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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:8 D- K8 J, Y& j, F, W# G
to do-business
  A6 n. @0 ?+ ^6 w/ b rt random 360( [6 @  j; N: B6 o
fd 1) Y1 O7 ]; s0 ]
ifelse(other turtles-here != nobody)[
  Z5 w  J) ?2 o( u   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' |0 j  b3 B/ j
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 E: ~. ^( ~% A& r9 t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) J2 r4 D& H  ~5 P) v" v4 R   set [trade-record-one-len] of self length [trade-record-one] of self
/ q) L3 V% J% T" ]! U' G7 d# U   set trade-record-current( list (timer) (random money-upper-limit))+ `7 E! t+ H0 `: _

# W. A' Q6 c# X2 l4 M问题的提示如下:" }& ~$ `8 ^  h/ n: ^/ [7 a
, q) C8 c: m: u# j  m6 W% T
error while turtle 50 running OF in procedure DO-BUSINESS: f$ p& A" R3 O5 k
  called by procedure GO
1 {; A3 i8 m, nOF expected input to be a turtle agentset or turtle but got NOBODY instead.# m( f. z5 P4 i5 j4 I  Q
(halted running of go)- A5 {7 ]% g- o" ~- f$ Z8 W
9 t' d- ~% N" ~0 C0 Q
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~~1 D/ E6 d, H( i5 c7 c! E
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
+ g' I% T' @; Y6 f) b; k6 D4 X; bglobals[  o4 A' B# m' c2 K! y9 s
xmax
. u: h; D3 h- i# v8 \8 w" b" Rymax
: ^$ Q4 D6 Z) Z/ yglobal-reputation-list. ^6 W6 P7 e4 f: a( B

7 x! }6 K" ~+ g;;
每一个turtle的全局声誉都存在此LIST
3 Y6 `9 }" ?% k" o$ }! I4 ]credibility-list
2 w1 S( a/ J2 o/ {' u7 O;;
每一个turtle的评价可信度
1 T+ V6 L. n. G; O' Nhonest-service
4 n" g; j2 d9 Q4 w/ r% p4 \unhonest-service5 q/ C" D1 ]1 I+ v, w3 N! M! U8 i9 z
oscillation4 g3 O2 x5 U! t$ t* n. G8 x
rand-dynamic
9 x$ V4 {  f/ @1 X( P( v]1 @6 E2 W* R! C/ r. ]
2 }: E5 |: s7 J$ S+ g; P/ ]
turtles-own[  V. J, e  f* w# z) V4 O
trade-record-all
3 k, L, a6 S4 S" r8 z0 b;;a list of lists,
trade-record-one组成
  B* S, K. k; e* u4 F/ ytrade-record-one$ V0 L9 K: @- k+ c$ K) C( J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 T, d- H1 O$ c: J5 x0 o  \* r$ g) S/ x' [. \1 a$ z! {! t+ N
;;[
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]]' o" }1 S# Q' L/ |5 n
trade-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]
8 U. {" L1 b' O' J' l3 U. Pcredibility-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 V+ a% g  q$ E+ ^+ Rneighbor-total
4 \3 n& P! M, j: T% V& ~;;
记录该turtle的邻居节点的数目
8 Q, J7 B- Z/ w5 D: I: Ktrade-time% h" c8 J% ?" F: r# e
;;
当前发生交易的turtle的交易时间
( r$ ?6 ?8 A+ P/ u9 \appraise-give
+ H/ f, G" D3 N$ O" ]; Y. n8 {;;
当前发生交易时给出的评价+ _1 O1 C+ ]: n, f
appraise-receive
- f" w+ z' u1 N3 z& E' v1 R;;
当前发生交易时收到的评价
1 U. `' B# R- eappraise-time) }6 c; k  [8 X2 P
;;
当前发生交易时的评价时间! [4 v) x7 s4 g2 P0 L* f) V
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 h% Y$ V  S$ C1 V0 u* \# J7 @trade-times-total( N# Y6 @; K' f
;;
与当前turtle的交易总次数
" {  K& t8 \( k& N4 y/ o1 Dtrade-money-total
$ ^9 s! Q8 ?0 y$ C: i! }3 L;;
与当前turtle的交易总金额/ `2 z! i7 c( n3 R9 t
local-reputation
4 e! _& |) f: G$ }! j- B0 Vglobal-reputation
' ?: Y% x( t) s) g5 @/ i1 [9 T: _credibility
! W# B9 B9 ?) K- S( J;;
评价可信度,每次交易后都需要更新
5 q$ q6 Y5 i8 @credibility-all' T' \9 b' H6 r
;;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
4 U/ @* x+ K' J" f- h4 f. z2 M3 \% Q- l# P$ j6 I, Y$ b
;;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
( D7 o$ X  z9 E7 z% x) ]credibility-one2 B/ g6 F( t6 O' J- y) l
;;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
6 I! ]. n. F( F  @global-proportion
5 f+ M$ x, L! l( \' j) e: b, ]: X5 @customer. {! B5 ^3 a% s- Z9 |: X
customer-no
, M) P3 D# _3 Z0 q7 u& m  strust-ok
) |  ]4 a2 x% O) E2 [  u" a! Utrade-record-one-len;;trade-record-one的长度; U" a( V$ J) l- x# U, s
]+ ]% m) u) j/ e3 l8 i) m. v6 w

2 m2 m' M5 Z! a. Y;;setup procedure
1 J0 p' K" n9 x7 S* v
& x1 b$ ]5 D( W+ p- ~9 v& Kto setup/ V, y; \6 B( @/ H) R

: R5 X, Z& M. F- m) {$ ~ca

# N  [7 J7 {. W2 P& D5 O8 W4 d9 m
3 W0 q. B& d6 c2 U* }initialize-settings

/ h: @; |9 g0 @6 `5 ?" @/ w" ^8 }; k! c" K; b. r3 M3 ?
crt people [setup-turtles]
1 x7 y5 a" y1 o  l

! c3 i. Z# j! K6 B# G2 @9 a, Preset-timer
+ x% |* R8 S. l8 U
& }- j" v3 N* O* k1 p, A( ?
poll-class
, {- S* o- S9 V# W, p5 N. V2 d

. ]9 F& N+ h/ j9 h4 ~: bsetup-plots
  N. \' [5 z+ J2 k) Z- o
9 w2 {9 a3 t) e% s. P4 |5 f
do-plots

1 A! @# z- Z% W; Eend
4 y5 `0 R" d8 [% S: f7 K6 M1 K
/ p6 w2 `. g) R( l9 Tto initialize-settings2 L* F, Y2 @- l* c

9 B3 W: _) V& Cset global-reputation-list []
# L8 s# ]3 j6 A& e! ?

% j0 M* F7 K: K, F& L3 pset credibility-list n-values people [0.5]

$ K7 B$ ?2 _2 a$ K$ w8 ^# t! u/ f# |# o5 r: @; z2 ?
set honest-service 0
! B" B% }9 X( G( A7 Q' I
. ^3 R! v, q6 o, J2 J: S
set unhonest-service 0

( I9 h2 B# [  Z4 _- r2 t4 i# @+ F- U( l
set oscillation 0

2 D- Z* x# z) J* i' Q3 `9 l
( |0 o! c7 s8 b- K- b! y$ R- T( {set rand-dynamic 0

- p# E/ w( J" _6 Q! q6 d3 yend: o" R# [" S" W* Q' ?: V! O1 {0 J7 W

, M5 M! z, q$ u0 J* jto setup-turtles 3 Q' k( J$ T1 O* v
set shape "person"- f( x" f8 f0 F. c
setxy random-xcor random-ycor' C  `3 S: x7 a6 c# J1 F  b
set trade-record-one []6 v7 y# X0 e& x# C) @$ o
6 u" Z) I) K8 S- v0 Y
set trade-record-all n-values people [(list (? + 1) 0 0)] * W  K8 ?9 n+ J7 g( F2 q1 n  `8 G

# z' R/ Z9 D# d# V! z& Pset trade-record-current []! b7 }- b- o- ^7 D- H
set credibility-receive []9 U: l9 y* u# v0 c" S
set local-reputation 0.5
# s4 y  l8 j( vset neighbor-total 0
+ m: Q. G8 u$ K! s* n4 g: [set trade-times-total 0% V9 c1 k8 ^3 D# _7 @  s
set trade-money-total 0
! b; B2 ^1 F( [/ `8 S0 sset customer nobody: S5 \! t; f% D& P8 C
set credibility-all n-values people [creat-credibility]  ]1 D3 s" \- a) O0 E4 w+ a% a
set credibility n-values people [-1]
+ j& [) Z5 p0 g; zget-color: z2 @1 _, q% n- C, [

! b  U3 F+ G/ Y7 b! _6 ~end' a# U. ~- D: E+ x: s3 n

+ W+ J* T7 e! p8 K% S. K9 F3 Zto-report creat-credibility; B6 o5 F& z* `1 x+ ~  z2 T5 Y
report n-values people [0.5]
0 q4 o# v7 K. g7 w7 d6 mend, r7 g, I' J4 k4 E* i( @& m+ w
: I4 ^6 [. ?( M( ^
to setup-plots
& f& h6 f3 u8 u# {' i. O- w3 r( H* [) d3 f* c
set xmax 30
' n, q; Y/ e. @; U( q9 r

; n- [5 ]4 ~5 z; {. W6 X* t" vset ymax 1.0
7 f% X! C; c" c# b/ L
. m2 L2 e4 Y5 P3 |, `
clear-all-plots

: O( S* J' [8 o+ ?* A0 T5 g. y5 j. R& m- }% H$ u
setup-plot1

( U/ k# y# h! r0 C
" u' Q& S/ H3 `2 L) N: `  Nsetup-plot2
$ A* d" ]& V/ u9 F$ a

  P' q2 g& D. S! _. G6 m& c& b& b- Fsetup-plot3
4 Y5 ?, k' P: W/ R7 y
end' P$ |) R2 G* Q/ g2 f) p! b
+ g+ t+ U3 |4 d+ X- n* w# |
;;run time procedures
& T6 V- ^; B8 D& G4 S8 q: m; z3 ~! l! r0 i; T" l3 U: R
to go+ x0 c' w9 g! d& x) ^

. z9 h0 W3 c& H; v6 [ask turtles [do-business]
/ `3 n& v) p" p# z4 t
end
( A% S4 a" J: N1 C" T* T! [; }; ?0 p0 @! Z$ p, s: A; p
to do-business
7 V9 e  {5 g( {( n* V
1 j6 V5 Z; Q) D  m3 ]) G
- _" C! j, r6 V
rt random 360
/ G- s  n4 u. W% H& ]
) N: h" l, G6 A3 R
fd 1

+ C" b. k* N2 ^$ e3 }; |3 b& Y0 P; d2 D7 c" n3 _$ p5 C% Z
ifelse(other turtles-here != nobody)[
; [, U' P0 G! e# J
& M6 B* \% o! y1 q/ N! i
set customer one-of other turtles-here
5 X8 a0 ~9 _3 I: U' D' {

, D; {8 i6 g+ V! i5 A;; set [customer] of customer myself

  X& k2 p& P% x; c. [
  s' M% @9 l+ @1 E0 mset [trade-record-one] of self item (([who] of customer) - 1)0 i2 ?/ b; G  f2 A) \) Y
[trade-record-all]of self' p5 Y$ M% t3 r9 e' L! A8 b# d4 I
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* E( L8 K6 d3 V3 ~
  Y. v( D/ t9 ?; M
set [trade-record-one] of customer item (([who] of self) - 1)9 q( }8 r+ W; f4 v
[trade-record-all]of customer
  @5 u6 V9 {' {. W/ K

* V, a; Y8 U! i' k2 xset [trade-record-one-len] of self length [trade-record-one] of self
! x* W6 b. B5 U' c
3 q5 ^* G. s0 t" S
set trade-record-current( list (timer) (random money-upper-limit))
( x+ J- v$ t0 L

, Z6 o( d0 l& J5 ]ask self [do-trust]
: q$ \" [1 x- z% V/ D;;
先求ij的信任度/ D% Z% S6 z4 I$ C' _. H% z- f
. W* L) o7 E1 Z" ~+ B2 G9 d1 H
if ([trust-ok] of self)( B0 `/ p; {" C- Q% m
;;
根据ij的信任度来决定是否与j进行交易[4 y& X/ C3 J. C& B6 r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; i3 ~5 U! a$ L! f6 d4 u" F
9 I! w  G$ r. Z4 Q. w4 F* R. o
[

; h& Y( R! r' d' z7 E9 D7 D' {/ g. m% M! B' p& m
do-trade

0 E5 I( v4 i) n9 A* L0 [+ R3 {, b! ?2 \" V+ l
update-credibility-ijl
3 B5 }/ p% Y8 t
( h" Q" m" s8 h8 M# w
update-credibility-list+ c$ r0 K& m) B  n5 d. t1 ^3 l
! o; l6 f5 E) f# ?# [

# {7 ~- b0 v" S& P7 ?4 I9 uupdate-global-reputation-list

- K& q9 a4 T# z1 b" E+ Z' W/ L; i( R$ b8 D7 R" S/ w. D
poll-class
8 X( y( L& d4 f8 M+ H- I

" b, }, W7 \, b) K7 |+ O; W# C1 Oget-color

* \' l$ G9 E/ u! f4 }% R
. }# U& [5 X1 l% L& s]]1 w3 r7 T/ q2 `; C7 _
6 Q4 d8 W, Z0 a
;;
如果所得的信任度满足条件,则进行交易  V: }5 V3 S3 L9 B+ \& _

) ^7 S2 u1 p1 t0 S2 z6 R3 f0 b[

% g. u. r( _/ Q( Q8 g! U% }
0 X  T% Y& g) H# b, q  o" n4 v& Irt random 360

$ A% d3 a8 N2 ?. b) M, Z6 l0 a5 [5 o, H/ z! Y' N
fd 1

6 y" h4 q# j9 p) a0 h9 s# W6 m
. D; M/ \2 d! Z4 v]

" R; Z! Y, J0 e. \2 R4 n3 H! f' K& a* E8 s2 O. a* v; _3 y
end

4 Z$ g* ?2 O+ S; m& _! o  A
' U5 v5 c- R1 g* h4 [to do-trust - L3 \" h( v; g: x
set trust-ok False) w! _) C0 p; g/ N) F

1 ~4 T6 I' b/ k) Z# l) l

  i- ]& y& x1 w3 q* }/ Llet max-trade-times 07 M) U& W) @6 T' o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 P1 y, Q, z% K. P- R) Qlet max-trade-money 0
5 h% U3 i: |( h2 Z" q# c" Bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ w! s+ t# B  `
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 |! t: b+ _7 M$ k+ K& ^: L' c

; {6 L! T3 o% P  d, g1 s
8 u  s& c. g$ N- s" z
get-global-proportion7 ]( n2 }2 u/ s9 Z) L7 E) q! A9 j/ \
let trust-value! g1 R# I4 L' R1 ~+ @) v
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)

0 n+ G5 N/ M3 H1 T8 uif(trust-value > trade-trust-value)
) B0 q& l7 u: e  L+ u* L[set trust-ok true]0 ^0 Q# z8 B0 f# J% I/ |8 m
end
# P; E3 A5 m" g& [3 F2 _% U5 [$ U/ M
to get-global-proportion& n: {9 K3 ~' l# `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 X1 Q" G0 H$ r9 i  c- }* V* ~3 V" E0 Y! V[set global-proportion 0]; E- q: X" _1 E( G
[let i 0
1 D" d( u' m. e1 s8 P* s# [6 xlet sum-money 0
; ^% h  P. ]2 y/ Q& mwhile[ i < people]
  m0 [( R) R. ^% ^' H% g8 d[" J2 U  k" i% p$ }1 k1 |$ _
if( length (item i
4 h2 u# p: h6 u4 C* f; z4 _[trade-record-all] of customer) > 3 )

2 F, R; R; }0 D- I$ h0 {7 r[' L0 L8 l0 ?. j1 o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 d# B+ M0 [* T0 U
]
+ v  k1 X: a& `1 S+ `0 `! n]
# ~$ F- ?5 u; ^6 w! j0 ^let j 0
% k( Q4 y$ l3 \0 p# V+ K. S, Klet note 00 `9 L$ S; b# H
while[ j < people]6 Z9 f  I" Q2 K- s  J
[
2 Q' X9 }7 ], [if( length (item i8 F( ~4 }/ D7 b7 s) i9 }
[trade-record-all] of customer) > 3 )

2 j3 S/ ]/ [9 |  L4 q2 [[
6 S4 m# N$ A8 f/ M  nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 w8 l1 p% X; o! p0 q% a3 q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 x' E+ n) v; n+ w  a6 _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 P5 l) D' Q2 u" G]2 E& u5 L  j  u& u/ C; l$ W
]
- C/ N2 B! F/ Z: {$ S8 F, ~set global-proportion note
0 W; F0 W5 {/ r]
: e. w8 l/ V4 wend7 q& l1 W% k4 w  Q  I$ b& d
# R& ?8 P' Z8 z- j. _& B
to do-trade: `) ~; W! F) W2 Y
;;
这个过程实际上是给双方作出评价的过程6 Z, D. |7 Q8 u9 B( v. c+ e; w  [! B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, t$ @* a' d3 q4 _* o) `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" W) Z. V$ h. x; z+ }set trade-record-current lput(timer) trade-record-current, W0 N8 F" u$ l% H
;;
评价时间! P7 u6 a3 I, M0 c
ask myself [
% N: a+ }9 ^* O8 L3 oupdate-local-reputation! `* D* m) f; e7 Z. _, n
set trade-record-current lput([local-reputation] of myself) trade-record-current; ?4 y/ R% U) w' S
]% L: h4 M/ N' y( v. t0 d, F8 u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- j# x  r: n- a- z# j+ E;;
将此次交易的记录加入到trade-record-one  R. n7 h, C- Z+ _* L+ b* B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 k/ A) n/ \' o; W2 rlet note (item 2 trade-record-current )& `# T  k- W6 |7 g% \) u/ `& b
set trade-record-current
% `2 M( V. e* N. J9 Q; v(replace-item 2 trade-record-current (item 3 trade-record-current))

+ Y( R/ J( G  j# Vset trade-record-current% L. B; M, {. }2 D. m) ]( t  ]$ X
(replace-item 3 trade-record-current note)  u9 q9 G9 g7 k

1 i" {/ N3 c6 h2 C( L6 `. m! `2 x
9 Z9 i- w$ p  f2 I- G
ask customer [
2 b: u# J8 h$ z8 \# |' bupdate-local-reputation
1 |$ K  @$ N2 M: R/ f/ G- Y  Hset trade-record-current
: u+ i$ {: t5 }# D3 M0 {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 q, B/ S% @9 t, Y8 []
* a) d+ F; u9 I( @& G/ Q6 i" o' I# Y
# i1 ^: T" s5 ]' b+ ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! R0 Y% e) q" L& v3 E

7 i! q' y. l" y; B( w% R6 tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ {, M- N9 |3 y. C
;;
将此次交易的记录加入到customertrade-record-all0 l8 j: ^+ a9 _$ K. q% M' P  W
end
; Y, B: d  l% ~3 O
# }0 g7 \: b1 T& [to update-local-reputation. t' `) R- ?5 k8 ~
set [trade-record-one-len] of myself length [trade-record-one] of myself" a! Y9 C  N- w$ p  Z6 D% F
6 `4 k9 F$ E7 R& w1 X- y
- ^/ J2 V0 d/ X3 X- p3 b1 ^
;;if [trade-record-one-len] of myself > 3

  q7 h- s+ y2 _& a: fupdate-neighbor-total. c' O& U4 c5 J2 \; V- T
;;
更新邻居节点的数目,在此进行9 m9 E% ?; @( O* S& d
let i 31 C5 B. f. S+ i5 R
let sum-time 0
" [: q8 W8 Y6 y3 E8 Z8 Xwhile[i < [trade-record-one-len] of myself]( }  t" O, f* W! y
[% v% {$ w) Z% j# |- q" M5 W2 e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, |- o& Y: x0 p. I8 mset i
: ~) Q$ A3 }7 n" O4 Q( i + 1)

% Y9 Z' l+ I" Q& ~]! O  x) |8 ?( c0 L$ y4 @
let j 3
8 X* G7 W6 P; @let sum-money 0* t; @5 D3 k- Q! s. e
while[j < [trade-record-one-len] of myself]
2 c5 o+ _5 L/ e[
  g# L; P% ~' C' o9 R5 Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; y, F" N- Z7 f; e& ^- ?set j
, x5 {/ Z. e% V  M( j + 1)

( @" d' N7 g9 i  b4 q# D]7 Y7 E: m8 T2 u) A1 [) y
let k 3% v/ c; @6 O# x9 e; f0 c+ ~: }
let power 09 a7 |9 ~6 L/ L% a- L
let local 0
. W3 S. X# i/ k! z4 c1 Rwhile [k <[trade-record-one-len] of myself]
: |- {. w" R7 k/ d: M  N$ c) l* x) j[
9 _1 O4 S: p: O3 L( o* m# b( yset 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) ; ~* z6 \& O4 C
set k (k + 1)
( B# v4 ^% U4 n5 h]& w; X! r3 B8 H! S8 R* D  P
set [local-reputation] of myself (local)! N6 j  Q  d' v: r/ V
end
- v3 b; J- N7 R' S- |  ~3 ], K& S4 O3 H+ B
to update-neighbor-total" a# R1 I/ M, y) N
4 f  J5 M- X3 K9 {+ ?, Q/ g9 o0 u% R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& d' C; Z! _1 e" l5 J6 S( W# h1 o. N# \& H) N
. _4 I+ m, s- ]
end9 c) u3 E0 Z3 p% h
8 P3 a! E9 G+ |
to update-credibility-ijl
+ t% f2 ^7 K  P" ^  a+ w5 r4 V# `; [2 M9 ]
;;
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。& T3 v# b$ z+ R3 N- L: v
let l 0; z$ s9 |4 L% F% k# a3 f; G' j7 k
while[ l < people ]5 Q# I' L& `; I/ E4 j1 [! b$ 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
, A) p; d/ X% H% `. q) R- E8 V[3 x, s& D; L# R7 Q! _1 _5 V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 A- f, q3 P! y7 m- D% Kif (trade-record-one-j-l-len > 3)/ R$ b  _" F5 L' |; ~
[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
% c+ v' l! c7 `  y6 S& ~: wlet i 3' ?9 E  J2 |9 j
let sum-time 06 L' k6 L2 p- t7 z0 C# Y
while[i < trade-record-one-len]
7 l  ~, ^( q: f- l- k0 A- M[9 I  Z( X' g2 D, R* J6 q3 r  n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 R0 h3 @9 _( }9 O. \) \. C
set i& V& k0 }3 Z$ G# ]& \
( i + 1)
: T! y7 U6 C- c. G( L* P' v! a
]
; X8 p& _& S& O  [# c4 b$ V# ^, Ylet credibility-i-j-l 0% C: x1 [. F2 a+ H; k6 S
;;i
评价(jjl的评价)" a" y6 d, v5 n: V% `7 c
let j 3
( o1 X( _( u$ L" B( [let k 4
5 G+ M: x7 C& v  twhile[j < trade-record-one-len]. o, {7 I; \5 J3 e1 {
[( H) F% H7 ?. {) W+ G" Y7 b2 Y( k
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: e( s  p/ A4 ]5 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)
- K6 i% ^  q2 }$ t9 }! e  P$ zset j
! A! p6 z" o  _1 o: ^6 z* I3 _; M( j + 1)
- U& Q0 g7 A2 `8 t$ a
]4 _6 d, i- X6 L$ G
set [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 ))
9 Y% e9 |4 i* H  `# w( q7 U5 X* ]& y/ M& r9 |/ C. G( a

3 o' T0 B! z; [3 o% Y7 L0 ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ y) `# t" Q- H! u9 Z;;
及时更新il的评价质量的评价; g* [6 B1 A- V; E" w* c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' m5 s& x4 K* G6 }1 f$ }
set l (l + 1)* z  W" d. F, Z1 r6 p2 Z2 o
]
9 v* O1 G1 F8 o" M7 \end
+ ]: O* f7 F+ A/ r/ G/ ^8 w$ I; s( @
to update-credibility-list6 u1 ^- H$ i5 j) p0 q
let i 0
0 u+ a& s- r) s; ^+ Lwhile[i < people]
6 Y8 }1 `% r5 j& w; y! m[
0 E$ F2 ~3 m9 u3 O# y, c& Ulet j 08 m) l+ J8 C3 [! r! G( ?1 ^1 c1 m
let note 0
* l1 `2 c( V( A5 ], L7 Qlet k 0; Z2 |* i9 J& f6 p
;;
计作出过评价的邻居节点的数目% r% Y0 S& J. S# T# t- Q6 I
while[j < people]
: N- v: Z$ s4 e3 [+ n[
2 d9 }: a- I% E9 y  g! q1 I& o) wif (item j( [credibility] of turtle (i + 1)) != -1)( @& V7 O4 W' F
;;
判断是否给本turtle的评价质量做出过评价的节点* V$ A  w- \2 ?1 }+ m3 s3 c' {
[set note (note + item j ([credibility]of turtle (i + 1))). h3 C# L; H6 ?3 ?8 p6 C3 @
;;*(exp (-(people - 2)))/(people - 2))]

0 o2 w% I1 J0 U6 m- L% c7 R5 l0 Tset k (k + 1)
) u4 ~( P1 M$ f7 d+ y2 a) P3 P# ^$ l0 H]& k+ d9 _7 h8 \1 l# ^
set j (j + 1)" e3 Z3 R9 ?2 t; e7 g% X2 [% N3 Z
]4 s: \& J/ s9 e* L  a! t/ b
set note (note *(exp (- (1 / k)))/ k)
" f6 x6 l. d% }9 Kset credibility-list (replace-item i credibility-list note)
, H) e3 v& H3 I2 Z$ O0 r0 ?set i (i + 1)
# o  h; j; P) Y) J7 e4 I0 X]" @$ x0 ?9 T% M+ Q# u( A. g$ V
end$ a% N$ W0 x: Y+ ]7 G. p
; |6 M( u5 j8 d0 J5 Y3 Z/ F/ @
to update-global-reputation-list
, C" o7 f+ {3 r$ Mlet j 0
  l, R) z$ f% z4 g/ g8 a1 Pwhile[j < people]" m5 |% q4 s9 c; z; R
[
: c4 r8 C" V+ J* Z& Rlet new 0* r/ z/ T6 r- W( U* Z
;;
暂存新的一个全局声誉
. q" M1 Z3 F& hlet i 0; P; V$ Y7 C- Q2 `: b, n+ K$ s
let sum-money 0
4 ^$ b! J9 H) \8 ulet credibility-money 0
6 H; h$ X  D2 H  T  ~3 R% G4 xwhile [i < people]! X  V+ m7 {/ r6 e
[
7 |* T0 R% z# x7 X* r+ I. h4 ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) B: n) J( [* i# r6 Z) K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 n& z# [2 {3 k' y+ ]( k! |7 A
set i (i + 1)
" D# }# ~/ H) y0 |( G5 b+ L]  b" I9 d, w- r8 ?' v! n' }
let k 0
* P' \- K- s/ R' `8 Blet new1 0
* {1 X9 o0 o. n; z2 Jwhile [k < people]+ \! A& @! Z9 E# i4 i8 Z; {
[# X1 M* x" r" J! M! i$ U/ O
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)
8 s7 \- r, _" J9 rset k (k + 1)7 q$ _! ?3 a$ v6 p3 G
]! j9 _' @% v, S- O& X( @1 x) L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . \& l/ O& R1 U$ ~6 I
set global-reputation-list (replace-item j global-reputation-list new); X' }% A% L8 S' a* X: V: S
set j (j + 1)
: }. v8 }! [+ g, n9 D]
5 i6 i( F. B* \( i, C/ e4 {end
* T. n+ F8 h$ W7 ~6 B- n* X& ]- p  I8 o* J

  d- R; P( ^' Z  Z# n
( }5 k& U/ O' M1 h  ~. \to get-color9 \- z7 @! r' u! O- E  K

  H7 v! n. u, g0 a4 {8 ]0 sset color blue

' p% A7 w6 E4 O* r3 uend
+ r* r4 v1 g+ m7 P* E0 X+ [/ O! \3 c& R" e
to poll-class4 J( u5 S/ R- V5 a: o4 F9 ^
end
! a$ [, J$ P1 G9 F
3 P9 e+ X2 x+ t8 B% Z+ T! n8 pto setup-plot1
' w) ~5 p1 q" W) t
5 j  {" ^5 t3 zset-current-plot "Trends-of-Local-reputation"

! Y5 [1 t8 y: l  k7 F. }4 y% ?( m& t+ \2 j/ d
set-plot-x-range 0 xmax
5 N6 A, w3 `* C2 L; R% u8 {
/ p! q+ p1 P, g1 P" ^! H5 @6 X
set-plot-y-range 0.0 ymax
0 ~% B. E8 w7 o% a. m
end6 Z: b+ ?0 Q& i1 M* R4 J
& S2 `% l1 l% D, w
to setup-plot26 }% H0 H5 A/ l, B& X- W9 z

4 M' H* T5 U6 Fset-current-plot "Trends-of-global-reputation"

2 i! s+ }# P; A- I# }' s: z, [+ Q4 `" V  F+ c1 I, ~# V4 J# c
set-plot-x-range 0 xmax

. m+ j# n& k  v% c3 B
- B! q' e: f8 `! s8 k7 Gset-plot-y-range 0.0 ymax
( }. S0 ?9 K% V8 p
end
9 K/ ?  B3 u3 M# Z$ t5 R& F: T  J3 }7 a1 ?4 c: [  D3 Y# N4 ]/ Z
to setup-plot3
% I) K6 u) R  R6 {& z: V  {8 {8 S/ A* ?4 Y5 }# B. X; H: B' f
set-current-plot "Trends-of-credibility"

2 d/ S4 G% d5 b" _6 Q" R( z) J2 x0 i9 {( l0 ^* c  J  `1 c
set-plot-x-range 0 xmax
$ L4 F4 N# A% |$ v- M4 k8 O! O

9 z: ~/ _2 `- G  [3 i0 Nset-plot-y-range 0.0 ymax
$ B0 m  U$ ~  m
end
! H& O4 J5 M& B2 t. N: O( p9 W) F) k9 _6 z- i1 w* q; G" G4 l; o
to do-plots, G2 F2 B6 R! K
set-current-plot "Trends-of-Local-reputation"
$ Q- \. f: q- W1 b& [4 o. j# U% Sset-current-plot-pen "Honest service"- [( U* F: W; K, r' c
end
1 a- [! L7 z5 H0 R: n/ P5 \! k5 G& t& l
[ 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.. O- a2 ]2 r+ s. e0 ^% r
1 j! W1 ]( ?. P  Y1 ?
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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