |' D" V- m* tset global-proportion note
) T  o# K4 G1 ^" ?]( ]; e  J3 [6 e% H1 ~# l# a% _
end
/ s! J2 L7 V! E# |+ y/ ~8 D
! p5 R. {$ Z4 M4 uto do-trade
0 ^! K: n- z/ ~. D;;
这个过程实际上是给双方作出评价的过程
- F: D# h( M1 S! `: p* o" kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ X' G7 ^" k* n8 s5 h5 d6 Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! ]. v5 `# R0 P8 S  `- w- wset trade-record-current lput(timer) trade-record-current3 _, r. F9 g6 S! y" x
;;
评价时间3 f: d: d) }% ~. R6 Y
ask myself [6 [7 ]0 T8 I, y, c
update-local-reputation  G0 C0 H" x( C8 |: m
set trade-record-current lput([local-reputation] of myself) trade-record-current2 K% s9 R$ [+ Y* |* g
]/ S" a- w( ]/ ]  h3 e0 C" C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 ]/ {3 d4 {1 r& f7 e: h# O) \. };;
将此次交易的记录加入到trade-record-one$ t. a+ _7 X, B/ N5 G
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' d6 h7 Z5 h# B
let note (item 2 trade-record-current )# Q+ T2 j8 W( I" I! Z% w
set trade-record-current, l$ k# I8 J6 C9 W
(replace-item 2 trade-record-current (item 3 trade-record-current))

* f) T& E% w/ i5 dset trade-record-current
; f) y: M4 L  Y4 F4 [% v(replace-item 3 trade-record-current note)
% c7 M3 L" P) N  f, d. }
6 ^/ E. {& m/ h6 p
, l, d: e% d; M
ask customer [
: X5 G/ Q8 E+ I2 vupdate-local-reputation+ G( B7 Q* k8 Y) r
set trade-record-current
. g) a) {0 O& k* m) V8 j. l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 v$ _& Z7 m' D$ i9 @]
! s5 e2 }/ A2 p  S) R
. j9 g/ K/ h" m. n6 V0 Q/ |

3 O6 T" C5 R. }  e8 @7 }  z' f0 I' nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# A0 @! I) d. e

  y- j- m) O# Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 X* F7 v9 D. Z% [7 b
;;
将此次交易的记录加入到customertrade-record-all
9 q2 i8 h" \& Oend8 q. t9 a% T4 k( Z9 A; o5 K
" ?* U3 y9 C- A/ ?
to update-local-reputation
! C( h/ a3 \" p( O" kset [trade-record-one-len] of myself length [trade-record-one] of myself
2 C! \) G5 e3 g5 X5 o6 G8 r, g
' G4 a/ ^# k, G/ _3 s
6 Z8 @$ T5 \4 j: o) _: T;;if [trade-record-one-len] of myself > 3

8 e8 Z! @8 z, x) z/ z% |update-neighbor-total
  W: {' O( J- q, d* @;;
更新邻居节点的数目,在此进行
- ~5 z! z5 M- t; Ylet i 39 i8 Q* ?, o6 j3 ?1 W. n) j
let sum-time 0
' o; l& q+ D$ ?! c- o. \1 i% m. Hwhile[i < [trade-record-one-len] of myself]
8 l4 w# s5 f3 [& x6 B( G[0 O/ S1 R- l6 M
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( h/ \1 p" f8 E- {set i+ e  b9 _/ y1 c( t. ?
( i + 1)
. q) C% S& S! l5 h" Z
]+ L7 l: [0 y; X8 o4 n8 W
let j 3
4 y6 _5 H$ I4 d$ G& qlet sum-money 0) h5 v  e; ?/ r) c0 b0 {4 x
while[j < [trade-record-one-len] of myself]- U9 H  K& |/ m
[, H$ O$ l1 U7 C. L& v3 {
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 \9 z- k* H7 P9 y
set j
+ p# W9 F2 @2 B) o. W3 S( j + 1)
$ x) ?# C6 _  C2 h
]
( k% w3 T% o6 j0 u  clet k 3
7 G! q+ q0 V+ d) i$ g! }; dlet power 0
" B  M/ i* C9 x. |let local 08 f: _" r4 f5 a. D1 b# u8 q
while [k <[trade-record-one-len] of myself]# X7 O9 a1 n6 u: b
[
) d2 \! ^8 B! `' ~9 i' i7 O5 v9 X' vset 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) - X/ u; {6 w! t9 G. N
set k (k + 1)4 f; C: j* B# v) B& `: k) O
]
2 B1 Q3 x* `# F1 m. o4 c' bset [local-reputation] of myself (local)- d1 d/ r4 N7 F! n' p2 s( w
end4 w* F. A. w) s) i4 ~  D" W. s

( f$ W( i  F$ K/ Yto update-neighbor-total# H9 F: D' d+ E

) v* B% O. Q" h; t# j5 O  Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 H. t& k2 n# N1 v) Q$ T1 G
4 r0 \- i: Q4 m" r" b- p
; R. Y5 w& \8 v  u: x% D
end4 K. j) G% C* A3 R1 |9 a
% X0 F/ e1 n2 S2 u/ N' P1 S
to update-credibility-ijl
( I  n2 N5 L# }
5 W- L5 A  a- c4 G( K;;
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。( F2 L% j9 k+ M+ }
let l 0
1 o, Z+ a, r3 h- X+ xwhile[ l < people ]
# f0 P( _4 j! ^% i, M;;
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, g2 D1 M; I5 Z( c% {% K
[4 e- J5 _6 ~$ v% ~; R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: ^. u- ?' G6 U, H( S# O/ wif (trade-record-one-j-l-len > 3)
0 p7 |  X; R: h2 c) f; V% g1 h, G[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  G- v) w9 T/ _# s/ f
let i 3- j4 b# k% \+ V/ p: m$ Z8 v
let sum-time 0% T1 m2 ^$ Q- G, W
while[i < trade-record-one-len]
' e# D) E1 e. }, e( J[& z. a. T5 M. O  L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 E! _/ b3 \, n7 x; A1 s! E1 vset i
% H, h1 X; ?5 @% w! }8 m; s2 P, c( i + 1)
  @' s# Y3 N1 W: o
]0 k! l4 i' u4 R# b$ F
let credibility-i-j-l 0, O/ L1 f$ w! N: ~7 W5 Q
;;i
评价(jjl的评价)
4 A9 S$ v3 Z  F& p# a1 N# clet j 3
/ A6 o- W# R& |; W+ q* Tlet k 4
: J! D, }( O$ Lwhile[j < trade-record-one-len]" D  t( m2 \" @9 j( I6 O1 c0 J8 e
[
4 _& Z+ ^8 i' D7 \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' q: v* z$ j5 L: Y2 K! A8 g9 \
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). L8 h4 k9 ^& h. U4 ~6 ]; c7 V7 V( Z
set j
- [* a* Q9 r$ W3 g9 I: L( j + 1)

+ t) Q5 T' W+ {" a]
. t6 N9 ?: W5 Q7 b7 @# F' Kset [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 ))
7 R, n: J+ a; [+ l8 u/ t) S0 h" @* ]* M

, A' X" q" T1 Y6 J1 s4 L% W! a& rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, b/ P$ |% J6 C: t, X0 a( L. l;;
及时更新il的评价质量的评价% G. b" ]3 j3 A1 M* g5 a+ z5 o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% n! E9 h" g1 d+ x" `
set l (l + 1)
% `$ h7 d8 A7 ?/ S, Y- e]1 h" i2 o7 n4 ~  O, E$ @
end
. s: J& l8 F- K% ?0 f7 Q$ a- j4 R1 @8 G2 I
to update-credibility-list
' a0 D9 I& Z* e, a- tlet i 0, k  h% s& G8 [
while[i < people]5 \  \8 T. B5 K: R: X4 \9 o
[
2 i8 ?; m; u8 }  c: P$ {" a, S$ ulet j 0
+ b0 o. Y. t% t( @  T4 W* glet note 01 T* F5 S3 X: [5 i
let k 0
( A$ {! b' D7 a+ F: K;;
计作出过评价的邻居节点的数目
2 A; g  q3 u, J' x. hwhile[j < people], W- X. j7 U* Q7 |
[
0 y+ S- A# S; @6 Iif (item j( [credibility] of turtle (i + 1)) != -1)
/ g1 e' u) O* @; N" `0 Z;;
判断是否给本turtle的评价质量做出过评价的节点- U( J0 K$ \1 z$ z7 t
[set note (note + item j ([credibility]of turtle (i + 1)))9 I' Y  D8 [1 d: E2 [0 y
;;*(exp (-(people - 2)))/(people - 2))]

1 ?' z+ g+ ~% h" y: F' a  q( Bset k (k + 1)% e' Q5 l4 o8 v' M  O: Z
]3 H; S6 O7 N0 R. ^6 z/ ^; \
set j (j + 1)$ {( Y6 c. H& o/ V
]! k. ?: W) Q" s1 @
set note (note *(exp (- (1 / k)))/ k)
  D2 U, l9 J. a$ y+ Lset credibility-list (replace-item i credibility-list note)0 x5 W+ Q& Y3 H9 i4 C/ k5 ~4 A
set i (i + 1)
& H# k. C- n# y' n]
, C# t3 o! V- I( P# U) uend
6 N' C, x& E) D8 P& i) O' H# C) v  Q! Y$ ?  Q: s, a2 c
to update-global-reputation-list! n- P9 Z$ D: ^& i3 F6 {$ h' N
let j 0
& ^5 |" _" U( k1 ~, m) Dwhile[j < people]
* }' o2 [- Z# T[
; l) V  H. k+ C! C, p7 ]( Dlet new 0( e: d8 h5 r+ ]6 m# D
;;
暂存新的一个全局声誉9 I" a1 D$ v' f2 l
let i 0
" \& X* M3 [: k% W0 J8 O7 ?let sum-money 03 s5 Q& h3 a4 s8 [& [. z& R5 P
let credibility-money 0
( g% a. k, N, ?) jwhile [i < people]
! X" _! J. Z+ U2 F[# @" W: `- W7 o$ u
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), T7 O$ t9 g  U  G2 e. D7 m! n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 H: C+ ^9 k7 ~9 x5 e# D) p: C
set i (i + 1)
& C- E, a  n) q/ C3 s]
4 J  i& t) M  L  g" V: |let k 0
1 P- m8 @3 _% ~' M6 glet new1 0, o) t5 ~" X- M) O% |+ k" g- ?
while [k < people]
, `1 S2 }) w) m' X5 V3 u, ]* w[
( U& n6 {- U4 h$ b) Nset 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)
- a" `0 K8 C0 V7 tset k (k + 1)
0 L. J; v1 }: T! b* t( n]
* b/ q) l  w  `8 D- ~( Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % [' O( y) ~  X: Q- {, {
set global-reputation-list (replace-item j global-reputation-list new)1 o* X; A; q* S
set j (j + 1)# r2 P; P$ W: H8 u; L
]4 t% w5 E: ?. R; [2 @% ~1 `; _
end
- ]+ s- I) ~6 E# y( |( p' I9 m4 P
: @; s& u2 L3 D2 N
! g5 i6 x' D2 ?- i2 E3 F$ O  A# t3 ~% b
to get-color
/ B2 N* C! j, l9 ]/ m3 Z+ o% u! l4 c0 C# N; K
set color blue

1 Z: u% Z" t2 d7 f! dend9 z& F9 k# l, h  ?( ~, K$ v$ @

3 U) \6 I4 L6 Ato poll-class, k. s, p% O: z# Q2 ^
end
9 W6 o5 n/ i9 Q  e5 S) ?
- U- \, f; t) [8 `. Y" `! N; gto setup-plot1
: B% [- h' |, C6 _4 @
( r" I8 Z/ s; t% f+ G0 [set-current-plot "Trends-of-Local-reputation"

  I  {, u1 P5 I( H: g- G% f8 M' b5 [7 b6 H6 [0 o
set-plot-x-range 0 xmax
- o8 p7 ^% S; V8 _+ @* _; u

9 g* v. {5 u3 V- r+ G. bset-plot-y-range 0.0 ymax
3 s7 _% y6 Y7 C4 J# i, p1 ]
end
% A2 k7 l; b  X# {  t4 W8 P
' _( _7 o3 O. e0 b3 gto setup-plot22 M* F( f* x: b1 y0 E

/ ~) \/ T( W! x. T: ^2 Tset-current-plot "Trends-of-global-reputation"

$ b0 r1 S; u; i# D( b2 K4 |* ?  X
& k; v2 ~+ Y% ]1 N# T( pset-plot-x-range 0 xmax

5 [- g9 X. m; o0 A  N7 [4 _: U$ A
( L# p4 ?" p8 {7 ^- }2 t  m6 T' Iset-plot-y-range 0.0 ymax

1 ]' V* E0 }* |- @7 c. Uend
$ T3 B/ q% F# H3 i# c5 j
) T* C6 l0 t. A6 q- z2 eto setup-plot3
$ Q( B4 f3 S( J: ^
! H& E8 o7 w" _- mset-current-plot "Trends-of-credibility"

: ^' F: o1 y  I- ^. B$ v. Q# {  _) u9 e7 I8 X1 S) |
set-plot-x-range 0 xmax
, i" R% {" z* l$ K6 W/ y
% W8 E( _. ]" m/ @7 w
set-plot-y-range 0.0 ymax

7 P1 r( B- R( T( v+ w$ ^' S# D8 M4 a, xend) e% @: M9 W" U' D& e" {

) X7 N; k* p1 x, f# @* e% n( W2 Ato do-plots0 Z' G+ j" n+ Z5 V( P
set-current-plot "Trends-of-Local-reputation". k# i5 {- ^8 z+ i
set-current-plot-pen "Honest service"
2 z% V+ o) @- @& b" n2 [end
  d- j! _, E" f- i- k6 k6 Y+ B. z' O" L# \7 X
[ 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.
! x9 Y9 U+ g* M! S
$ B& ~8 ]9 n# X' c8 y5 H9 `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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