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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:
9 z! g8 i: B/ @- L6 M+ O9 `to do-business
' F% G! _3 l& G5 F6 ^ rt random 3602 o2 h% H# N4 Z1 w4 p) X
fd 1
: D/ j' u, G& O; J2 _ ifelse(other turtles-here != nobody)[
. s6 |& ?( y4 n6 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.
5 @, v; O; E9 z0 ~& `4 @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 y# y' H# V5 ]- H6 J% X% l
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- S9 h! y, D4 }' \
   set [trade-record-one-len] of self length [trade-record-one] of self
3 G1 d3 M9 ^% D2 x1 E   set trade-record-current( list (timer) (random money-upper-limit))
# I* F. g  b* \5 V, w, i6 r* Q. |  J/ ?, W4 ^7 _8 p. L
问题的提示如下:6 ~7 y; O; H' g
: }! `" Y6 N- {
error while turtle 50 running OF in procedure DO-BUSINESS
$ |( a/ m! ?. [1 X  called by procedure GO5 I8 y- f0 n5 @( p" C6 z# x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 h) d/ V4 M- T9 |: B+ O
(halted running of go)
% R# p% U( K( _8 V( e
- B5 F' G2 v  X. m; S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~~
# L6 Y5 x, P- L; Y. g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
2 Z$ _0 k( t  b* _9 Aglobals[
+ c  o' S4 J7 X- `xmax/ O) ?+ m0 _  ?1 X  V
ymax4 L6 K2 X& \, Z
global-reputation-list: ]8 I2 v$ O; I* T

4 |8 M$ q8 a- r: v; G& @$ a& [;;
每一个turtle的全局声誉都存在此LIST& v! J/ ?2 N( \" w7 C
credibility-list1 y5 b5 O7 r7 |4 l9 _
;;
每一个turtle的评价可信度
0 F) I9 s1 `: I; t* S, _honest-service7 M8 Y/ y! @% q/ p; a, J. X5 l
unhonest-service9 p8 ~. D) p5 @6 f  U2 }
oscillation4 k! R+ i) m1 H! E- J2 e# i1 ~& g
rand-dynamic
0 m% X+ z$ l, ]' b! J8 v8 F4 Q; o]% h" U& u- N' w+ b

) X& p$ j0 F1 lturtles-own[* C6 @6 i9 u5 v/ @% Y
trade-record-all
# p1 S! B* N+ v, p+ J; _: @;;a list of lists,
trade-record-one组成* Q8 \4 J/ {" p# q
trade-record-one
( i  G/ m6 U& M6 b;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% `# W. ~, k6 k* z- h1 M. t
" [4 v% ~5 O/ f4 S) c3 P  y
;;[
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]]
9 N# w( t* W' v, }. M: S* Ctrade-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]/ O- f3 h* Q) r; F2 _: o$ J
credibility-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list1 n7 q7 ]3 V* f8 b9 m6 h3 n
neighbor-total
% @3 k" B3 y; p1 Q4 R;;
记录该turtle的邻居节点的数目
9 ~' ?! m- l( S; f: L% N- }% gtrade-time
+ L6 v) Z" B& z;;
当前发生交易的turtle的交易时间
8 F1 q" ~( ~1 u% T/ a5 v9 _7 e2 qappraise-give- X6 X' h: ?/ [- G( F# W4 ]+ u
;;
当前发生交易时给出的评价
, [1 _) W! x, g7 qappraise-receive7 U) R+ O1 z! a  ^
;;
当前发生交易时收到的评价
6 H& D  n( J1 L/ e$ Y" h0 eappraise-time3 [: t- T/ h. |9 u& b, I
;;
当前发生交易时的评价时间
3 @9 O! b' I# \" E2 |* {local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- v4 r- w8 |. H( z0 h5 }trade-times-total
! x! m. |- L- v. ^1 \- D* V& E+ a;;
与当前turtle的交易总次数3 s0 B" Y3 Z& h% W9 k# v6 r7 q) A
trade-money-total6 z: {) ^( z) y; m
;;
与当前turtle的交易总金额
% |1 @2 }* }) k! ^8 M# T" clocal-reputation
/ u0 b6 G$ D, x. U9 @& hglobal-reputation
- O; P" v# O- o7 [; Mcredibility
- V) w. h- i, {+ Y6 H;;
评价可信度,每次交易后都需要更新
) Y9 F/ S  {; O7 Ecredibility-all; s" Y' D5 l' G9 g& m# m2 G. _0 ~
;;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- ?; s5 a, Q! L( ^" v' D0 r

( S8 M8 u; _. N4 w$ I. X;;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( w% q- I  z" u0 \, Q  \# K3 w
credibility-one
) x0 d' {4 O3 p* n. `" {;;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
) L) q  R- }1 ]6 C, pglobal-proportion! P$ e5 C& C4 H  e, D
customer
1 S* \" T9 F) G& [- e$ Ecustomer-no: a8 v( C, y) Z- d
trust-ok) h6 b6 ^4 Y) N- E* t
trade-record-one-len;;trade-record-one的长度
6 j% Y+ M  E( `1 z+ t1 j1 z( M4 i]
7 n: C; D* F6 Q8 e
- r1 ~1 n0 s" y' \;;setup procedure
6 [8 A5 n, R/ j2 ^: M+ ~. y. i9 ]/ f  }' j% t
to setup- E6 ~) ^9 j! Z9 E- K  _7 A

# H7 x( g. H0 @2 C; y5 R( fca
8 ]/ s- `1 d& r% T) w% q

; Y$ [; A2 J' X2 J, E. R2 kinitialize-settings
( Z: \& K) v4 U- ^1 I

0 r3 g( N  ^5 S5 n" pcrt people [setup-turtles]
' w" b) a) o! J) t$ X8 [' Q+ I
8 r( L; l! t; X) `5 S
reset-timer
4 C# u: u4 C3 o+ ^2 r
2 L" z; }. D6 H. O* ]
poll-class

* C7 I4 `9 a, G! Z: u. e2 N* F0 j' B4 u$ W
setup-plots
1 Q) a" z4 u  E! R* i9 X; l6 `

/ o4 b! r9 j  C5 g: X1 Sdo-plots

, Z% N+ c! c  X+ qend. J' U8 B; X: [5 }2 p. c" v+ M

3 o# e( a/ e: m0 N$ P4 L- z) z' a# Z% hto initialize-settings
+ k$ u( l0 Q% w5 `9 c0 t4 D
" q, A" y/ ?. @+ d8 \set global-reputation-list []
( y2 X9 i) Z. ^# `# P5 H* `5 q

. k* k  l% X  a3 pset credibility-list n-values people [0.5]

9 j6 K: `5 a4 V5 A0 N- F( f9 t8 Y, N( ?8 h) z5 m& J6 o( Z& c
set honest-service 0
. E5 C, X, P1 w) f/ F. M
- R# ~0 I( }& w8 j% K8 i9 \% @
set unhonest-service 0

# [3 p0 e* V4 H% n0 E/ i7 q/ J# V( P
set oscillation 0

% V; x; v4 k3 e- x& S0 L1 V( e  v7 Q( L
set rand-dynamic 0
0 G2 Y! C4 e2 ]# z6 N2 a3 N
end# X/ J4 A2 j) W2 J7 p+ p5 f

2 n( J. I- R- ato setup-turtles $ }) @: J* M. E( D; L+ s
set shape "person"
- f" x$ u' |8 b) x0 _  ?setxy random-xcor random-ycor
! K4 b1 t- T7 G2 ~1 Eset trade-record-one []
8 s7 S, H3 I. z* D! I

6 v' m) `( e* b8 z9 T5 A8 Sset trade-record-all n-values people [(list (? + 1) 0 0)]
5 Q/ d5 K- t0 t- ]5 J) U2 s6 X# X

' n( |" _. M0 L  Y4 hset trade-record-current []
. V% Y6 K/ L, P0 K7 y- Jset credibility-receive []
3 A# J3 z* n2 b/ \# G+ F- {% Oset local-reputation 0.56 {/ ?6 l4 @6 l6 b+ _/ `  e
set neighbor-total 02 y" J! S! U9 @, e5 G/ v
set trade-times-total 0
: o/ H, T0 _% @4 U; vset trade-money-total 0
0 Y2 n7 M5 K) a: \! @) Gset customer nobody
* a0 Y3 t/ j+ g6 S5 }' Lset credibility-all n-values people [creat-credibility]  b+ j( b7 i% t
set credibility n-values people [-1]. A1 L! U) ~  @$ j! D! y
get-color0 g4 y3 L" A- ^
- C4 \% ?/ z/ H' x- y- R
end* ~; t7 D% W! T9 g. }) F% n: v5 C' _2 _$ I

$ e% m  O# s% m% Tto-report creat-credibility
  I- ?5 m2 ?9 S9 B& o3 ~report n-values people [0.5]2 b! n- i/ O6 s7 p+ r
end, N$ v* F8 S/ S% D2 O6 T& K2 E
. _2 @5 c7 r  H* ^
to setup-plots) m* ]* Q" g# g7 O  T5 k: D7 x
$ o( C. |# Z4 b2 n
set xmax 30

6 b4 X8 V& d7 @" ?# U) b
; g4 a# H8 `6 r4 {set ymax 1.0
. w3 T$ I, w& ~7 C1 e' h1 C

! ~4 _: C$ h5 H3 X" K$ v2 Q/ lclear-all-plots
) w7 d9 e7 w3 Z1 [6 m

/ a; s' ?$ @/ v* J& |. esetup-plot1

: g# D- W( F1 F$ }
- t7 w  T1 l4 b3 I! Q: asetup-plot2
( Z# n/ |/ U8 Z& |; @: t1 M
! }' e; _6 F# K4 g2 x+ F0 T
setup-plot3

: n4 a( P0 J' oend
! A$ l& S& T7 L* c( u' c4 T& H& w( S5 p
;;run time procedures$ v+ D1 M. G2 k7 L# B. D4 i; l/ s
6 Y" e$ m( X) G! G8 \( Y9 n
to go
; M% Z4 y2 K8 I( a0 M6 }; H& u$ F4 J, {( Z& b& f
ask turtles [do-business]
; k; r1 U) h& {3 _! @0 R4 B
end
' t4 R( ?, J4 s, a" K; U
. D, l0 n* }; Lto do-business
2 Z; G1 v8 a# q. p  A

* P8 B: C: V4 C2 [* h
0 m" B- ~+ X6 s/ e: ?5 g5 Wrt random 360
$ n7 u- K1 A% W! H! [& V9 V

3 D! R+ X& K" f- @  M: K( y' e6 ufd 1

# r# ^& J: H, H8 j; [/ Z0 w1 F1 A2 w. H
ifelse(other turtles-here != nobody)[
$ ^- C% F! w7 S9 R7 [* F+ j

! w3 y% A% n- R) ]3 Y9 S/ K$ lset customer one-of other turtles-here

( i1 Y6 }6 _8 \$ {/ I! B9 e. k; [0 A6 P- E
;; set [customer] of customer myself
3 m1 r2 f* y' i2 g2 ?" B

; I* v! D( S& @9 ~# Q. l% oset [trade-record-one] of self item (([who] of customer) - 1)/ c; t, u- `0 ?' D$ F6 c& l5 x
[trade-record-all]of self
. I( t! P$ a% K) ~. B6 y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, U( I2 q6 X  B  w" M5 N, k' `
' g! ~1 M9 v  c8 [$ `. V3 r
set [trade-record-one] of customer item (([who] of self) - 1)4 s. k8 l* {' r4 c
[trade-record-all]of customer

' P) X1 o( ^8 x5 S  J+ s) R3 [& U: T( U# H! `
set [trade-record-one-len] of self length [trade-record-one] of self
5 c: `2 A& x" i2 g! n2 d  O
+ K# n: H+ q% K$ |% D3 q+ t
set trade-record-current( list (timer) (random money-upper-limit))

+ S( P$ r5 {+ ~0 k" |9 z  W: X
9 R6 U2 M# s( ?/ ~' O  I9 ?. \3 Bask self [do-trust]
6 r5 I$ H, t0 D; k; N! h' W/ Y0 a( ?;;
先求ij的信任度
3 q, V' ?3 j* a% t3 ^4 M
2 V9 i0 {+ P/ Z; N, qif ([trust-ok] of self)# F$ u* w* \! n: J
;;
根据ij的信任度来决定是否与j进行交易[
; i$ X8 s3 c" `- F; ?3 I1 aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* ?8 y0 `# U2 m8 W  m8 I" T$ \
( ?" ?# w3 v/ t. s' L7 \3 m' [
[

; U+ Y8 I) J# O2 i' R: E1 Y: u* F# I- |7 C# p: N
do-trade
& j: ]& K9 Q0 t- f
7 s4 _% c. v" ]5 I0 h9 c, M
update-credibility-ijl
* Z$ l& q3 U0 \1 N

/ G+ Z# \% P$ f7 g. iupdate-credibility-list
4 O/ w9 G3 t7 i) t& o& p3 R7 L
" \1 H( j, [/ V6 J) @" p
: ^- F3 C6 k  H' X3 E
update-global-reputation-list

* b$ y9 i0 n3 E' P; I
* L9 G: ^# e+ _poll-class

1 ?; E2 i" e; z0 n: Z3 K$ P  j6 v9 C$ r. S3 R7 f
get-color
+ n) K  C) d0 f0 E2 R5 w6 X

+ z# m  `- J1 N0 t: w]]2 F2 f. v8 r( i' q. d1 B

* G. E8 O/ y3 Z: f$ `;;
如果所得的信任度满足条件,则进行交易2 u2 S# {/ h+ D2 V6 }& I

6 G: v2 D# O8 n$ @+ c9 u( y# h[

/ b; s6 n/ B) \! P1 ~, E* |$ f2 C
$ Q1 v" Q/ T, L" L9 J2 qrt random 360
% Z; b7 I/ `  i# s9 f: _0 _( e0 F/ X

/ A- D7 q% i% Q$ wfd 1

7 `3 n. W1 o. P8 ^0 R
7 ^+ s) y$ _- P. v]

5 Y8 @( J( ]2 L- \
; b) W* j. j) J' z; g% d4 B. ]+ Bend

  S/ w/ f5 |1 s( w  k; e5 ?
! ^# S8 o/ Y* I0 G6 E/ B7 Uto do-trust
, S1 ~& B* c. Rset trust-ok False' C' X. R% e7 B- q( M, J' n$ r! F' `
1 _5 m" @' Z9 p  @! o' {6 u. J, h( [
3 O" a( N4 c$ [5 [, K
let max-trade-times 0' l6 i" F  f! c: x( b+ l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- T2 v8 }3 `" f- C) D
let max-trade-money 0
+ k2 O- _- {! T9 q6 pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) k6 F6 n( ?* @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" J& |  G3 p& m4 j' H5 Y' Z& [
2 e) c8 e* Q- h* ^

/ c" _/ Z4 S$ ?$ iget-global-proportion
1 F! ~0 m) r* U1 \2 I* F2 {: Q9 Ilet trust-value
& d1 s2 c) e; ~2 }$ ]2 ~9 T- K( b: Z' Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
8 ^1 l; q) \4 H% e5 L; e4 I
if(trust-value > trade-trust-value)1 h4 j- X# ]! _
[set trust-ok true]/ N8 ^( \" a" y% R' ^  Q. {$ A) b; t4 q
end
# a7 |& R# g; ~1 N7 ^, J# |- V& }6 H- A; \  F( y6 q* ]( G5 w. D
to get-global-proportion7 n2 p  L- @  g8 D7 ]
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 o7 ?3 g1 C9 {5 i" C# Q, \% O& Z
[set global-proportion 0]' h1 Z2 _( m3 O) J; W' K
[let i 0
$ S, B% T' j/ i* Z' |( {- ulet sum-money 0) @+ l* r5 t4 ^; w! P9 N: L" O6 a
while[ i < people]
8 H8 r7 J9 w' x) J! J0 v) |[
' v; e( j: h/ `) hif( length (item i7 F" O: h- V4 c+ P" V
[trade-record-all] of customer) > 3 )

4 f; @5 L: C) \. D[
; u. f7 r5 p9 lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  R: o8 k  a$ ?. w]
1 |+ s/ u4 R, F2 F]- z# p* F# o* |: x2 p. U
let j 0
7 |: K# i5 h5 b' P% m: ylet note 0
. N: J+ P- X0 {$ Rwhile[ j < people]
7 K; ^* L# `: R2 C[* ~  J+ f( @  s! ?6 Y
if( length (item i- b3 ^, @- i; d7 W
[trade-record-all] of customer) > 3 )

# m/ {7 T  M! D% U+ N" {" `[, K" ~. {3 q9 Y, \/ C. W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% N  W$ c" r. [; R" z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  M1 R8 m7 A- g) d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 b  i# H* \. T  k9 h' S' F4 B! l# w]
" H* W6 T% q' Y5 n) V; s]
2 m8 u% {1 ~& kset global-proportion note
3 k1 z" N/ H. k& z5 W& D]6 U, l9 i# e9 U7 O
end( J7 b1 Z5 a8 |  D. g8 q4 O0 k
/ X4 |4 Q9 }( @& E6 N
to do-trade
) O( O. o; M6 D6 U" R2 U;;
这个过程实际上是给双方作出评价的过程: M( k* p; X, f* A2 W9 s" B2 o" W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 X/ ^! N8 r  D1 kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" e7 m9 z  L0 ?& q# Jset trade-record-current lput(timer) trade-record-current9 d; n. F. D: n7 B/ t" f
;;
评价时间7 M- M: {' A) I' }9 y) q: L
ask myself [
1 a" \! h& B# g5 G  h; C/ [update-local-reputation. R: s8 L& q9 L4 Z7 K2 D+ r" ]
set trade-record-current lput([local-reputation] of myself) trade-record-current# r+ l0 V' H# x: {0 H
]) ~7 Q2 S& x3 X: D
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 ?/ X0 |2 ~/ J1 Z$ ];;
将此次交易的记录加入到trade-record-one
! S3 x& D/ g/ D4 T4 j" I- tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 o1 A# z: j; m2 x' q* n5 ?
let note (item 2 trade-record-current )# U8 I2 D5 m6 K
set trade-record-current
$ L, p" w9 k3 `9 B3 n(replace-item 2 trade-record-current (item 3 trade-record-current))
* W. i* R# t  {5 |8 p2 J; X- i8 g0 ~/ ?
set trade-record-current- n3 W( a$ a) X; l
(replace-item 3 trade-record-current note)
8 y9 f" h) n7 v; e3 D3 w" u' P+ Y4 g% @
" O6 m) P% |: T7 N) @
ask customer [6 ?, p/ o: o$ K' Y4 y3 O, ^
update-local-reputation
$ A: a9 T8 v5 Y& @# n6 aset trade-record-current0 u8 l! x; n; r+ _( }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; q: G) H8 @8 M) b9 _  z  o]
$ ^7 s( n) n  U* G) T+ @! e! p" m- j& T* z, o, n$ @
1 w; D3 z- f' G
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ V/ y% }; k2 Y

& ?2 a8 L+ F; k. A% bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 l, J( J  I$ ?;;
将此次交易的记录加入到customertrade-record-all6 N, A# j/ c* @- C2 I! b$ @: m3 R
end
! A( w  h" N& o/ w2 h9 a0 Z6 l( _8 R
& u, c* }5 O9 N( ^2 H7 N& gto update-local-reputation4 j# G* p! V, _4 K# f0 Z
set [trade-record-one-len] of myself length [trade-record-one] of myself8 O5 W4 T$ }1 e4 ~; x, g% d

' ~# x; @& I3 k, Q& g7 m, \$ J* b* n6 X  r$ r5 c
;;if [trade-record-one-len] of myself > 3
5 d5 e: A: U& W/ G8 O% j0 X
update-neighbor-total
- d3 j' r. O/ R0 x# t; C;;
更新邻居节点的数目,在此进行
$ Z5 G; Y7 a7 {" }6 Q. ?4 Z6 u- @let i 3
% t/ @& T1 h* {4 T! ~let sum-time 0! N& l. |" M# y8 C8 j7 B0 `! x. _7 B
while[i < [trade-record-one-len] of myself]- v9 \2 Y) ~3 q3 K2 W
[( r. k1 S3 R: b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ |5 K- W: n! a$ P( W7 c
set i
" [) }5 O3 T% N  @' J( i + 1)

$ f& F, T8 ]& p) ~( T( o$ s' G. p]
% ~' S$ u9 C" Q0 a% M4 @let j 3; m+ {, q2 I5 c' a
let sum-money 09 Z3 `( d  p! k& h# {
while[j < [trade-record-one-len] of myself]" ^. f( I! l' `' G9 x
[
% L- m9 \5 |: Q3 }; e. I0 Qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time). T$ S, P4 F- j  K9 S
set j: u2 K0 p% g& F/ T2 e3 z& p
( j + 1)

- x1 i+ @. b3 |& C]& N6 L. S: E, q: M, o2 z
let k 3' _8 @, C' K2 K$ C4 w" B6 W$ b* _
let power 0
$ a$ `+ {7 W: r1 f2 Slet local 0* q9 P9 L: T, c; F' }
while [k <[trade-record-one-len] of myself]
" [+ l. A" c2 f* C% J. ^& ][
+ D4 m8 N6 t" r. i  l. Bset 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) 0 t2 _5 R$ ^$ i
set k (k + 1)
: ~# [3 ~0 w) t0 `$ h]
7 o7 f  R# Y6 R8 Lset [local-reputation] of myself (local)
( `" P( O) W; F: xend
7 K; n4 N: O1 A8 G  m( N7 ^2 x8 D
- x6 I* h5 O- @0 @to update-neighbor-total/ `8 L8 q! ?9 v6 b+ V) _3 j

) i: A% I! q0 R$ `1 D0 B9 Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* g. I) o5 h$ l/ U
. D. P$ h. `/ B+ x; D4 o  p9 N
/ W& r- L% C1 j8 k0 ~  d
end, a8 T* o" T" \* t8 F  o! E

1 v0 I6 G: d' j6 x$ f9 dto update-credibility-ijl
# b; Z/ x* A% f% m
0 u+ A* G5 F* e0 j4 V' N;;
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。
3 ^- N. m8 d0 _let l 07 \8 b4 m) D9 @4 N8 I" T9 R& I$ |
while[ l < people ]9 j* q8 ?5 B1 o& H! J  O
;;
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
( d  A0 }* U: d0 X[
' F- e9 h+ U; W( d% `+ F& hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 d* d1 u2 g8 G" ?% cif (trade-record-one-j-l-len > 3)
3 I+ z9 F/ D, X5 }- Z) h[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# V- _0 {/ W( ^! n& d" G3 W+ R& F* L* _
let i 3/ x2 C1 W7 i5 s% b
let sum-time 0
  X( l7 z+ Z7 H5 L: zwhile[i < trade-record-one-len]
5 p) p2 j! L+ _& L4 `5 n( k7 y[: X0 I, t' O1 F0 k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 ~! A  Q2 V* W: N/ g* K  G" H2 S
set i
" y5 ~& O8 R! V( i + 1)

1 ]4 X- d; [, ~& H. _]8 k' z/ Z& y/ m# m& G. H4 z! Q' @
let credibility-i-j-l 0. Q, p2 [; M, k% t) C
;;i
评价(jjl的评价)6 ~7 `* V4 t: G/ K) C$ [- e; F" y+ z
let j 35 s+ Y* X. k8 P$ n, W7 K
let k 4
; j4 O5 z+ ~0 f" e2 j# V  e+ qwhile[j < trade-record-one-len]
; {* a  y: v* t8 y[: p+ w/ I' f6 f9 W0 t: c; B
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2 e3 ]- R' s+ e5 c/ E! Q3 H& `6 f) j
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)
) J5 U5 p' Z' a  |. j8 ^- V) Rset j
; g# e6 {8 u7 c( j + 1)
' Z2 P  Y8 M; |8 i" L
]! \( }  Z- C" t% Y. N* L7 U1 }
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 ))
" ]( s& W) k, k; J' Y
8 l+ ]" r( Q7 h% d1 {
( u3 Q( G( a' s" H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 J( g" z- G  S# s6 v  d;;
及时更新il的评价质量的评价& z1 f8 L% }+ \0 h3 O8 s8 R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 F2 \5 ?8 f% {7 x+ i
set l (l + 1)
7 }* _0 ~/ P  o) `1 I3 X]& U7 z  x: r6 }9 I3 u
end5 d1 l( G+ X$ H8 C: n! m
0 f7 \, R* h: [
to update-credibility-list! H1 q, ~; @, U! B7 M
let i 0
% c! G/ d; O9 q* Nwhile[i < people]* Q- {/ F8 [1 r2 R" l( @
[" \% K, ^" u- L$ F: a1 C  I
let j 0* G3 v6 Y5 A* e% v' ?8 K
let note 0" \, P8 a4 u5 x6 T
let k 0* n3 w6 {" o+ g/ v
;;
计作出过评价的邻居节点的数目  m% {/ e  s. M9 A( `0 V
while[j < people]
& P' i+ u; X  C[2 e/ l$ z! K; r. s0 q' S( [/ a2 P" l
if (item j( [credibility] of turtle (i + 1)) != -1)
: Y4 K/ l. X3 a/ _;;
判断是否给本turtle的评价质量做出过评价的节点/ s$ h1 J, u& R1 N) ~9 e" s! z
[set note (note + item j ([credibility]of turtle (i + 1)))3 _1 |# p5 |8 B
;;*(exp (-(people - 2)))/(people - 2))]
' F/ `/ c$ ^* w5 I* l
set k (k + 1)
+ T, K; ~1 w' x. |" a0 V: k]2 z  S( V% j$ l( O2 P9 w
set j (j + 1), _  w/ q9 {1 r$ I+ U; \* Y4 c
]
/ s8 X$ {3 k5 V$ [. B2 ~set note (note *(exp (- (1 / k)))/ k)# ?  m# Q% z' e
set credibility-list (replace-item i credibility-list note)4 {/ t3 s# B7 ~3 f2 Q
set i (i + 1)
! o, A/ w2 g1 g: c$ @]" K8 P; B& a- q3 i$ K6 O
end
  W7 E( l' |! f& i. l8 V* T
( V2 g) s9 F# G- ]7 A4 z0 q3 r$ Mto update-global-reputation-list) x# S2 Q& b3 N
let j 0! p3 W. ]5 w  G" c7 h
while[j < people]
0 R6 _. t7 }  E8 J3 f, C2 @2 I) m[
& `9 v( r. g6 G& T7 wlet new 0
; a4 M9 q/ E, Q8 R4 z8 n;;
暂存新的一个全局声誉
& C' v1 `2 Q- o( l# Olet i 0
  Q) b" ~$ R7 plet sum-money 0
% B& q5 _; d/ m4 tlet credibility-money 0+ H. X# w# s; ?! N. U; i9 u
while [i < people], K" x$ {% W8 _7 a; Y9 \5 L
[
( V$ w- K8 f# |set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, i1 |+ ?% z5 ]5 z: j3 sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 c- x/ v" |0 x( q5 nset i (i + 1)* n* h0 R, t. {& ^* a. f, V) e7 @
]9 D9 d6 R, j5 e1 x6 _
let k 0: _3 a9 s, N  H: Q8 A5 y5 R8 W
let new1 02 H6 Z' f2 `" K: d
while [k < people]
. {$ J. j6 c1 N! l* d: R[; v0 ^. r' g* z# T) n  H4 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)9 F" @4 X. @$ W' i* h8 f! `
set k (k + 1)
$ _- @8 p: G' n. W2 a- d]
9 J2 R' |+ |/ e4 V) Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( _* }! H' i# y9 U3 ^' E
set global-reputation-list (replace-item j global-reputation-list new)
0 V" O; w. [% J+ z& a  h7 Z+ u6 tset j (j + 1)/ Y0 {/ T6 \4 F) ^) h1 _8 N7 f
]
1 T# L. z$ x! S$ H. r5 Lend7 D) U/ K( [0 B$ E: A) h

$ A1 Z- n8 W& j. ~' x- v/ x: V$ \# W# }- a5 c( U) A$ F0 ^3 b0 g4 E
" Q, [8 y4 d: k: v% [% b# D
to get-color) [& p/ s, c5 H/ \  _" M. b. T
" o, v+ _4 ]$ [6 A% Q
set color blue

1 `$ U' o) |4 W/ m; {) E5 Eend
9 T0 _; R0 n4 E6 i2 c4 [( K3 W% b0 H/ T: _1 z$ }* L2 i( K
to poll-class& j# I9 W1 H  b* \) t+ @1 H
end: i# y% H1 U8 B2 h  s

+ k% L6 Z& K+ b) D. l) }) oto setup-plot1
9 o( M6 D( W1 c
2 b# d- l; S7 M5 R* Pset-current-plot "Trends-of-Local-reputation"

0 @( J3 ]; o1 I  D, O  `
0 b1 j& v. D2 p" Pset-plot-x-range 0 xmax
2 a$ C& j# V3 N5 E- q2 j" }
; u5 E+ i7 }' w7 m
set-plot-y-range 0.0 ymax
9 i9 W9 ^! |/ P8 S4 `
end
/ K2 }. i8 e# r* O
4 ~" s& J9 |; u: yto setup-plot2
/ x# d6 j7 T8 K. `3 b# v, b8 H) j* s& y1 U# M2 I
set-current-plot "Trends-of-global-reputation"

, ]5 B% E% H% S4 V3 M
9 s3 K2 j2 i" b7 mset-plot-x-range 0 xmax
# @, D0 i# Q/ s0 y9 l+ \/ w+ s! t) H

3 m& z/ x1 o9 |+ \1 c; k! Eset-plot-y-range 0.0 ymax

" a8 x9 }& T* }( gend
9 r* L0 t; e9 ~$ V1 o8 j$ O
: z4 W$ @1 h9 k" w  ^to setup-plot3' T0 z( }2 _4 {3 }

: [$ ?5 L8 T9 q' F5 }set-current-plot "Trends-of-credibility"
+ \, S& X$ |3 u' U
8 ?$ ~# F( d9 ~3 R/ U4 k/ R
set-plot-x-range 0 xmax

7 c; t3 ^# v9 `% K4 i4 V  h6 f6 C( A
set-plot-y-range 0.0 ymax

# S5 x8 U- `0 E7 C, tend6 T* [! M! s1 L$ l( G
" E% w; [/ K- O1 s& t& p
to do-plots
6 F$ t* v. J' }4 N' _set-current-plot "Trends-of-Local-reputation"
8 W. V3 @5 t/ V& @- t8 {9 [set-current-plot-pen "Honest service"
) c+ l# x' I3 yend
8 P: @6 v  ?$ s
& Z( b+ c. q: K[ 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 x9 ~* u& @  A9 `: }+ O# @* t, m
7 C  ?2 f8 D7 M
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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